diff options
| author | Linus Torvalds | 2014-06-08 20:31:16 +0200 |
|---|---|---|
| committer | Linus Torvalds | 2014-06-08 20:31:16 +0200 |
| commit | 3f17ea6dea8ba5668873afa54628a91aaa3fb1c0 (patch) | |
| tree | afbeb2accd4c2199ddd705ae943995b143a0af02 /fs | |
| parent | Linux 3.15 (diff) | |
| parent | Merge tag 'clk-for-linus-3.16' of git://git.linaro.org/people/mike.turquette/... (diff) | |
| download | kernel-qcow2-linux-3f17ea6dea8ba5668873afa54628a91aaa3fb1c0.tar.gz kernel-qcow2-linux-3f17ea6dea8ba5668873afa54628a91aaa3fb1c0.tar.xz kernel-qcow2-linux-3f17ea6dea8ba5668873afa54628a91aaa3fb1c0.zip | |
Merge branch 'next' (accumulated 3.16 merge window patches) into master
Now that 3.15 is released, this merges the 'next' branch into 'master',
bringing us to the normal situation where my 'master' branch is the
merge window.
* accumulated work in next: (6809 commits)
ufs: sb mutex merge + mutex_destroy
powerpc: update comments for generic idle conversion
cris: update comments for generic idle conversion
idle: remove cpu_idle() forward declarations
nbd: zero from and len fields in NBD_CMD_DISCONNECT.
mm: convert some level-less printks to pr_*
MAINTAINERS: adi-buildroot-devel is moderated
MAINTAINERS: add linux-api for review of API/ABI changes
mm/kmemleak-test.c: use pr_fmt for logging
fs/dlm/debug_fs.c: replace seq_printf by seq_puts
fs/dlm/lockspace.c: convert simple_str to kstr
fs/dlm/config.c: convert simple_str to kstr
mm: mark remap_file_pages() syscall as deprecated
mm: memcontrol: remove unnecessary memcg argument from soft limit functions
mm: memcontrol: clean up memcg zoneinfo lookup
mm/memblock.c: call kmemleak directly from memblock_(alloc|free)
mm/mempool.c: update the kmemleak stack trace for mempool allocations
lib/radix-tree.c: update the kmemleak stack trace for radix tree allocations
mm: introduce kmemleak_update_trace()
mm/kmemleak.c: use %u to print ->checksum
...
Diffstat (limited to 'fs')
213 files changed, 2190 insertions, 4503 deletions
diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c index 14da82564f4e..6894b085f0ee 100644 --- a/fs/9p/v9fs.c +++ b/fs/9p/v9fs.c @@ -537,7 +537,7 @@ static struct attribute_group v9fs_attr_group = { * */ -static int v9fs_sysfs_init(void) +static int __init v9fs_sysfs_init(void) { v9fs_kobj = kobject_create_and_add("9p", fs_kobj); if (!v9fs_kobj) diff --git a/fs/9p/vfs_dir.c b/fs/9p/vfs_dir.c index 4d0c2e0be7e5..0b3bfa303dda 100644 --- a/fs/9p/vfs_dir.c +++ b/fs/9p/vfs_dir.c @@ -42,7 +42,6 @@ /** * struct p9_rdir - readdir accounting - * @mutex: mutex protecting readdir * @head: start offset of current dirread buffer * @tail: end offset of current dirread buffer * @buf: dirread buffer diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c index d8223209d4b1..96e550760699 100644 --- a/fs/9p/vfs_file.c +++ b/fs/9p/vfs_file.c @@ -352,9 +352,6 @@ static int v9fs_file_flock_dotl(struct file *filp, int cmd, invalidate_mapping_pages(&inode->i_data, 0, -1); } /* Convert flock to posix lock */ - fl->fl_owner = (fl_owner_t)filp; - fl->fl_start = 0; - fl->fl_end = OFFSET_MAX; fl->fl_flags |= FL_POSIX; fl->fl_flags ^= FL_FLOCK; @@ -684,7 +681,7 @@ v9fs_direct_read(struct file *filp, char __user *udata, size_t count, /** * v9fs_cached_file_read - read from a file * @filp: file pointer to read - * @udata: user data buffer to read data into + * @data: user data buffer to read data into * @count: size of buffer * @offset: offset at which to read data * @@ -701,7 +698,7 @@ v9fs_cached_file_read(struct file *filp, char __user *data, size_t count, /** * v9fs_mmap_file_read - read from a file * @filp: file pointer to read - * @udata: user data buffer to read data into + * @data: user data buffer to read data into * @count: size of buffer * @offset: offset at which to read data * diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c index 53161ec058a7..00d140fb2263 100644 --- a/fs/9p/vfs_inode.c +++ b/fs/9p/vfs_inode.c @@ -580,7 +580,7 @@ static int v9fs_at_to_dotl_flags(int flags) * v9fs_remove - helper function to remove files and directories * @dir: directory inode that is being deleted * @dentry: dentry that is being deleted - * @rmdir: removing a directory + * @flags: removing a directory * */ @@ -778,7 +778,7 @@ static int v9fs_vfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode * v9fs_vfs_lookup - VFS lookup hook to "walk" to a new inode * @dir: inode that is being walked from * @dentry: dentry that is being walked to? - * @nameidata: path data + * @flags: lookup flags (unused) * */ @@ -1324,7 +1324,7 @@ v9fs_vfs_put_link(struct dentry *dentry, struct nameidata *nd, void *p) * v9fs_vfs_mkspecial - create a special file * @dir: inode to create special file in * @dentry: dentry to create - * @mode: mode to create special file + * @perm: mode to create special file * @extension: 9p2000.u format extension string representing special file * */ diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c index 59dc8e87647f..1fa85aae24df 100644 --- a/fs/9p/vfs_inode_dotl.c +++ b/fs/9p/vfs_inode_dotl.c @@ -226,7 +226,7 @@ int v9fs_open_to_dotl_flags(int flags) * v9fs_vfs_create_dotl - VFS hook to create files for 9P2000.L protocol. * @dir: directory inode that is being created * @dentry: dentry that is being deleted - * @mode: create permissions + * @omode: create permissions * */ @@ -375,7 +375,7 @@ err_clunk_old_fid: * v9fs_vfs_mkdir_dotl - VFS mkdir hook to create a directory * @dir: inode that is being unlinked * @dentry: dentry that is being unlinked - * @mode: mode for new directory + * @omode: mode for new directory * */ @@ -607,7 +607,6 @@ int v9fs_vfs_setattr_dotl(struct dentry *dentry, struct iattr *iattr) * v9fs_stat2inode_dotl - populate an inode structure with stat info * @stat: stat structure * @inode: inode to populate - * @sb: superblock of filesystem * */ @@ -808,7 +807,7 @@ v9fs_vfs_link_dotl(struct dentry *old_dentry, struct inode *dir, * v9fs_vfs_mknod_dotl - create a special file * @dir: inode destination for new link * @dentry: dentry for file - * @mode: mode for creation + * @omode: mode for creation * @rdev: device associated with special file * */ diff --git a/fs/Makefile b/fs/Makefile index f9cb9876e466..4030cbfbc9af 100644 --- a/fs/Makefile +++ b/fs/Makefile @@ -14,14 +14,13 @@ obj-y := open.o read_write.o file_table.o super.o \ stack.o fs_struct.o statfs.o ifeq ($(CONFIG_BLOCK),y) -obj-y += buffer.o bio.o block_dev.o direct-io.o mpage.o ioprio.o +obj-y += buffer.o block_dev.o direct-io.o mpage.o else obj-y += no-block.o endif obj-$(CONFIG_PROC_FS) += proc_namespace.o -obj-$(CONFIG_BLK_DEV_INTEGRITY) += bio-integrity.o obj-y += notify/ obj-$(CONFIG_EPOLL) += eventpoll.o obj-$(CONFIG_ANON_INODES) += anon_inodes.o diff --git a/fs/affs/affs.h b/fs/affs/affs.h index 25b23b1e7f22..9bca88159725 100644 --- a/fs/affs/affs.h +++ b/fs/affs/affs.h @@ -1,3 +1,9 @@ +#ifdef pr_fmt +#undef pr_fmt +#endif + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/types.h> #include <linux/fs.h> #include <linux/buffer_head.h> @@ -206,7 +212,7 @@ affs_set_blocksize(struct super_block *sb, int size) static inline struct buffer_head * affs_bread(struct super_block *sb, int block) { - pr_debug("affs_bread: %d\n", block); + pr_debug("%s: %d\n", __func__, block); if (block >= AFFS_SB(sb)->s_reserved && block < AFFS_SB(sb)->s_partition_size) return sb_bread(sb, block); return NULL; @@ -214,7 +220,7 @@ affs_bread(struct super_block *sb, int block) static inline struct buffer_head * affs_getblk(struct super_block *sb, int block) { - pr_debug("affs_getblk: %d\n", block); + pr_debug("%s: %d\n", __func__, block); if (block >= AFFS_SB(sb)->s_reserved && block < AFFS_SB(sb)->s_partition_size) return sb_getblk(sb, block); return NULL; @@ -223,7 +229,7 @@ static inline struct buffer_head * affs_getzeroblk(struct super_block *sb, int block) { struct buffer_head *bh; - pr_debug("affs_getzeroblk: %d\n", block); + pr_debug("%s: %d\n", __func__, block); if (block >= AFFS_SB(sb)->s_reserved && block < AFFS_SB(sb)->s_partition_size) { bh = sb_getblk(sb, block); lock_buffer(bh); @@ -238,7 +244,7 @@ static inline struct buffer_head * affs_getemptyblk(struct super_block *sb, int block) { struct buffer_head *bh; - pr_debug("affs_getemptyblk: %d\n", block); + pr_debug("%s: %d\n", __func__, block); if (block >= AFFS_SB(sb)->s_reserved && block < AFFS_SB(sb)->s_partition_size) { bh = sb_getblk(sb, block); wait_on_buffer(bh); @@ -251,7 +257,7 @@ static inline void affs_brelse(struct buffer_head *bh) { if (bh) - pr_debug("affs_brelse: %lld\n", (long long) bh->b_blocknr); + pr_debug("%s: %lld\n", __func__, (long long) bh->b_blocknr); brelse(bh); } diff --git a/fs/affs/amigaffs.c b/fs/affs/amigaffs.c index 533a322c41c0..406b29836b19 100644 --- a/fs/affs/amigaffs.c +++ b/fs/affs/amigaffs.c @@ -34,7 +34,7 @@ affs_insert_hash(struct inode *dir, struct buffer_head *bh) ino = bh->b_blocknr; offset = affs_hash_name(sb, AFFS_TAIL(sb, bh)->name + 1, AFFS_TAIL(sb, bh)->name[0]); - pr_debug("AFFS: insert_hash(dir=%u, ino=%d)\n", (u32)dir->i_ino, ino); + pr_debug("%s(dir=%u, ino=%d)\n", __func__, (u32)dir->i_ino, ino); dir_bh = affs_bread(sb, dir->i_ino); if (!dir_bh) @@ -84,7 +84,8 @@ affs_remove_hash(struct inode *dir, struct buffer_head *rem_bh) sb = dir->i_sb; rem_ino = rem_bh->b_blocknr; offset = affs_hash_name(sb, AFFS_TAIL(sb, rem_bh)->name+1, AFFS_TAIL(sb, rem_bh)->name[0]); - pr_debug("AFFS: remove_hash(dir=%d, ino=%d, hashval=%d)\n", (u32)dir->i_ino, rem_ino, offset); + pr_debug("%s(dir=%d, ino=%d, hashval=%d)\n", + __func__, (u32)dir->i_ino, rem_ino, offset); bh = affs_bread(sb, dir->i_ino); if (!bh) @@ -147,7 +148,7 @@ affs_remove_link(struct dentry *dentry) u32 link_ino, ino; int retval; - pr_debug("AFFS: remove_link(key=%ld)\n", inode->i_ino); + pr_debug("%s(key=%ld)\n", __func__, inode->i_ino); retval = -EIO; bh = affs_bread(sb, inode->i_ino); if (!bh) @@ -279,7 +280,7 @@ affs_remove_header(struct dentry *dentry) if (!inode) goto done; - pr_debug("AFFS: remove_header(key=%ld)\n", inode->i_ino); + pr_debug("%s(key=%ld)\n", __func__, inode->i_ino); retval = -EIO; bh = affs_bread(sb, (u32)(long)dentry->d_fsdata); if (!bh) @@ -451,10 +452,10 @@ affs_error(struct super_block *sb, const char *function, const char *fmt, ...) vsnprintf(ErrorBuffer,sizeof(ErrorBuffer),fmt,args); va_end(args); - printk(KERN_CRIT "AFFS error (device %s): %s(): %s\n", sb->s_id, + pr_crit("error (device %s): %s(): %s\n", sb->s_id, function,ErrorBuffer); if (!(sb->s_flags & MS_RDONLY)) - printk(KERN_WARNING "AFFS: Remounting filesystem read-only\n"); + pr_warn("Remounting filesystem read-only\n"); sb->s_flags |= MS_RDONLY; } @@ -467,7 +468,7 @@ affs_warning(struct super_block *sb, const char *function, const char *fmt, ...) vsnprintf(ErrorBuffer,sizeof(ErrorBuffer),fmt,args); va_end(args); - printk(KERN_WARNING "AFFS warning (device %s): %s(): %s\n", sb->s_id, + pr_warn("(device %s): %s(): %s\n", sb->s_id, function,ErrorBuffer); } diff --git a/fs/affs/bitmap.c b/fs/affs/bitmap.c index a32246b8359e..c8de51185c23 100644 --- a/fs/affs/bitmap.c +++ b/fs/affs/bitmap.c @@ -17,7 +17,7 @@ affs_count_free_blocks(struct super_block *sb) u32 free; int i; - pr_debug("AFFS: count_free_blocks()\n"); + pr_debug("%s()\n", __func__); if (sb->s_flags & MS_RDONLY) return 0; @@ -43,7 +43,7 @@ affs_free_block(struct super_block *sb, u32 block) u32 blk, bmap, bit, mask, tmp; __be32 *data; - pr_debug("AFFS: free_block(%u)\n", block); + pr_debug("%s(%u)\n", __func__, block); if (block > sbi->s_partition_size) goto err_range; @@ -125,7 +125,7 @@ affs_alloc_block(struct inode *inode, u32 goal) sb = inode->i_sb; sbi = AFFS_SB(sb); - pr_debug("AFFS: balloc(inode=%lu,goal=%u): ", inode->i_ino, goal); + pr_debug("balloc(inode=%lu,goal=%u): ", inode->i_ino, goal); if (AFFS_I(inode)->i_pa_cnt) { pr_debug("%d\n", AFFS_I(inode)->i_lastalloc+1); @@ -254,8 +254,7 @@ int affs_init_bitmap(struct super_block *sb, int *flags) return 0; if (!AFFS_ROOT_TAIL(sb, sbi->s_root_bh)->bm_flag) { - printk(KERN_NOTICE "AFFS: Bitmap invalid - mounting %s read only\n", - sb->s_id); + pr_notice("Bitmap invalid - mounting %s read only\n", sb->s_id); *flags |= MS_RDONLY; return 0; } @@ -268,7 +267,7 @@ int affs_init_bitmap(struct super_block *sb, int *flags) size = sbi->s_bmap_count * sizeof(*bm); bm = sbi->s_bitmap = kzalloc(size, GFP_KERNEL); if (!sbi->s_bitmap) { - printk(KERN_ERR "AFFS: Bitmap allocation failed\n"); + pr_err("Bitmap allocation failed\n"); return -ENOMEM; } @@ -282,17 +281,17 @@ int affs_init_bitmap(struct super_block *sb, int *flags) bm->bm_key = be32_to_cpu(bmap_blk[blk]); bh = affs_bread(sb, bm->bm_key); if (!bh) { - printk(KERN_ERR "AFFS: Cannot read bitmap\n"); + pr_err("Cannot read bitmap\n"); res = -EIO; goto out; } if (affs_checksum_block(sb, bh)) { - printk(KERN_WARNING "AFFS: Bitmap %u invalid - mounting %s read only.\n", - bm->bm_key, sb->s_id); + pr_warn("Bitmap %u invalid - mounting %s read only.\n", + bm->bm_key, sb->s_id); *flags |= MS_RDONLY; goto out; } - pr_debug("AFFS: read bitmap block %d: %d\n", blk, bm->bm_key); + pr_debug("read bitmap block %d: %d\n", blk, bm->bm_key); bm->bm_free = memweight(bh->b_data + 4, sb->s_blocksize - 4); /* Don't try read the extension if this is the last block, @@ -304,7 +303,7 @@ int affs_init_bitmap(struct super_block *sb, int *flags) affs_brelse(bmap_bh); bmap_bh = affs_bread(sb, be32_to_cpu(bmap_blk[blk])); if (!bmap_bh) { - printk(KERN_ERR "AFFS: Cannot read bitmap extension\n"); + pr_err("Cannot read bitmap extension\n"); res = -EIO; goto out; } diff --git a/fs/affs/dir.c b/fs/affs/dir.c index cbbda476a805..59f07bec92a6 100644 --- a/fs/affs/dir.c +++ b/fs/affs/dir.c @@ -54,8 +54,8 @@ affs_readdir(struct file *file, struct dir_context *ctx) u32 ino; int error = 0; - pr_debug("AFFS: readdir(ino=%lu,f_pos=%lx)\n", - inode->i_ino, (unsigned long)ctx->pos); + pr_debug("%s(ino=%lu,f_pos=%lx)\n", + __func__, inode->i_ino, (unsigned long)ctx->pos); if (ctx->pos < 2) { file->private_data = (void *)0; @@ -81,7 +81,7 @@ affs_readdir(struct file *file, struct dir_context *ctx) */ ino = (u32)(long)file->private_data; if (ino && file->f_version == inode->i_version) { - pr_debug("AFFS: readdir() left off=%d\n", ino); + pr_debug("readdir() left off=%d\n", ino); goto inside; } @@ -117,7 +117,7 @@ inside: namelen = min(AFFS_TAIL(sb, fh_bh)->name[0], (u8)30); name = AFFS_TAIL(sb, fh_bh)->name + 1; - pr_debug("AFFS: readdir(): dir_emit(\"%.*s\", " + pr_debug("readdir(): dir_emit(\"%.*s\", " "ino=%u), hash=%d, f_pos=%x\n", namelen, name, ino, hash_pos, (u32)ctx->pos); diff --git a/fs/affs/file.c b/fs/affs/file.c index 8669b6ecddee..0270303388ee 100644 --- a/fs/affs/file.c +++ b/fs/affs/file.c @@ -45,7 +45,7 @@ const struct inode_operations affs_file_inode_operations = { static int affs_file_open(struct inode *inode, struct file *filp) { - pr_debug("AFFS: open(%lu,%d)\n", + pr_debug("open(%lu,%d)\n", inode->i_ino, atomic_read(&AFFS_I(inode)->i_opencnt)); atomic_inc(&AFFS_I(inode)->i_opencnt); return 0; @@ -54,7 +54,7 @@ affs_file_open(struct inode *inode, struct file *filp) static int affs_file_release(struct inode *inode, struct file *filp) { - pr_debug("AFFS: release(%lu, %d)\n", + pr_debug("release(%lu, %d)\n", inode->i_ino, atomic_read(&AFFS_I(inode)->i_opencnt)); if (atomic_dec_and_test(&AFFS_I(inode)->i_opencnt)) { @@ -324,7 +324,8 @@ affs_get_block(struct inode *inode, sector_t block, struct buffer_head *bh_resul struct buffer_head *ext_bh; u32 ext; - pr_debug("AFFS: get_block(%u, %lu)\n", (u32)inode->i_ino, (unsigned long)block); + pr_debug("%s(%u, %lu)\n", + __func__, (u32)inode->i_ino, (unsigned long)block); BUG_ON(block > (sector_t)0x7fffffffUL); @@ -498,34 +499,36 @@ affs_getemptyblk_ino(struct inode *inode, int block) } static int -affs_do_readpage_ofs(struct file *file, struct page *page, unsigned from, unsigned to) +affs_do_readpage_ofs(struct page *page, unsigned to) { struct inode *inode = page->mapping->host; struct super_block *sb = inode->i_sb; struct buffer_head *bh; char *data; + unsigned pos = 0; u32 bidx, boff, bsize; u32 tmp; - pr_debug("AFFS: read_page(%u, %ld, %d, %d)\n", (u32)inode->i_ino, page->index, from, to); - BUG_ON(from > to || to > PAGE_CACHE_SIZE); + pr_debug("%s(%u, %ld, 0, %d)\n", __func__, (u32)inode->i_ino, + page->index, to); + BUG_ON(to > PAGE_CACHE_SIZE); kmap(page); data = page_address(page); bsize = AFFS_SB(sb)->s_data_blksize; - tmp = (page->index << PAGE_CACHE_SHIFT) + from; + tmp = page->index << PAGE_CACHE_SHIFT; bidx = tmp / bsize; boff = tmp % bsize; - while (from < to) { + while (pos < to) { bh = affs_bread_ino(inode, bidx, 0); if (IS_ERR(bh)) return PTR_ERR(bh); - tmp = min(bsize - boff, to - from); - BUG_ON(from + tmp > to || tmp > bsize); - memcpy(data + from, AFFS_DATA(bh) + boff, tmp); + tmp = min(bsize - boff, to - pos); + BUG_ON(pos + tmp > to || tmp > bsize); + memcpy(data + pos, AFFS_DATA(bh) + boff, tmp); affs_brelse(bh); bidx++; - from += tmp; + pos += tmp; boff = 0; } flush_dcache_page(page); @@ -542,7 +545,7 @@ affs_extent_file_ofs(struct inode *inode, u32 newsize) u32 size, bsize; u32 tmp; - pr_debug("AFFS: extent_file(%u, %d)\n", (u32)inode->i_ino, newsize); + pr_debug("%s(%u, %d)\n", __func__, (u32)inode->i_ino, newsize); bsize = AFFS_SB(sb)->s_data_blksize; bh = NULL; size = AFFS_I(inode)->mmu_private; @@ -608,14 +611,14 @@ affs_readpage_ofs(struct file *file, struct page *page) u32 to; int err; - pr_debug("AFFS: read_page(%u, %ld)\n", (u32)inode->i_ino, page->index); + pr_debug("%s(%u, %ld)\n", __func__, (u32)inode->i_ino, page->index); to = PAGE_CACHE_SIZE; if (((page->index + 1) << PAGE_CACHE_SHIFT) > inode->i_size) { to = inode->i_size & ~PAGE_CACHE_MASK; memset(page_address(page) + to, 0, PAGE_CACHE_SIZE - to); } - err = affs_do_readpage_ofs(file, page, 0, to); + err = affs_do_readpage_ofs(page, to); if (!err) SetPageUptodate(page); unlock_page(page); @@ -631,7 +634,8 @@ static int affs_write_begin_ofs(struct file *file, struct address_space *mapping pgoff_t index; int err = 0; - pr_debug("AFFS: write_begin(%u, %llu, %llu)\n", (u32)inode->i_ino, (unsigned long long)pos, (unsigned long long)pos + len); + pr_debug("%s(%u, %llu, %llu)\n", __func__, (u32)inode->i_ino, + (unsigned long long)pos, (unsigned long long)pos + len); if (pos > AFFS_I(inode)->mmu_private) { /* XXX: this probably leaves a too-big i_size in case of * failure. Should really be updating i_size at write_end time @@ -651,7 +655,7 @@ static int affs_write_begin_ofs(struct file *file, struct address_space *mapping return 0; /* XXX: inefficient but safe in the face of short writes */ - err = affs_do_readpage_ofs(file, page, 0, PAGE_CACHE_SIZE); + err = affs_do_readpage_ofs(page, PAGE_CACHE_SIZE); if (err) { unlock_page(page); page_cache_release(page); @@ -680,7 +684,9 @@ static int affs_write_end_ofs(struct file *file, struct address_space *mapping, * due to write_begin. */ - pr_debug("AFFS: write_begin(%u, %llu, %llu)\n", (u32)inode->i_ino, (unsigned long long)pos, (unsigned long long)pos + len); + pr_debug("%s(%u, %llu, %llu)\n", + __func__, (u32)inode->i_ino, (unsigned long long)pos, + (unsigned long long)pos + len); bsize = AFFS_SB(sb)->s_data_blksize; data = page_address(page); @@ -802,7 +808,7 @@ affs_free_prealloc(struct inode *inode) { struct super_block *sb = inode->i_sb; - pr_debug("AFFS: free_prealloc(ino=%lu)\n", inode->i_ino); + pr_debug("free_prealloc(ino=%lu)\n", inode->i_ino); while (AFFS_I(inode)->i_pa_cnt) { AFFS_I(inode)->i_pa_cnt--; @@ -822,7 +828,7 @@ affs_truncate(struct inode *inode) struct buffer_head *ext_bh; int i; - pr_debug("AFFS: truncate(inode=%d, oldsize=%u, newsize=%u)\n", + pr_debug("truncate(inode=%d, oldsize=%u, newsize=%u)\n", (u32)inode->i_ino, (u32)AFFS_I(inode)->mmu_private, (u32)inode->i_size); last_blk = 0; diff --git a/fs/affs/inode.c b/fs/affs/inode.c index 96df91e8c334..bec2d1a0c91c 100644 --- a/fs/affs/inode.c +++ b/fs/affs/inode.c @@ -34,7 +34,7 @@ struct inode *affs_iget(struct super_block *sb, unsigned long ino) if (!(inode->i_state & I_NEW)) return inode; - pr_debug("AFFS: affs_iget(%lu)\n", inode->i_ino); + pr_debug("affs_iget(%lu)\n", inode->i_ino); block = inode->i_ino; bh = affs_bread(sb, block); @@ -175,7 +175,7 @@ affs_write_inode(struct inode *inode, struct writeback_control *wbc) uid_t uid; gid_t gid; - pr_debug("AFFS: write_inode(%lu)\n",inode->i_ino); + pr_debug("write_inode(%lu)\n", inode->i_ino); if (!inode->i_nlink) // possibly free block @@ -220,7 +220,7 @@ affs_notify_change(struct dentry *dentry, struct iattr *attr) struct inode *inode = dentry->d_inode; int error; - pr_debug("AFFS: notify_change(%lu,0x%x)\n",inode->i_ino,attr->ia_valid); + pr_debug("notify_change(%lu,0x%x)\n", inode->i_ino, attr->ia_valid); error = inode_change_ok(inode,attr); if (error) @@ -258,7 +258,8 @@ void affs_evict_inode(struct inode *inode) { unsigned long cache_page; - pr_debug("AFFS: evict_inode(ino=%lu, nlink=%u)\n", inode->i_ino, inode->i_nlink); + pr_debug("evict_inode(ino=%lu, nlink=%u)\n", + inode->i_ino, inode->i_nlink); truncate_inode_pages_final(&inode->i_data); if (!inode->i_nlink) { @@ -271,7 +272,7 @@ affs_evict_inode(struct inode *inode) affs_free_prealloc(inode); cache_page = (unsigned long)AFFS_I(inode)->i_lc; if (cache_page) { - pr_debug("AFFS: freeing ext cache\n"); + pr_debug("freeing ext cache\n"); AFFS_I(inode)->i_lc = NULL; AFFS_I(inode)->i_ac = NULL; free_page(cache_page); @@ -350,7 +351,8 @@ affs_add_entry(struct inode *dir, struct inode *inode, struct dentry *dentry, s3 u32 block = 0; int retval; - pr_debug("AFFS: add_entry(dir=%u, inode=%u, \"%*s\", type=%d)\n", (u32)dir->i_ino, + pr_debug("%s(dir=%u, inode=%u, \"%*s\", type=%d)\n", + __func__, (u32)dir->i_ino, (u32)inode->i_ino, (int)dentry->d_name.len, dentry->d_name.name, type); retval = -EIO; diff --git a/fs/affs/namei.c b/fs/affs/namei.c index 6dae1ccd176d..035bd31556fc 100644 --- a/fs/affs/namei.c +++ b/fs/affs/namei.c @@ -190,7 +190,8 @@ affs_find_entry(struct inode *dir, struct dentry *dentry) toupper_t toupper = affs_get_toupper(sb); u32 key; - pr_debug("AFFS: find_entry(\"%.*s\")\n", (int)dentry->d_name.len, dentry->d_name.name); + pr_debug("%s(\"%.*s\")\n", + __func__, (int)dentry->d_name.len, dentry->d_name.name); bh = affs_bread(sb, dir->i_ino); if (!bh) @@ -218,7 +219,8 @@ affs_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags) struct buffer_head *bh; struct inode *inode = NULL; - pr_debug("AFFS: lookup(\"%.*s\")\n",(int)dentry->d_name.len,dentry->d_name.name); + pr_debug("%s(\"%.*s\")\n", + __func__, (int)dentry->d_name.len, dentry->d_name.name); affs_lock_dir(dir); bh = affs_find_entry(dir, dentry); @@ -248,9 +250,9 @@ affs_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags) int affs_unlink(struct inode *dir, struct dentry *dentry) { - pr_debug("AFFS: unlink(dir=%d, %lu \"%.*s\")\n", (u32)dir->i_ino, - dentry->d_inode->i_ino, - (int)dentry->d_name.len, dentry->d_name.name); + pr_debug("%s(dir=%d, %lu \"%.*s\")\n", + __func__, (u32)dir->i_ino, dentry->d_inode->i_ino, + (int)dentry->d_name.len, dentry->d_name.name); return affs_remove_header(dentry); } @@ -262,7 +264,8 @@ affs_create(struct inode *dir, struct dentry *dentry, umode_t mode, bool excl) struct inode *inode; int error; - pr_debug("AFFS: create(%lu,\"%.*s\",0%ho)\n",dir->i_ino,(int)dentry->d_name.len, + pr_debug("%s(%lu,\"%.*s\",0%ho)\n", + __func__, dir->i_ino, (int)dentry->d_name.len, dentry->d_name.name,mode); inode = affs_new_inode(dir); @@ -291,8 +294,9 @@ affs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) struct inode *inode; int error; - pr_debug("AFFS: mkdir(%lu,\"%.*s\",0%ho)\n",dir->i_ino, - (int)dentry->d_name.len,dentry->d_name.name,mode); + pr_debug("%s(%lu,\"%.*s\",0%ho)\n", + __func__, dir->i_ino, (int)dentry->d_name.len, + dentry->d_name.name, mode); inode = affs_new_inode(dir); if (!inode) @@ -317,8 +321,8 @@ affs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) int affs_rmdir(struct inode *dir, struct dentry *dentry) { - pr_debug("AFFS: rmdir(dir=%u, %lu \"%.*s\")\n", (u32)dir->i_ino, - dentry->d_inode->i_ino, + pr_debug("%s(dir=%u, %lu \"%.*s\")\n", + __func__, (u32)dir->i_ino, dentry->d_inode->i_ino, (int)dentry->d_name.len, dentry->d_name.name); return affs_remove_header(dentry); @@ -334,8 +338,9 @@ affs_symlink(struct inode *dir, struct dentry *dentry, const char *symname) int i, maxlen, error; char c, lc; - pr_debug("AFFS: symlink(%lu,\"%.*s\" -> \"%s\")\n",dir->i_ino, - (int)dentry->d_name.len,dentry->d_name.name,symname); + pr_debug("%s(%lu,\"%.*s\" -> \"%s\")\n", + __func__, dir->i_ino, (int)dentry->d_name.len, + dentry->d_name.name, symname); maxlen = AFFS_SB(sb)->s_hashsize * sizeof(u32) - 1; inode = affs_new_inode(dir); @@ -404,7 +409,8 @@ affs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry) { struct inode *inode = old_dentry->d_inode; - pr_debug("AFFS: link(%u, %u, \"%.*s\")\n", (u32)inode->i_ino, (u32)dir->i_ino, + pr_debug("%s(%u, %u, \"%.*s\")\n", + __func__, (u32)inode->i_ino, (u32)dir->i_ino, (int)dentry->d_name.len,dentry->d_name.name); return affs_add_entry(dir, inode, dentry, ST_LINKFILE); @@ -418,9 +424,10 @@ affs_rename(struct inode *old_dir, struct dentry *old_dentry, struct buffer_head *bh = NULL; int retval; - pr_debug("AFFS: rename(old=%u,\"%*s\" to new=%u,\"%*s\")\n", - (u32)old_dir->i_ino, (int)old_dentry->d_name.len, old_dentry->d_name.name, - (u32)new_dir->i_ino, (int)new_dentry->d_name.len, new_dentry->d_name.name); + pr_debug("%s(old=%u,\"%*s\" to new=%u,\"%*s\")\n", + __func__, (u32)old_dir->i_ino, (int)old_dentry->d_name.len, + old_dentry->d_name.name, (u32)new_dir->i_ino, + (int)new_dentry->d_name.len, new_dentry->d_name.name); retval = affs_check_name(new_dentry->d_name.name, new_dentry->d_name.len, diff --git a/fs/affs/super.c b/fs/affs/super.c index 895ac7dc9dbf..51f1a95bff73 100644 --- a/fs/affs/super.c +++ b/fs/affs/super.c @@ -46,7 +46,7 @@ static void affs_put_super(struct super_block *sb) { struct affs_sb_info *sbi = AFFS_SB(sb); - pr_debug("AFFS: put_super()\n"); + pr_debug("%s()\n", __func__); cancel_delayed_work_sync(&sbi->sb_work); } @@ -220,7 +220,7 @@ parse_options(char *options, kuid_t *uid, kgid_t *gid, int *mode, int *reserved, return 0; if (n != 512 && n != 1024 && n != 2048 && n != 4096) { - printk ("AFFS: Invalid blocksize (512, 1024, 2048, 4096 allowed)\n"); + pr_warn("Invalid blocksize (512, 1024, 2048, 4096 allowed)\n"); return 0; } *blocksize = n; @@ -285,8 +285,8 @@ parse_options(char *options, kuid_t *uid, kgid_t *gid, int *mode, int *reserved, /* Silently ignore the quota options */ break; default: - printk("AFFS: Unrecognized mount option \"%s\" " - "or missing value\n", p); + pr_warn("Unrecognized mount option \"%s\" or missing value\n", + p); return 0; } } @@ -319,7 +319,7 @@ static int affs_fill_super(struct super_block *sb, void *data, int silent) save_mount_options(sb, data); - pr_debug("AFFS: read_super(%s)\n",data ? (const char *)data : "no options"); + pr_debug("read_super(%s)\n", data ? (const char *)data : "no options"); sb->s_magic = AFFS_SUPER_MAGIC; sb->s_op = &affs_sops; @@ -339,7 +339,7 @@ static int affs_fill_super(struct super_block *sb, void *data, int silent) if (!parse_options(data,&uid,&gid,&i,&reserved,&root_block, &blocksize,&sbi->s_prefix, sbi->s_volume, &mount_flags)) { - printk(KERN_ERR "AFFS: Error parsing options\n"); + pr_err("Error parsing options\n"); return -EINVAL; } /* N.B. after this point s_prefix must be released */ @@ -356,7 +356,7 @@ static int affs_fill_super(struct super_block *sb, void *data, int silent) */ size = sb->s_bdev->bd_inode->i_size >> 9; - pr_debug("AFFS: initial blocksize=%d, #blocks=%d\n", 512, size); + pr_debug("initial blocksize=%d, #blocks=%d\n", 512, size); affs_set_blocksize(sb, PAGE_SIZE); /* Try to find root block. Its location depends on the block size. */ @@ -371,7 +371,7 @@ static int affs_fill_super(struct super_block *sb, void *data, int silent) sbi->s_root_block = root_block; if (root_block < 0) sbi->s_root_block = (reserved + size - 1) / 2; - pr_debug("AFFS: setting blocksize to %d\n", blocksize); + pr_debug("setting blocksize to %d\n", blocksize); affs_set_blocksize(sb, blocksize); sbi->s_partition_size = size; @@ -386,7 +386,7 @@ static int affs_fill_super(struct super_block *sb, void *data, int silent) * block behind the calculated one. So we check this one, too. */ for (num_bm = 0; num_bm < 2; num_bm++) { - pr_debug("AFFS: Dev %s, trying root=%u, bs=%d, " + pr_debug("Dev %s, trying root=%u, bs=%d, " "size=%d, reserved=%d\n", sb->s_id, sbi->s_root_block + num_bm, @@ -407,8 +407,7 @@ static int affs_fill_super(struct super_block *sb, void *data, int silent) } } if (!silent) - printk(KERN_ERR "AFFS: No valid root block on device %s\n", - sb->s_id); + pr_err("No valid root block on device %s\n", sb->s_id); return -EINVAL; /* N.B. after this point bh must be released */ @@ -420,7 +419,7 @@ got_root: /* Find out which kind of FS we have */ boot_bh = sb_bread(sb, 0); if (!boot_bh) { - printk(KERN_ERR "AFFS: Cannot read boot block\n"); + pr_err("Cannot read boot block\n"); return -EINVAL; } memcpy(sig, boot_bh->b_data, 4); @@ -433,8 +432,7 @@ got_root: */ if ((chksum == FS_DCFFS || chksum == MUFS_DCFFS || chksum == FS_DCOFS || chksum == MUFS_DCOFS) && !(sb->s_flags & MS_RDONLY)) { - printk(KERN_NOTICE "AFFS: Dircache FS - mounting %s read only\n", - sb->s_id); + pr_notice("Dircache FS - mounting %s read only\n", sb->s_id); sb->s_flags |= MS_RDONLY; } switch (chksum) { @@ -468,14 +466,14 @@ got_root: sb->s_flags |= MS_NOEXEC; break; default: - printk(KERN_ERR "AFFS: Unknown filesystem on device %s: %08X\n", - sb->s_id, chksum); + pr_err("Unknown filesystem on device %s: %08X\n", + sb->s_id, chksum); return -EINVAL; } if (mount_flags & SF_VERBOSE) { u8 len = AFFS_ROOT_TAIL(sb, root_bh)->disk_name[0]; - printk(KERN_NOTICE "AFFS: Mounting volume \"%.*s\": Type=%.3s\\%c, Blocksize=%d\n", + pr_notice("Mounting volume \"%.*s\": Type=%.3s\\%c, Blocksize=%d\n", len > 31 ? 31 : len, AFFS_ROOT_TAIL(sb, root_bh)->disk_name + 1, sig, sig[3] + '0', blocksize); @@ -506,11 +504,11 @@ got_root: sb->s_root = d_make_root(root_inode); if (!sb->s_root) { - printk(KERN_ERR "AFFS: Get root inode failed\n"); + pr_err("AFFS: Get root inode failed\n"); return -ENOMEM; } - pr_debug("AFFS: s_flags=%lX\n",sb->s_flags); + pr_debug("s_flags=%lX\n", sb->s_flags); return 0; } @@ -530,7 +528,7 @@ affs_remount(struct super_block *sb, int *flags, char *data) char volume[32]; char *prefix = NULL; - pr_debug("AFFS: remount(flags=0x%x,opts=\"%s\")\n",*flags,data); + pr_debug("%s(flags=0x%x,opts=\"%s\")\n", __func__, *flags, data); sync_filesystem(sb); *flags |= MS_NODIRATIME; @@ -578,8 +576,9 @@ affs_statfs(struct dentry *dentry, struct kstatfs *buf) int free; u64 id = huge_encode_dev(sb->s_bdev->bd_dev); - pr_debug("AFFS: statfs() partsize=%d, reserved=%d\n",AFFS_SB(sb)->s_partition_size, - AFFS_SB(sb)->s_reserved); + pr_debug("%s() partsize=%d, reserved=%d\n", + __func__, AFFS_SB(sb)->s_partition_size, + AFFS_SB(sb)->s_reserved); free = affs_count_free_blocks(sb); buf->f_type = AFFS_SUPER_MAGIC; diff --git a/fs/affs/symlink.c b/fs/affs/symlink.c index ee00f08c4f53..f39b71c3981e 100644 --- a/fs/affs/symlink.c +++ b/fs/affs/symlink.c @@ -21,7 +21,7 @@ static int affs_symlink_readpage(struct file *file, struct page *page) char c; char lc; - pr_debug("AFFS: follow_link(ino=%lu)\n",inode->i_ino); + pr_debug("follow_link(ino=%lu)\n", inode->i_ino); err = -EIO; bh = affs_bread(inode->i_sb, inode->i_ino); diff --git a/fs/afs/flock.c b/fs/afs/flock.c index a8cf2cff836c..4baf1d2b39e4 100644 --- a/fs/afs/flock.c +++ b/fs/afs/flock.c @@ -555,10 +555,6 @@ int afs_flock(struct file *file, int cmd, struct file_lock *fl) return -ENOLCK; /* we're simulating flock() locks using posix locks on the server */ - fl->fl_owner = (fl_owner_t) file; - fl->fl_start = 0; - fl->fl_end = OFFSET_MAX; - if (fl->fl_type == F_UNLCK) return afs_do_unlk(file, fl); return afs_do_setlk(file, fl); diff --git a/fs/autofs4/dev-ioctl.c b/fs/autofs4/dev-ioctl.c index 232e03d4780d..5b570b6efa28 100644 --- a/fs/autofs4/dev-ioctl.c +++ b/fs/autofs4/dev-ioctl.c @@ -737,7 +737,7 @@ MODULE_ALIAS_MISCDEV(AUTOFS_MINOR); MODULE_ALIAS("devname:autofs"); /* Register/deregister misc character device */ -int autofs_dev_ioctl_init(void) +int __init autofs_dev_ioctl_init(void) { int r; diff --git a/fs/befs/btree.c b/fs/befs/btree.c index a2cd305a993a..9c7faa8a9288 100644 --- a/fs/befs/btree.c +++ b/fs/befs/btree.c @@ -318,7 +318,7 @@ befs_btree_find(struct super_block *sb, befs_data_stream * ds, * befs_find_key - Search for a key within a node * @sb: Filesystem superblock * @node: Node to find the key within - * @key: Keystring to search for + * @findkey: Keystring to search for * @value: If key is found, the value stored with the key is put here * * finds exact match if one exists, and returns BEFS_BT_MATCH @@ -405,7 +405,7 @@ befs_find_key(struct super_block *sb, befs_btree_node * node, * Heres how it works: Key_no is the index of the key/value pair to * return in keybuf/value. * Bufsize is the size of keybuf (BEFS_NAME_LEN+1 is a good size). Keysize is - * the number of charecters in the key (just a convenience). + * the number of characters in the key (just a convenience). * * Algorithm: * Get the first leafnode of the tree. See if the requested key is in that @@ -502,12 +502,11 @@ befs_btree_read(struct super_block *sb, befs_data_stream * ds, "for key of size %d", __func__, bufsize, keylen); brelse(this_node->bh); goto error_alloc; - }; + } - strncpy(keybuf, keystart, keylen); + strlcpy(keybuf, keystart, keylen + 1); *value = fs64_to_cpu(sb, valarray[cur_key]); *keysize = keylen; - keybuf[keylen] = '\0'; befs_debug(sb, "Read [%llu,%d]: Key \"%.*s\", Value %llu", node_off, cur_key, keylen, keybuf, *value); @@ -707,7 +706,7 @@ befs_bt_get_key(struct super_block *sb, befs_btree_node * node, * @key1: pointer to the first key to be compared * @keylen1: length in bytes of key1 * @key2: pointer to the second key to be compared - * @kelen2: length in bytes of key2 + * @keylen2: length in bytes of key2 * * Returns 0 if @key1 and @key2 are equal. * Returns >0 if @key1 is greater. diff --git a/fs/befs/datastream.c b/fs/befs/datastream.c index c467bebd50af..1e8e0b8d8836 100644 --- a/fs/befs/datastream.c +++ b/fs/befs/datastream.c @@ -116,7 +116,7 @@ befs_fblock2brun(struct super_block *sb, befs_data_stream * data, * befs_read_lsmylink - read long symlink from datastream. * @sb: Filesystem superblock * @ds: Datastrem to read from - * @buf: Buffer in which to place long symlink data + * @buff: Buffer in which to place long symlink data * @len: Length of the long symlink in bytes * * Returns the number of bytes read diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c index d626756ff721..a16fbd4e8241 100644 --- a/fs/befs/linuxvfs.c +++ b/fs/befs/linuxvfs.c @@ -133,14 +133,6 @@ befs_get_block(struct inode *inode, sector_t block, befs_debug(sb, "---> befs_get_block() for inode %lu, block %ld", (unsigned long)inode->i_ino, (long)block); - - if (block < 0) { - befs_error(sb, "befs_get_block() was asked for a block " - "number less than zero: block %ld in inode %lu", - (long)block, (unsigned long)inode->i_ino); - return -EIO; - } - if (create) { befs_error(sb, "befs_get_block() was asked to write to " "block %ld in inode %lu", (long)block, @@ -396,9 +388,8 @@ static struct inode *befs_iget(struct super_block *sb, unsigned long ino) if (S_ISLNK(inode->i_mode) && !(befs_ino->i_flags & BEFS_LONG_SYMLINK)){ inode->i_size = 0; inode->i_blocks = befs_sb->block_size / VFS_BLOCK_SIZE; - strncpy(befs_ino->i_data.symlink, raw_inode->data.symlink, - BEFS_SYMLINK_LEN - 1); - befs_ino->i_data.symlink[BEFS_SYMLINK_LEN - 1] = '\0'; + strlcpy(befs_ino->i_data.symlink, raw_inode->data.symlink, + BEFS_SYMLINK_LEN); } else { int num_blks; @@ -591,21 +582,21 @@ befs_utf2nls(struct super_block *sb, const char *in, /** * befs_nls2utf - Convert NLS string to utf8 encodeing * @sb: Superblock - * @src: Input string buffer in NLS format - * @srclen: Length of input string in bytes - * @dest: The output string in UTF-8 format - * @destlen: Length of the output buffer + * @in: Input string buffer in NLS format + * @in_len: Length of input string in bytes + * @out: The output string in UTF-8 format + * @out_len: Length of the output buffer * - * Converts input string @src, which is in the format of the loaded NLS map, + * Converts input string @in, which is in the format of the loaded NLS map, * into a utf8 string. * - * The destination string @dest is allocated by this function and the caller is + * The destination string @out is allocated by this function and the caller is * responsible for freeing it with kfree() * - * On return, *@destlen is the length of @dest in bytes. + * On return, *@out_len is the length of @out in bytes. * * On success, the return value is the number of utf8 characters written to - * the output buffer @dest. + * the output buffer @out. * * On Failure, a negative number coresponding to the error code is returned. */ diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c index aa3cb626671e..3892c1a23241 100644 --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -1108,6 +1108,14 @@ static bool always_dump_vma(struct vm_area_struct *vma) /* Any vsyscall mappings? */ if (vma == get_gate_vma(vma->vm_mm)) return true; + + /* + * Assume that all vmas with a .name op should always be dumped. + * If this changes, a new vm_ops field can easily be added. + */ + if (vma->vm_ops && vma->vm_ops->name && vma->vm_ops->name(vma)) + return true; + /* * arch_vma_name() returns non-NULL for special architecture mappings, * such as vDSO sections. @@ -1686,7 +1694,7 @@ static size_t get_note_info_size(struct elf_note_info *info) static int write_note_info(struct elf_note_info *info, struct coredump_params *cprm) { - bool first = 1; + bool first = true; struct elf_thread_core_info *t = info->thread; do { @@ -1710,7 +1718,7 @@ static int write_note_info(struct elf_note_info *info, !writenote(&t->notes[i], cprm)) return 0; - first = 0; + first = false; t = t->next; } while (t); diff --git a/fs/binfmt_flat.c b/fs/binfmt_flat.c index d50bbe59da1e..f723cd3a455c 100644 --- a/fs/binfmt_flat.c +++ b/fs/binfmt_flat.c @@ -380,7 +380,7 @@ failed: /****************************************************************************/ -void old_reloc(unsigned long rl) +static void old_reloc(unsigned long rl) { #ifdef DEBUG char *segment[] = { "TEXT", "DATA", "BSS", "*UNKNOWN*" }; diff --git a/fs/bio-integrity.c b/fs/bio-integrity.c deleted file mode 100644 index 1c2ce0c87711..000000000000 --- a/fs/bio-integrity.c +++ /dev/null @@ -1,657 +0,0 @@ -/* - * bio-integrity.c - bio data integrity extensions - * - * Copyright (C) 2007, 2008, 2009 Oracle Corporation - * Written by: Martin K. Petersen <martin.petersen@oracle.com> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License version - * 2 as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; see the file COPYING. If not, write to - * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, - * USA. - * - */ - -#include <linux/blkdev.h> -#include <linux/mempool.h> -#include <linux/export.h> -#include <linux/bio.h> -#include <linux/workqueue.h> -#include <linux/slab.h> - -#define BIP_INLINE_VECS 4 - -static struct kmem_cache *bip_slab; -static struct workqueue_struct *kintegrityd_wq; - -/** - * bio_integrity_alloc - Allocate integrity payload and attach it to bio - * @bio: bio to attach integrity metadata to - * @gfp_mask: Memory allocation mask - * @nr_vecs: Number of integrity metadata scatter-gather elements - * - * Description: This function prepares a bio for attaching integrity - * metadata. nr_vecs specifies the maximum number of pages containing - * integrity metadata that can be attached. - */ -struct bio_integrity_payload *bio_integrity_alloc(struct bio *bio, - gfp_t gfp_mask, - unsigned int nr_vecs) -{ - struct bio_integrity_payload *bip; - struct bio_set *bs = bio->bi_pool; - unsigned long idx = BIO_POOL_NONE; - unsigned inline_vecs; - - if (!bs) { - bip = kmalloc(sizeof(struct bio_integrity_payload) + - sizeof(struct bio_vec) * nr_vecs, gfp_mask); - inline_vecs = nr_vecs; - } else { - bip = mempool_alloc(bs->bio_integrity_pool, gfp_mask); - inline_vecs = BIP_INLINE_VECS; - } - - if (unlikely(!bip)) - return NULL; - - memset(bip, 0, sizeof(*bip)); - - if (nr_vecs > inline_vecs) { - bip->bip_vec = bvec_alloc(gfp_mask, nr_vecs, &idx, - bs->bvec_integrity_pool); - if (!bip->bip_vec) - goto err; - } else { - bip->bip_vec = bip->bip_inline_vecs; - } - - bip->bip_slab = idx; - bip->bip_bio = bio; - bio->bi_integrity = bip; - - return bip; -err: - mempool_free(bip, bs->bio_integrity_pool); - return NULL; -} -EXPORT_SYMBOL(bio_integrity_alloc); - -/** - * bio_integrity_free - Free bio integrity payload - * @bio: bio containing bip to be freed - * - * Description: Used to free the integrity portion of a bio. Usually - * called from bio_free(). - */ -void bio_integrity_free(struct bio *bio) -{ - struct bio_integrity_payload *bip = bio->bi_integrity; - struct bio_set *bs = bio->bi_pool; - - if (bip->bip_owns_buf) - kfree(bip->bip_buf); - - if (bs) { - if (bip->bip_slab != BIO_POOL_NONE) - bvec_free(bs->bvec_integrity_pool, bip->bip_vec, - bip->bip_slab); - - mempool_free(bip, bs->bio_integrity_pool); - } else { - kfree(bip); - } - - bio->bi_integrity = NULL; -} -EXPORT_SYMBOL(bio_integrity_free); - -static inline unsigned int bip_integrity_vecs(struct bio_integrity_payload *bip) -{ - if (bip->bip_slab == BIO_POOL_NONE) - return BIP_INLINE_VECS; - - return bvec_nr_vecs(bip->bip_slab); -} - -/** - * bio_integrity_add_page - Attach integrity metadata - * @bio: bio to update - * @page: page containing integrity metadata - * @len: number of bytes of integrity metadata in page - * @offset: start offset within page - * - * Description: Attach a page containing integrity metadata to bio. - */ -int bio_integrity_add_page(struct bio *bio, struct page *page, - unsigned int len, unsigned int offset) -{ - struct bio_integrity_payload *bip = bio->bi_integrity; - struct bio_vec *iv; - - if (bip->bip_vcnt >= bip_integrity_vecs(bip)) { - printk(KERN_ERR "%s: bip_vec full\n", __func__); - return 0; - } - - iv = bip->bip_vec + bip->bip_vcnt; - - iv->bv_page = page; - iv->bv_len = len; - iv->bv_offset = offset; - bip->bip_vcnt++; - - return len; -} -EXPORT_SYMBOL(bio_integrity_add_page); - -static int bdev_integrity_enabled(struct block_device *bdev, int rw) -{ - struct blk_integrity *bi = bdev_get_integrity(bdev); - - if (bi == NULL) - return 0; - - if (rw == READ && bi->verify_fn != NULL && - (bi->flags & INTEGRITY_FLAG_READ)) - return 1; - - if (rw == WRITE && bi->generate_fn != NULL && - (bi->flags & INTEGRITY_FLAG_WRITE)) - return 1; - - return 0; -} - -/** - * bio_integrity_enabled - Check whether integrity can be passed - * @bio: bio to check - * - * Description: Determines whether bio_integrity_prep() can be called - * on this bio or not. bio data direction and target device must be - * set prior to calling. The functions honors the write_generate and - * read_verify flags in sysfs. - */ -int bio_integrity_enabled(struct bio *bio) -{ - if (!bio_is_rw(bio)) - return 0; - - /* Already protected? */ - if (bio_integrity(bio)) - return 0; - - return bdev_integrity_enabled(bio->bi_bdev, bio_data_dir(bio)); -} -EXPORT_SYMBOL(bio_integrity_enabled); - -/** - * bio_integrity_hw_sectors - Convert 512b sectors to hardware ditto - * @bi: blk_integrity profile for device - * @sectors: Number of 512 sectors to convert - * - * Description: The block layer calculates everything in 512 byte - * sectors but integrity metadata is done in terms of the hardware - * sector size of the storage device. Convert the block layer sectors - * to physical sectors. - */ -static inline unsigned int bio_integrity_hw_sectors(struct blk_integrity *bi, - unsigned int sectors) -{ - /* At this point there are only 512b or 4096b DIF/EPP devices */ - if (bi->sector_size == 4096) - return sectors >>= 3; - - return sectors; -} - -static inline unsigned int bio_integrity_bytes(struct blk_integrity *bi, - unsigned int sectors) -{ - return bio_integrity_hw_sectors(bi, sectors) * bi->tuple_size; -} - -/** - * bio_integrity_tag_size - Retrieve integrity tag space - * @bio: bio to inspect - * - * Description: Returns the maximum number of tag bytes that can be - * attached to this bio. Filesystems can use this to determine how - * much metadata to attach to an I/O. - */ -unsigned int bio_integrity_tag_size(struct bio *bio) -{ - struct blk_integrity *bi = bdev_get_integrity(bio->bi_bdev); - - BUG_ON(bio->bi_iter.bi_size == 0); - - return bi->tag_size * (bio->bi_iter.bi_size / bi->sector_size); -} -EXPORT_SYMBOL(bio_integrity_tag_size); - -static int bio_integrity_tag(struct bio *bio, void *tag_buf, unsigned int len, - int set) -{ - struct bio_integrity_payload *bip = bio->bi_integrity; - struct blk_integrity *bi = bdev_get_integrity(bio->bi_bdev); - unsigned int nr_sectors; - - BUG_ON(bip->bip_buf == NULL); - - if (bi->tag_size == 0) - return -1; - - nr_sectors = bio_integrity_hw_sectors(bi, - DIV_ROUND_UP(len, bi->tag_size)); - - if (nr_sectors * bi->tuple_size > bip->bip_iter.bi_size) { - printk(KERN_ERR "%s: tag too big for bio: %u > %u\n", __func__, - nr_sectors * bi->tuple_size, bip->bip_iter.bi_size); - return -1; - } - - if (set) - bi->set_tag_fn(bip->bip_buf, tag_buf, nr_sectors); - else - bi->get_tag_fn(bip->bip_buf, tag_buf, nr_sectors); - - return 0; -} - -/** - * bio_integrity_set_tag - Attach a tag buffer to a bio - * @bio: bio to attach buffer to - * @tag_buf: Pointer to a buffer containing tag data - * @len: Length of the included buffer - * - * Description: Use this function to tag a bio by leveraging the extra - * space provided by devices formatted with integrity protection. The - * size of the integrity buffer must be <= to the size reported by - * bio_integrity_tag_size(). - */ -int bio_integrity_set_tag(struct bio *bio, void *tag_buf, unsigned int len) -{ - BUG_ON(bio_data_dir(bio) != WRITE); - - return bio_integrity_tag(bio, tag_buf, len, 1); -} -EXPORT_SYMBOL(bio_integrity_set_tag); - -/** - * bio_integrity_get_tag - Retrieve a tag buffer from a bio - * @bio: bio to retrieve buffer from - * @tag_buf: Pointer to a buffer for the tag data - * @len: Length of the target buffer - * - * Description: Use this function to retrieve the tag buffer from a - * completed I/O. The size of the integrity buffer must be <= to the - * size reported by bio_integrity_tag_size(). - */ -int bio_integrity_get_tag(struct bio *bio, void *tag_buf, unsigned int len) -{ - BUG_ON(bio_data_dir(bio) != READ); - - return bio_integrity_tag(bio, tag_buf, len, 0); -} -EXPORT_SYMBOL(bio_integrity_get_tag); - -/** - * bio_integrity_generate_verify - Generate/verify integrity metadata for a bio - * @bio: bio to generate/verify integrity metadata for - * @operate: operate number, 1 for generate, 0 for verify - */ -static int bio_integrity_generate_verify(struct bio *bio, int operate) -{ - struct blk_integrity *bi = bdev_get_integrity(bio->bi_bdev); - struct blk_integrity_exchg bix; - struct bio_vec *bv; - sector_t sector; - unsigned int sectors, ret = 0, i; - void *prot_buf = bio->bi_integrity->bip_buf; - - if (operate) - sector = bio->bi_iter.bi_sector; - else - sector = bio->bi_integrity->bip_iter.bi_sector; - - bix.disk_name = bio->bi_bdev->bd_disk->disk_name; - bix.sector_size = bi->sector_size; - - bio_for_each_segment_all(bv, bio, i) { - void *kaddr = kmap_atomic(bv->bv_page); - bix.data_buf = kaddr + bv->bv_offset; - bix.data_size = bv->bv_len; - bix.prot_buf = prot_buf; - bix.sector = sector; - - if (operate) - bi->generate_fn(&bix); - else { - ret = bi->verify_fn(&bix); - if (ret) { - kunmap_atomic(kaddr); - return ret; - } - } - - sectors = bv->bv_len / bi->sector_size; - sector += sectors; - prot_buf += sectors * bi->tuple_size; - - kunmap_atomic(kaddr); - } - return ret; -} - -/** - * bio_integrity_generate - Generate integrity metadata for a bio - * @bio: bio to generate integrity metadata for - * - * Description: Generates integrity metadata for a bio by calling the - * block device's generation callback function. The bio must have a - * bip attached with enough room to accommodate the generated - * integrity metadata. - */ -static void bio_integrity_generate(struct bio *bio) -{ - bio_integrity_generate_verify(bio, 1); -} - -static inline unsigned short blk_integrity_tuple_size(struct blk_integrity *bi) -{ - if (bi) - return bi->tuple_size; - - return 0; -} - -/** - * bio_integrity_prep - Prepare bio for integrity I/O - * @bio: bio to prepare - * - * Description: Allocates a buffer for integrity metadata, maps the - * pages and attaches them to a bio. The bio must have data - * direction, target device and start sector set priot to calling. In - * the WRITE case, integrity metadata will be generated using the - * block device's integrity function. In the READ case, the buffer - * will be prepared for DMA and a suitable end_io handler set up. - */ -int bio_integrity_prep(struct bio *bio) -{ - struct bio_integrity_payload *bip; - struct blk_integrity *bi; - struct request_queue *q; - void *buf; - unsigned long start, end; - unsigned int len, nr_pages; - unsigned int bytes, offset, i; - unsigned int sectors; - - bi = bdev_get_integrity(bio->bi_bdev); - q = bdev_get_queue(bio->bi_bdev); - BUG_ON(bi == NULL); - BUG_ON(bio_integrity(bio)); - - sectors = bio_integrity_hw_sectors(bi, bio_sectors(bio)); - - /* Allocate kernel buffer for protection data */ - len = sectors * blk_integrity_tuple_size(bi); - buf = kmalloc(len, GFP_NOIO | q->bounce_gfp); - if (unlikely(buf == NULL)) { - printk(KERN_ERR "could not allocate integrity buffer\n"); - return -ENOMEM; - } - - end = (((unsigned long) buf) + len + PAGE_SIZE - 1) >> PAGE_SHIFT; - start = ((unsigned long) buf) >> PAGE_SHIFT; - nr_pages = end - start; - - /* Allocate bio integrity payload and integrity vectors */ - bip = bio_integrity_alloc(bio, GFP_NOIO, nr_pages); - if (unlikely(bip == NULL)) { - printk(KERN_ERR "could not allocate data integrity bioset\n"); - kfree(buf); - return -EIO; - } - - bip->bip_owns_buf = 1; - bip->bip_buf = buf; - bip->bip_iter.bi_size = len; - bip->bip_iter.bi_sector = bio->bi_iter.bi_sector; - - /* Map it */ - offset = offset_in_page(buf); - for (i = 0 ; i < nr_pages ; i++) { - int ret; - bytes = PAGE_SIZE - offset; - - if (len <= 0) - break; - - if (bytes > len) - bytes = len; - - ret = bio_integrity_add_page(bio, virt_to_page(buf), - bytes, offset); - - if (ret == 0) - return 0; - - if (ret < bytes) - break; - - buf += bytes; - len -= bytes; - offset = 0; - } - - /* Install custom I/O completion handler if read verify is enabled */ - if (bio_data_dir(bio) == READ) { - bip->bip_end_io = bio->bi_end_io; - bio->bi_end_io = bio_integrity_endio; - } - - /* Auto-generate integrity metadata if this is a write */ - if (bio_data_dir(bio) == WRITE) - bio_integrity_generate(bio); - - return 0; -} -EXPORT_SYMBOL(bio_integrity_prep); - -/** - * bio_integrity_verify - Verify integrity metadata for a bio - * @bio: bio to verify - * - * Description: This function is called to verify the integrity of a - * bio. The data in the bio io_vec is compared to the integrity - * metadata returned by the HBA. - */ -static int bio_integrity_verify(struct bio *bio) -{ - return bio_integrity_generate_verify(bio, 0); -} - -/** - * bio_integrity_verify_fn - Integrity I/O completion worker - * @work: Work struct stored in bio to be verified - * - * Description: This workqueue function is called to complete a READ - * request. The function verifies the transferred integrity metadata - * and then calls the original bio end_io function. - */ -static void bio_integrity_verify_fn(struct work_struct *work) -{ - struct bio_integrity_payload *bip = - container_of(work, struct bio_integrity_payload, bip_work); - struct bio *bio = bip->bip_bio; - int error; - - error = bio_integrity_verify(bio); - - /* Restore original bio completion handler */ - bio->bi_end_io = bip->bip_end_io; - bio_endio_nodec(bio, error); -} - -/** - * bio_integrity_endio - Integrity I/O completion function - * @bio: Protected bio - * @error: Pointer to errno - * - * Description: Completion for integrity I/O - * - * Normally I/O completion is done in interrupt context. However, - * verifying I/O integrity is a time-consuming task which must be run - * in process context. This function postpones completion - * accordingly. - */ -void bio_integrity_endio(struct bio *bio, int error) -{ - struct bio_integrity_payload *bip = bio->bi_integrity; - - BUG_ON(bip->bip_bio != bio); - - /* In case of an I/O error there is no point in verifying the - * integrity metadata. Restore original bio end_io handler - * and run it. - */ - if (error) { - bio->bi_end_io = bip->bip_end_io; - bio_endio(bio, error); - - return; - } - - INIT_WORK(&bip->bip_work, bio_integrity_verify_fn); - queue_work(kintegrityd_wq, &bip->bip_work); -} -EXPORT_SYMBOL(bio_integrity_endio); - -/** - * bio_integrity_advance - Advance integrity vector - * @bio: bio whose integrity vector to update - * @bytes_done: number of data bytes that have been completed - * - * Description: This function calculates how many integrity bytes the - * number of completed data bytes correspond to and advances the - * integrity vector accordingly. - */ -void bio_integrity_advance(struct bio *bio, unsigned int bytes_done) -{ - struct bio_integrity_payload *bip = bio->bi_integrity; - struct blk_integrity *bi = bdev_get_integrity(bio->bi_bdev); - unsigned bytes = bio_integrity_bytes(bi, bytes_done >> 9); - - bvec_iter_advance(bip->bip_vec, &bip->bip_iter, bytes); -} -EXPORT_SYMBOL(bio_integrity_advance); - -/** - * bio_integrity_trim - Trim integrity vector - * @bio: bio whose integrity vector to update - * @offset: offset to first data sector - * @sectors: number of data sectors - * - * Description: Used to trim the integrity vector in a cloned bio. - * The ivec will be advanced corresponding to 'offset' data sectors - * and the length will be truncated corresponding to 'len' data - * sectors. - */ -void bio_integrity_trim(struct bio *bio, unsigned int offset, - unsigned int sectors) -{ - struct bio_integrity_payload *bip = bio->bi_integrity; - struct blk_integrity *bi = bdev_get_integrity(bio->bi_bdev); - - bio_integrity_advance(bio, offset << 9); - bip->bip_iter.bi_size = bio_integrity_bytes(bi, sectors); -} -EXPORT_SYMBOL(bio_integrity_trim); - -/** - * bio_integrity_clone - Callback for cloning bios with integrity metadata - * @bio: New bio - * @bio_src: Original bio - * @gfp_mask: Memory allocation mask - * - * Description: Called to allocate a bip when cloning a bio - */ -int bio_integrity_clone(struct bio *bio, struct bio *bio_src, - gfp_t gfp_mask) -{ - struct bio_integrity_payload *bip_src = bio_src->bi_integrity; - struct bio_integrity_payload *bip; - - BUG_ON(bip_src == NULL); - - bip = bio_integrity_alloc(bio, gfp_mask, bip_src->bip_vcnt); - - if (bip == NULL) - return -EIO; - - memcpy(bip->bip_vec, bip_src->bip_vec, - bip_src->bip_vcnt * sizeof(struct bio_vec)); - - bip->bip_vcnt = bip_src->bip_vcnt; - bip->bip_iter = bip_src->bip_iter; - - return 0; -} -EXPORT_SYMBOL(bio_integrity_clone); - -int bioset_integrity_create(struct bio_set *bs, int pool_size) -{ - if (bs->bio_integrity_pool) - return 0; - - bs->bio_integrity_pool = mempool_create_slab_pool(pool_size, bip_slab); - if (!bs->bio_integrity_pool) - return -1; - - bs->bvec_integrity_pool = biovec_create_pool(bs, pool_size); - if (!bs->bvec_integrity_pool) { - mempool_destroy(bs->bio_integrity_pool); - return -1; - } - - return 0; -} -EXPORT_SYMBOL(bioset_integrity_create); - -void bioset_integrity_free(struct bio_set *bs) -{ - if (bs->bio_integrity_pool) - mempool_destroy(bs->bio_integrity_pool); - - if (bs->bvec_integrity_pool) - mempool_destroy(bs->bvec_integrity_pool); -} -EXPORT_SYMBOL(bioset_integrity_free); - -void __init bio_integrity_init(void) -{ - /* - * kintegrityd won't block much but may burn a lot of CPU cycles. - * Make it highpri CPU intensive wq with max concurrency of 1. - */ - kintegrityd_wq = alloc_workqueue("kintegrityd", WQ_MEM_RECLAIM | - WQ_HIGHPRI | WQ_CPU_INTENSIVE, 1); - if (!kintegrityd_wq) - panic("Failed to create kintegrityd\n"); - - bip_slab = kmem_cache_create("bio_integrity_payload", - sizeof(struct bio_integrity_payload) + - sizeof(struct bio_vec) * BIP_INLINE_VECS, - 0, SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL); - if (!bip_slab) - panic("Failed to create slab\n"); -} diff --git a/fs/bio.c b/fs/bio.c deleted file mode 100644 index 6f0362b77806..000000000000 --- a/fs/bio.c +++ /dev/null @@ -1,2037 +0,0 @@ -/* - * Copyright (C) 2001 Jens Axboe <axboe@kernel.dk> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public Licens - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111- - * - */ -#include <linux/mm.h> -#include <linux/swap.h> -#include <linux/bio.h> -#include <linux/blkdev.h> -#include <linux/uio.h> -#include <linux/iocontext.h> -#include <linux/slab.h> -#include <linux/init.h> -#include <linux/kernel.h> -#include <linux/export.h> -#include <linux/mempool.h> -#include <linux/workqueue.h> -#include <linux/cgroup.h> -#include <scsi/sg.h> /* for struct sg_iovec */ - -#include <trace/events/block.h> - -/* - * Test patch to inline a certain number of bi_io_vec's inside the bio - * itself, to shrink a bio data allocation from two mempool calls to one - */ -#define BIO_INLINE_VECS 4 - -/* - * if you change this list, also change bvec_alloc or things will - * break badly! cannot be bigger than what you can fit into an - * unsigned short - */ -#define BV(x) { .nr_vecs = x, .name = "biovec-"__stringify(x) } -static struct biovec_slab bvec_slabs[BIOVEC_NR_POOLS] __read_mostly = { - BV(1), BV(4), BV(16), BV(64), BV(128), BV(BIO_MAX_PAGES), -}; -#undef BV - -/* - * fs_bio_set is the bio_set containing bio and iovec memory pools used by - * IO code that does not need private memory pools. - */ -struct bio_set *fs_bio_set; -EXPORT_SYMBOL(fs_bio_set); - -/* - * Our slab pool management - */ -struct bio_slab { - struct kmem_cache *slab; - unsigned int slab_ref; - unsigned int slab_size; - char name[8]; -}; -static DEFINE_MUTEX(bio_slab_lock); -static struct bio_slab *bio_slabs; -static unsigned int bio_slab_nr, bio_slab_max; - -static struct kmem_cache *bio_find_or_create_slab(unsigned int extra_size) -{ - unsigned int sz = sizeof(struct bio) + extra_size; - struct kmem_cache *slab = NULL; - struct bio_slab *bslab, *new_bio_slabs; - unsigned int new_bio_slab_max; - unsigned int i, entry = -1; - - mutex_lock(&bio_slab_lock); - - i = 0; - while (i < bio_slab_nr) { - bslab = &bio_slabs[i]; - - if (!bslab->slab && entry == -1) - entry = i; - else if (bslab->slab_size == sz) { - slab = bslab->slab; - bslab->slab_ref++; - break; - } - i++; - } - - if (slab) - goto out_unlock; - - if (bio_slab_nr == bio_slab_max && entry == -1) { - new_bio_slab_max = bio_slab_max << 1; - new_bio_slabs = krealloc(bio_slabs, - new_bio_slab_max * sizeof(struct bio_slab), - GFP_KERNEL); - if (!new_bio_slabs) - goto out_unlock; - bio_slab_max = new_bio_slab_max; - bio_slabs = new_bio_slabs; - } - if (entry == -1) - entry = bio_slab_nr++; - - bslab = &bio_slabs[entry]; - - snprintf(bslab->name, sizeof(bslab->name), "bio-%d", entry); - slab = kmem_cache_create(bslab->name, sz, 0, SLAB_HWCACHE_ALIGN, NULL); - if (!slab) - goto out_unlock; - - bslab->slab = slab; - bslab->slab_ref = 1; - bslab->slab_size = sz; -out_unlock: - mutex_unlock(&bio_slab_lock); - return slab; -} - -static void bio_put_slab(struct bio_set *bs) -{ - struct bio_slab *bslab = NULL; - unsigned int i; - - mutex_lock(&bio_slab_lock); - - for (i = 0; i < bio_slab_nr; i++) { - if (bs->bio_slab == bio_slabs[i].slab) { - bslab = &bio_slabs[i]; - break; - } - } - - if (WARN(!bslab, KERN_ERR "bio: unable to find slab!\n")) - goto out; - - WARN_ON(!bslab->slab_ref); - - if (--bslab->slab_ref) - goto out; - - kmem_cache_destroy(bslab->slab); - bslab->slab = NULL; - -out: - mutex_unlock(&bio_slab_lock); -} - -unsigned int bvec_nr_vecs(unsigned short idx) -{ - return bvec_slabs[idx].nr_vecs; -} - -void bvec_free(mempool_t *pool, struct bio_vec *bv, unsigned int idx) -{ - BIO_BUG_ON(idx >= BIOVEC_NR_POOLS); - - if (idx == BIOVEC_MAX_IDX) - mempool_free(bv, pool); - else { - struct biovec_slab *bvs = bvec_slabs + idx; - - kmem_cache_free(bvs->slab, bv); - } -} - -struct bio_vec *bvec_alloc(gfp_t gfp_mask, int nr, unsigned long *idx, - mempool_t *pool) -{ - struct bio_vec *bvl; - - /* - * see comment near bvec_array define! - */ - switch (nr) { - case 1: - *idx = 0; - break; - case 2 ... 4: - *idx = 1; - break; - case 5 ... 16: - *idx = 2; - break; - case 17 ... 64: - *idx = 3; - break; - case 65 ... 128: - *idx = 4; - break; - case 129 ... BIO_MAX_PAGES: - *idx = 5; - break; - default: - return NULL; - } - - /* - * idx now points to the pool we want to allocate from. only the - * 1-vec entry pool is mempool backed. - */ - if (*idx == BIOVEC_MAX_IDX) { -fallback: - bvl = mempool_alloc(pool, gfp_mask); - } else { - struct biovec_slab *bvs = bvec_slabs + *idx; - gfp_t __gfp_mask = gfp_mask & ~(__GFP_WAIT | __GFP_IO); - - /* - * Make this allocation restricted and don't dump info on - * allocation failures, since we'll fallback to the mempool - * in case of failure. - */ - __gfp_mask |= __GFP_NOMEMALLOC | __GFP_NORETRY | __GFP_NOWARN; - - /* - * Try a slab allocation. If this fails and __GFP_WAIT - * is set, retry with the 1-entry mempool - */ - bvl = kmem_cache_alloc(bvs->slab, __gfp_mask); - if (unlikely(!bvl && (gfp_mask & __GFP_WAIT))) { - *idx = BIOVEC_MAX_IDX; - goto fallback; - } - } - - return bvl; -} - -static void __bio_free(struct bio *bio) -{ - bio_disassociate_task(bio); - - if (bio_integrity(bio)) - bio_integrity_free(bio); -} - -static void bio_free(struct bio *bio) -{ - struct bio_set *bs = bio->bi_pool; - void *p; - - __bio_free(bio); - - if (bs) { - if (bio_flagged(bio, BIO_OWNS_VEC)) - bvec_free(bs->bvec_pool, bio->bi_io_vec, BIO_POOL_IDX(bio)); - - /* - * If we have front padding, adjust the bio pointer before freeing - */ - p = bio; - p -= bs->front_pad; - - mempool_free(p, bs->bio_pool); - } else { - /* Bio was allocated by bio_kmalloc() */ - kfree(bio); - } -} - -void bio_init(struct bio *bio) -{ - memset(bio, 0, sizeof(*bio)); - bio->bi_flags = 1 << BIO_UPTODATE; - atomic_set(&bio->bi_remaining, 1); - atomic_set(&bio->bi_cnt, 1); -} -EXPORT_SYMBOL(bio_init); - -/** - * bio_reset - reinitialize a bio - * @bio: bio to reset - * - * Description: - * After calling bio_reset(), @bio will be in the same state as a freshly - * allocated bio returned bio bio_alloc_bioset() - the only fields that are - * preserved are the ones that are initialized by bio_alloc_bioset(). See - * comment in struct bio. - */ -void bio_reset(struct bio *bio) -{ - unsigned long flags = bio->bi_flags & (~0UL << BIO_RESET_BITS); - - __bio_free(bio); - - memset(bio, 0, BIO_RESET_BYTES); - bio->bi_flags = flags|(1 << BIO_UPTODATE); - atomic_set(&bio->bi_remaining, 1); -} -EXPORT_SYMBOL(bio_reset); - -static void bio_chain_endio(struct bio *bio, int error) -{ - bio_endio(bio->bi_private, error); - bio_put(bio); -} - -/** - * bio_chain - chain bio completions - * - * The caller won't have a bi_end_io called when @bio completes - instead, - * @parent's bi_end_io won't be called until both @parent and @bio have - * completed; the chained bio will also be freed when it completes. - * - * The caller must not set bi_private or bi_end_io in @bio. - */ -void bio_chain(struct bio *bio, struct bio *parent) -{ - BUG_ON(bio->bi_private || bio->bi_end_io); - - bio->bi_private = parent; - bio->bi_end_io = bio_chain_endio; - atomic_inc(&parent->bi_remaining); -} -EXPORT_SYMBOL(bio_chain); - -static void bio_alloc_rescue(struct work_struct *work) -{ - struct bio_set *bs = container_of(work, struct bio_set, rescue_work); - struct bio *bio; - - while (1) { - spin_lock(&bs->rescue_lock); - bio = bio_list_pop(&bs->rescue_list); - spin_unlock(&bs->rescue_lock); - - if (!bio) - break; - - generic_make_request(bio); - } -} - -static void punt_bios_to_rescuer(struct bio_set *bs) -{ - struct bio_list punt, nopunt; - struct bio *bio; - - /* - * In order to guarantee forward progress we must punt only bios that - * were allocated from this bio_set; otherwise, if there was a bio on - * there for a stacking driver higher up in the stack, processing it - * could require allocating bios from this bio_set, and doing that from - * our own rescuer would be bad. - * - * Since bio lists are singly linked, pop them all instead of trying to - * remove from the middle of the list: - */ - - bio_list_init(&punt); - bio_list_init(&nopunt); - - while ((bio = bio_list_pop(current->bio_list))) - bio_list_add(bio->bi_pool == bs ? &punt : &nopunt, bio); - - *current->bio_list = nopunt; - - spin_lock(&bs->rescue_lock); - bio_list_merge(&bs->rescue_list, &punt); - spin_unlock(&bs->rescue_lock); - - queue_work(bs->rescue_workqueue, &bs->rescue_work); -} - -/** - * bio_alloc_bioset - allocate a bio for I/O - * @gfp_mask: the GFP_ mask given to the slab allocator - * @nr_iovecs: number of iovecs to pre-allocate - * @bs: the bio_set to allocate from. - * - * Description: - * If @bs is NULL, uses kmalloc() to allocate the bio; else the allocation is - * backed by the @bs's mempool. - * - * When @bs is not NULL, if %__GFP_WAIT is set then bio_alloc will always be - * able to allocate a bio. This is due to the mempool guarantees. To make this - * work, callers must never allocate more than 1 bio at a time from this pool. - * Callers that need to allocate more than 1 bio must always submit the - * previously allocated bio for IO before attempting to allocate a new one. - * Failure to do so can cause deadlocks under memory pressure. - * - * Note that when running under generic_make_request() (i.e. any block - * driver), bios are not submitted until after you return - see the code in - * generic_make_request() that converts recursion into iteration, to prevent - * stack overflows. - * - * This would normally mean allocating multiple bios under - * generic_make_request() would be susceptible to deadlocks, but we have - * deadlock avoidance code that resubmits any blocked bios from a rescuer - * thread. - * - * However, we do not guarantee forward progress for allocations from other - * mempools. Doing multiple allocations from the same mempool under - * generic_make_request() should be avoided - instead, use bio_set's front_pad - * for per bio allocations. - * - * RETURNS: - * Pointer to new bio on success, NULL on failure. - */ -struct bio *bio_alloc_bioset(gfp_t gfp_mask, int nr_iovecs, struct bio_set *bs) -{ - gfp_t saved_gfp = gfp_mask; - unsigned front_pad; - unsigned inline_vecs; - unsigned long idx = BIO_POOL_NONE; - struct bio_vec *bvl = NULL; - struct bio *bio; - void *p; - - if (!bs) { - if (nr_iovecs > UIO_MAXIOV) - return NULL; - - p = kmalloc(sizeof(struct bio) + - nr_iovecs * sizeof(struct bio_vec), - gfp_mask); - front_pad = 0; - inline_vecs = nr_iovecs; - } else { - /* - * generic_make_request() converts recursion to iteration; this - * means if we're running beneath it, any bios we allocate and - * submit will not be submitted (and thus freed) until after we - * return. - * - * This exposes us to a potential deadlock if we allocate - * multiple bios from the same bio_set() while running - * underneath generic_make_request(). If we were to allocate - * multiple bios (say a stacking block driver that was splitting - * bios), we would deadlock if we exhausted the mempool's - * reserve. - * - * We solve this, and guarantee forward progress, with a rescuer - * workqueue per bio_set. If we go to allocate and there are - * bios on current->bio_list, we first try the allocation - * without __GFP_WAIT; if that fails, we punt those bios we - * would be blocking to the rescuer workqueue before we retry - * with the original gfp_flags. - */ - - if (current->bio_list && !bio_list_empty(current->bio_list)) - gfp_mask &= ~__GFP_WAIT; - - p = mempool_alloc(bs->bio_pool, gfp_mask); - if (!p && gfp_mask != saved_gfp) { - punt_bios_to_rescuer(bs); - gfp_mask = saved_gfp; - p = mempool_alloc(bs->bio_pool, gfp_mask); - } - - front_pad = bs->front_pad; - inline_vecs = BIO_INLINE_VECS; - } - - if (unlikely(!p)) - return NULL; - - bio = p + front_pad; - bio_init(bio); - - if (nr_iovecs > inline_vecs) { - bvl = bvec_alloc(gfp_mask, nr_iovecs, &idx, bs->bvec_pool); - if (!bvl && gfp_mask != saved_gfp) { - punt_bios_to_rescuer(bs); - gfp_mask = saved_gfp; - bvl = bvec_alloc(gfp_mask, nr_iovecs, &idx, bs->bvec_pool); - } - - if (unlikely(!bvl)) - goto err_free; - - bio->bi_flags |= 1 << BIO_OWNS_VEC; - } else if (nr_iovecs) { - bvl = bio->bi_inline_vecs; - } - - bio->bi_pool = bs; - bio->bi_flags |= idx << BIO_POOL_OFFSET; - bio->bi_max_vecs = nr_iovecs; - bio->bi_io_vec = bvl; - return bio; - -err_free: - mempool_free(p, bs->bio_pool); - return NULL; -} -EXPORT_SYMBOL(bio_alloc_bioset); - -void zero_fill_bio(struct bio *bio) -{ - unsigned long flags; - struct bio_vec bv; - struct bvec_iter iter; - - bio_for_each_segment(bv, bio, iter) { - char *data = bvec_kmap_irq(&bv, &flags); - memset(data, 0, bv.bv_len); - flush_dcache_page(bv.bv_page); - bvec_kunmap_irq(data, &flags); - } -} -EXPORT_SYMBOL(zero_fill_bio); - -/** - * bio_put - release a reference to a bio - * @bio: bio to release reference to - * - * Description: - * Put a reference to a &struct bio, either one you have gotten with - * bio_alloc, bio_get or bio_clone. The last put of a bio will free it. - **/ -void bio_put(struct bio *bio) -{ - BIO_BUG_ON(!atomic_read(&bio->bi_cnt)); - - /* - * last put frees it - */ - if (atomic_dec_and_test(&bio->bi_cnt)) - bio_free(bio); -} -EXPORT_SYMBOL(bio_put); - -inline int bio_phys_segments(struct request_queue *q, struct bio *bio) -{ - if (unlikely(!bio_flagged(bio, BIO_SEG_VALID))) - blk_recount_segments(q, bio); - - return bio->bi_phys_segments; -} -EXPORT_SYMBOL(bio_phys_segments); - -/** - * __bio_clone_fast - clone a bio that shares the original bio's biovec - * @bio: destination bio - * @bio_src: bio to clone - * - * Clone a &bio. Caller will own the returned bio, but not - * the actual data it points to. Reference count of returned - * bio will be one. - * - * Caller must ensure that @bio_src is not freed before @bio. - */ -void __bio_clone_fast(struct bio *bio, struct bio *bio_src) -{ - BUG_ON(bio->bi_pool && BIO_POOL_IDX(bio) != BIO_POOL_NONE); - - /* - * most users will be overriding ->bi_bdev with a new target, - * so we don't set nor calculate new physical/hw segment counts here - */ - bio->bi_bdev = bio_src->bi_bdev; - bio->bi_flags |= 1 << BIO_CLONED; - bio->bi_rw = bio_src->bi_rw; - bio->bi_iter = bio_src->bi_iter; - bio->bi_io_vec = bio_src->bi_io_vec; -} -EXPORT_SYMBOL(__bio_clone_fast); - -/** - * bio_clone_fast - clone a bio that shares the original bio's biovec - * @bio: bio to clone - * @gfp_mask: allocation priority - * @bs: bio_set to allocate from - * - * Like __bio_clone_fast, only also allocates the returned bio - */ -struct bio *bio_clone_fast(struct bio *bio, gfp_t gfp_mask, struct bio_set *bs) -{ - struct bio *b; - - b = bio_alloc_bioset(gfp_mask, 0, bs); - if (!b) - return NULL; - - __bio_clone_fast(b, bio); - - if (bio_integrity(bio)) { - int ret; - - ret = bio_integrity_clone(b, bio, gfp_mask); - - if (ret < 0) { - bio_put(b); - return NULL; - } - } - - return b; -} -EXPORT_SYMBOL(bio_clone_fast); - -/** - * bio_clone_bioset - clone a bio - * @bio_src: bio to clone - * @gfp_mask: allocation priority - * @bs: bio_set to allocate from - * - * Clone bio. Caller will own the returned bio, but not the actual data it - * points to. Reference count of returned bio will be one. - */ -struct bio *bio_clone_bioset(struct bio *bio_src, gfp_t gfp_mask, - struct bio_set *bs) -{ - struct bvec_iter iter; - struct bio_vec bv; - struct bio *bio; - - /* - * Pre immutable biovecs, __bio_clone() used to just do a memcpy from - * bio_src->bi_io_vec to bio->bi_io_vec. - * - * We can't do that anymore, because: - * - * - The point of cloning the biovec is to produce a bio with a biovec - * the caller can modify: bi_idx and bi_bvec_done should be 0. - * - * - The original bio could've had more than BIO_MAX_PAGES biovecs; if - * we tried to clone the whole thing bio_alloc_bioset() would fail. - * But the clone should succeed as long as the number of biovecs we - * actually need to allocate is fewer than BIO_MAX_PAGES. - * - * - Lastly, bi_vcnt should not be looked at or relied upon by code - * that does not own the bio - reason being drivers don't use it for - * iterating over the biovec anymore, so expecting it to be kept up - * to date (i.e. for clones that share the parent biovec) is just - * asking for trouble and would force extra work on - * __bio_clone_fast() anyways. - */ - - bio = bio_alloc_bioset(gfp_mask, bio_segments(bio_src), bs); - if (!bio) - return NULL; - - bio->bi_bdev = bio_src->bi_bdev; - bio->bi_rw = bio_src->bi_rw; - bio->bi_iter.bi_sector = bio_src->bi_iter.bi_sector; - bio->bi_iter.bi_size = bio_src->bi_iter.bi_size; - - if (bio->bi_rw & REQ_DISCARD) - goto integrity_clone; - - if (bio->bi_rw & REQ_WRITE_SAME) { - bio->bi_io_vec[bio->bi_vcnt++] = bio_src->bi_io_vec[0]; - goto integrity_clone; - } - - bio_for_each_segment(bv, bio_src, iter) - bio->bi_io_vec[bio->bi_vcnt++] = bv; - -integrity_clone: - if (bio_integrity(bio_src)) { - int ret; - - ret = bio_integrity_clone(bio, bio_src, gfp_mask); - if (ret < 0) { - bio_put(bio); - return NULL; - } - } - - return bio; -} -EXPORT_SYMBOL(bio_clone_bioset); - -/** - * bio_get_nr_vecs - return approx number of vecs - * @bdev: I/O target - * - * Return the approximate number of pages we can send to this target. - * There's no guarantee that you will be able to fit this number of pages - * into a bio, it does not account for dynamic restrictions that vary - * on offset. - */ -int bio_get_nr_vecs(struct block_device *bdev) -{ - struct request_queue *q = bdev_get_queue(bdev); - int nr_pages; - - nr_pages = min_t(unsigned, - queue_max_segments(q), - queue_max_sectors(q) / (PAGE_SIZE >> 9) + 1); - - return min_t(unsigned, nr_pages, BIO_MAX_PAGES); - -} -EXPORT_SYMBOL(bio_get_nr_vecs); - -static int __bio_add_page(struct request_queue *q, struct bio *bio, struct page - *page, unsigned int len, unsigned int offset, - unsigned int max_sectors) -{ - int retried_segments = 0; - struct bio_vec *bvec; - - /* - * cloned bio must not modify vec list - */ - if (unlikely(bio_flagged(bio, BIO_CLONED))) - return 0; - - if (((bio->bi_iter.bi_size + len) >> 9) > max_sectors) - return 0; - - /* - * For filesystems with a blocksize smaller than the pagesize - * we will often be called with the same page as last time and - * a consecutive offset. Optimize this special case. - */ - if (bio->bi_vcnt > 0) { - struct bio_vec *prev = &bio->bi_io_vec[bio->bi_vcnt - 1]; - - if (page == prev->bv_page && - offset == prev->bv_offset + prev->bv_len) { - unsigned int prev_bv_len = prev->bv_len; - prev->bv_len += len; - - if (q->merge_bvec_fn) { - struct bvec_merge_data bvm = { - /* prev_bvec is already charged in - bi_size, discharge it in order to - simulate merging updated prev_bvec - as new bvec. */ - .bi_bdev = bio->bi_bdev, - .bi_sector = bio->bi_iter.bi_sector, - .bi_size = bio->bi_iter.bi_size - - prev_bv_len, - .bi_rw = bio->bi_rw, - }; - - if (q->merge_bvec_fn(q, &bvm, prev) < prev->bv_len) { - prev->bv_len -= len; - return 0; - } - } - - goto done; - } - } - - if (bio->bi_vcnt >= bio->bi_max_vecs) - return 0; - - /* - * we might lose a segment or two here, but rather that than - * make this too complex. - */ - - while (bio->bi_phys_segments >= queue_max_segments(q)) { - - if (retried_segments) - return 0; - - retried_segments = 1; - blk_recount_segments(q, bio); - } - - /* - * setup the new entry, we might clear it again later if we - * cannot add the page - */ - bvec = &bio->bi_io_vec[bio->bi_vcnt]; - bvec->bv_page = page; - bvec->bv_len = len; - bvec->bv_offset = offset; - - /* - * if queue has other restrictions (eg varying max sector size - * depending on offset), it can specify a merge_bvec_fn in the - * queue to get further control - */ - if (q->merge_bvec_fn) { - struct bvec_merge_data bvm = { - .bi_bdev = bio->bi_bdev, - .bi_sector = bio->bi_iter.bi_sector, - .bi_size = bio->bi_iter.bi_size, - .bi_rw = bio->bi_rw, - }; - - /* - * merge_bvec_fn() returns number of bytes it can accept - * at this offset - */ - if (q->merge_bvec_fn(q, &bvm, bvec) < bvec->bv_len) { - bvec->bv_page = NULL; - bvec->bv_len = 0; - bvec->bv_offset = 0; - return 0; - } - } - - /* If we may be able to merge these biovecs, force a recount */ - if (bio->bi_vcnt && (BIOVEC_PHYS_MERGEABLE(bvec-1, bvec))) - bio->bi_flags &= ~(1 << BIO_SEG_VALID); - - bio->bi_vcnt++; - bio->bi_phys_segments++; - done: - bio->bi_iter.bi_size += len; - return len; -} - -/** - * bio_add_pc_page - attempt to add page to bio - * @q: the target queue - * @bio: destination bio - * @page: page to add - * @len: vec entry length - * @offset: vec entry offset - * - * Attempt to add a page to the bio_vec maplist. This can fail for a - * number of reasons, such as the bio being full or target block device - * limitations. The target block device must allow bio's up to PAGE_SIZE, - * so it is always possible to add a single page to an empty bio. - * - * This should only be used by REQ_PC bios. - */ -int bio_add_pc_page(struct request_queue *q, struct bio *bio, struct page *page, - unsigned int len, unsigned int offset) -{ - return __bio_add_page(q, bio, page, len, offset, - queue_max_hw_sectors(q)); -} -EXPORT_SYMBOL(bio_add_pc_page); - -/** - * bio_add_page - attempt to add page to bio - * @bio: destination bio - * @page: page to add - * @len: vec entry length - * @offset: vec entry offset - * - * Attempt to add a page to the bio_vec maplist. This can fail for a - * number of reasons, such as the bio being full or target block device - * limitations. The target block device must allow bio's up to PAGE_SIZE, - * so it is always possible to add a single page to an empty bio. - */ -int bio_add_page(struct bio *bio, struct page *page, unsigned int len, - unsigned int offset) -{ - struct request_queue *q = bdev_get_queue(bio->bi_bdev); - return __bio_add_page(q, bio, page, len, offset, queue_max_sectors(q)); -} -EXPORT_SYMBOL(bio_add_page); - -struct submit_bio_ret { - struct completion event; - int error; -}; - -static void submit_bio_wait_endio(struct bio *bio, int error) -{ - struct submit_bio_ret *ret = bio->bi_private; - - ret->error = error; - complete(&ret->event); -} - -/** - * submit_bio_wait - submit a bio, and wait until it completes - * @rw: whether to %READ or %WRITE, or maybe to %READA (read ahead) - * @bio: The &struct bio which describes the I/O - * - * Simple wrapper around submit_bio(). Returns 0 on success, or the error from - * bio_endio() on failure. - */ -int submit_bio_wait(int rw, struct bio *bio) -{ - struct submit_bio_ret ret; - - rw |= REQ_SYNC; - init_completion(&ret.event); - bio->bi_private = &ret; - bio->bi_end_io = submit_bio_wait_endio; - submit_bio(rw, bio); - wait_for_completion(&ret.event); - - return ret.error; -} -EXPORT_SYMBOL(submit_bio_wait); - -/** - * bio_advance - increment/complete a bio by some number of bytes - * @bio: bio to advance - * @bytes: number of bytes to complete - * - * This updates bi_sector, bi_size and bi_idx; if the number of bytes to - * complete doesn't align with a bvec boundary, then bv_len and bv_offset will - * be updated on the last bvec as well. - * - * @bio will then represent the remaining, uncompleted portion of the io. - */ -void bio_advance(struct bio *bio, unsigned bytes) -{ - if (bio_integrity(bio)) - bio_integrity_advance(bio, bytes); - - bio_advance_iter(bio, &bio->bi_iter, bytes); -} -EXPORT_SYMBOL(bio_advance); - -/** - * bio_alloc_pages - allocates a single page for each bvec in a bio - * @bio: bio to allocate pages for - * @gfp_mask: flags for allocation - * - * Allocates pages up to @bio->bi_vcnt. - * - * Returns 0 on success, -ENOMEM on failure. On failure, any allocated pages are - * freed. - */ -int bio_alloc_pages(struct bio *bio, gfp_t gfp_mask) -{ - int i; - struct bio_vec *bv; - - bio_for_each_segment_all(bv, bio, i) { - bv->bv_page = alloc_page(gfp_mask); - if (!bv->bv_page) { - while (--bv >= bio->bi_io_vec) - __free_page(bv->bv_page); - return -ENOMEM; - } - } - - return 0; -} -EXPORT_SYMBOL(bio_alloc_pages); - -/** - * bio_copy_data - copy contents of data buffers from one chain of bios to - * another - * @src: source bio list - * @dst: destination bio list - * - * If @src and @dst are single bios, bi_next must be NULL - otherwise, treats - * @src and @dst as linked lists of bios. - * - * Stops when it reaches the end of either @src or @dst - that is, copies - * min(src->bi_size, dst->bi_size) bytes (or the equivalent for lists of bios). - */ -void bio_copy_data(struct bio *dst, struct bio *src) -{ - struct bvec_iter src_iter, dst_iter; - struct bio_vec src_bv, dst_bv; - void *src_p, *dst_p; - unsigned bytes; - - src_iter = src->bi_iter; - dst_iter = dst->bi_iter; - - while (1) { - if (!src_iter.bi_size) { - src = src->bi_next; - if (!src) - break; - - src_iter = src->bi_iter; - } - - if (!dst_iter.bi_size) { - dst = dst->bi_next; - if (!dst) - break; - - dst_iter = dst->bi_iter; - } - - src_bv = bio_iter_iovec(src, src_iter); - dst_bv = bio_iter_iovec(dst, dst_iter); - - bytes = min(src_bv.bv_len, dst_bv.bv_len); - - src_p = kmap_atomic(src_bv.bv_page); - dst_p = kmap_atomic(dst_bv.bv_page); - - memcpy(dst_p + dst_bv.bv_offset, - src_p + src_bv.bv_offset, - bytes); - - kunmap_atomic(dst_p); - kunmap_atomic(src_p); - - bio_advance_iter(src, &src_iter, bytes); - bio_advance_iter(dst, &dst_iter, bytes); - } -} -EXPORT_SYMBOL(bio_copy_data); - -struct bio_map_data { - int nr_sgvecs; - int is_our_pages; - struct sg_iovec sgvecs[]; -}; - -static void bio_set_map_data(struct bio_map_data *bmd, struct bio *bio, - const struct sg_iovec *iov, int iov_count, - int is_our_pages) -{ - memcpy(bmd->sgvecs, iov, sizeof(struct sg_iovec) * iov_count); - bmd->nr_sgvecs = iov_count; - bmd->is_our_pages = is_our_pages; - bio->bi_private = bmd; -} - -static struct bio_map_data *bio_alloc_map_data(int nr_segs, - unsigned int iov_count, - gfp_t gfp_mask) -{ - if (iov_count > UIO_MAXIOV) - return NULL; - - return kmalloc(sizeof(struct bio_map_data) + - sizeof(struct sg_iovec) * iov_count, gfp_mask); -} - -static int __bio_copy_iov(struct bio *bio, const struct sg_iovec *iov, int iov_count, - int to_user, int from_user, int do_free_page) -{ - int ret = 0, i; - struct bio_vec *bvec; - int iov_idx = 0; - unsigned int iov_off = 0; - - bio_for_each_segment_all(bvec, bio, i) { - char *bv_addr = page_address(bvec->bv_page); - unsigned int bv_len = bvec->bv_len; - - while (bv_len && iov_idx < iov_count) { - unsigned int bytes; - char __user *iov_addr; - - bytes = min_t(unsigned int, - iov[iov_idx].iov_len - iov_off, bv_len); - iov_addr = iov[iov_idx].iov_base + iov_off; - - if (!ret) { - if (to_user) - ret = copy_to_user(iov_addr, bv_addr, - bytes); - - if (from_user) - ret = copy_from_user(bv_addr, iov_addr, - bytes); - - if (ret) - ret = -EFAULT; - } - - bv_len -= bytes; - bv_addr += bytes; - iov_addr += bytes; - iov_off += bytes; - - if (iov[iov_idx].iov_len == iov_off) { - iov_idx++; - iov_off = 0; - } - } - - if (do_free_page) - __free_page(bvec->bv_page); - } - - return ret; -} - -/** - * bio_uncopy_user - finish previously mapped bio - * @bio: bio being terminated - * - * Free pages allocated from bio_copy_user() and write back data - * to user space in case of a read. - */ -int bio_uncopy_user(struct bio *bio) -{ - struct bio_map_data *bmd = bio->bi_private; - struct bio_vec *bvec; - int ret = 0, i; - - if (!bio_flagged(bio, BIO_NULL_MAPPED)) { - /* - * if we're in a workqueue, the request is orphaned, so - * don't copy into a random user address space, just free. - */ - if (current->mm) - ret = __bio_copy_iov(bio, bmd->sgvecs, bmd->nr_sgvecs, - bio_data_dir(bio) == READ, - 0, bmd->is_our_pages); - else if (bmd->is_our_pages) - bio_for_each_segment_all(bvec, bio, i) - __free_page(bvec->bv_page); - } - kfree(bmd); - bio_put(bio); - return ret; -} -EXPORT_SYMBOL(bio_uncopy_user); - -/** - * bio_copy_user_iov - copy user data to bio - * @q: destination block queue - * @map_data: pointer to the rq_map_data holding pages (if necessary) - * @iov: the iovec. - * @iov_count: number of elements in the iovec - * @write_to_vm: bool indicating writing to pages or not - * @gfp_mask: memory allocation flags - * - * Prepares and returns a bio for indirect user io, bouncing data - * to/from kernel pages as necessary. Must be paired with - * call bio_uncopy_user() on io completion. - */ -struct bio *bio_copy_user_iov(struct request_queue *q, - struct rq_map_data *map_data, - const struct sg_iovec *iov, int iov_count, - int write_to_vm, gfp_t gfp_mask) -{ - struct bio_map_data *bmd; - struct bio_vec *bvec; - struct page *page; - struct bio *bio; - int i, ret; - int nr_pages = 0; - unsigned int len = 0; - unsigned int offset = map_data ? map_data->offset & ~PAGE_MASK : 0; - - for (i = 0; i < iov_count; i++) { - unsigned long uaddr; - unsigned long end; - unsigned long start; - - uaddr = (unsigned long)iov[i].iov_base; - end = (uaddr + iov[i].iov_len + PAGE_SIZE - 1) >> PAGE_SHIFT; - start = uaddr >> PAGE_SHIFT; - - /* - * Overflow, abort - */ - if (end < start) - return ERR_PTR(-EINVAL); - - nr_pages += end - start; - len += iov[i].iov_len; - } - - if (offset) - nr_pages++; - - bmd = bio_alloc_map_data(nr_pages, iov_count, gfp_mask); - if (!bmd) - return ERR_PTR(-ENOMEM); - - ret = -ENOMEM; - bio = bio_kmalloc(gfp_mask, nr_pages); - if (!bio) - goto out_bmd; - - if (!write_to_vm) - bio->bi_rw |= REQ_WRITE; - - ret = 0; - - if (map_data) { - nr_pages = 1 << map_data->page_order; - i = map_data->offset / PAGE_SIZE; - } - while (len) { - unsigned int bytes = PAGE_SIZE; - - bytes -= offset; - - if (bytes > len) - bytes = len; - - if (map_data) { - if (i == map_data->nr_entries * nr_pages) { - ret = -ENOMEM; - break; - } - - page = map_data->pages[i / nr_pages]; - page += (i % nr_pages); - - i++; - } else { - page = alloc_page(q->bounce_gfp | gfp_mask); - if (!page) { - ret = -ENOMEM; - break; - } - } - - if (bio_add_pc_page(q, bio, page, bytes, offset) < bytes) - break; - - len -= bytes; - offset = 0; - } - - if (ret) - goto cleanup; - - /* - * success - */ - if ((!write_to_vm && (!map_data || !map_data->null_mapped)) || - (map_data && map_data->from_user)) { - ret = __bio_copy_iov(bio, iov, iov_count, 0, 1, 0); - if (ret) - goto cleanup; - } - - bio_set_map_data(bmd, bio, iov, iov_count, map_data ? 0 : 1); - return bio; -cleanup: - if (!map_data) - bio_for_each_segment_all(bvec, bio, i) - __free_page(bvec->bv_page); - - bio_put(bio); -out_bmd: - kfree(bmd); - return ERR_PTR(ret); -} - -/** - * bio_copy_user - copy user data to bio - * @q: destination block queue - * @map_data: pointer to the rq_map_data holding pages (if necessary) - * @uaddr: start of user address - * @len: length in bytes - * @write_to_vm: bool indicating writing to pages or not - * @gfp_mask: memory allocation flags - * - * Prepares and returns a bio for indirect user io, bouncing data - * to/from kernel pages as necessary. Must be paired with - * call bio_uncopy_user() on io completion. - */ -struct bio *bio_copy_user(struct request_queue *q, struct rq_map_data *map_data, - unsigned long uaddr, unsigned int len, - int write_to_vm, gfp_t gfp_mask) -{ - struct sg_iovec iov; - - iov.iov_base = (void __user *)uaddr; - iov.iov_len = len; - - return bio_copy_user_iov(q, map_data, &iov, 1, write_to_vm, gfp_mask); -} -EXPORT_SYMBOL(bio_copy_user); - -static struct bio *__bio_map_user_iov(struct request_queue *q, - struct block_device *bdev, - const struct sg_iovec *iov, int iov_count, - int write_to_vm, gfp_t gfp_mask) -{ - int i, j; - int nr_pages = 0; - struct page **pages; - struct bio *bio; - int cur_page = 0; - int ret, offset; - - for (i = 0; i < iov_count; i++) { - unsigned long uaddr = (unsigned long)iov[i].iov_base; - unsigned long len = iov[i].iov_len; - unsigned long end = (uaddr + len + PAGE_SIZE - 1) >> PAGE_SHIFT; - unsigned long start = uaddr >> PAGE_SHIFT; - - /* - * Overflow, abort - */ - if (end < start) - return ERR_PTR(-EINVAL); - - nr_pages += end - start; - /* - * buffer must be aligned to at least hardsector size for now - */ - if (uaddr & queue_dma_alignment(q)) - return ERR_PTR(-EINVAL); - } - - if (!nr_pages) - return ERR_PTR(-EINVAL); - - bio = bio_kmalloc(gfp_mask, nr_pages); - if (!bio) - return ERR_PTR(-ENOMEM); - - ret = -ENOMEM; - pages = kcalloc(nr_pages, sizeof(struct page *), gfp_mask); - if (!pages) - goto out; - - for (i = 0; i < iov_count; i++) { - unsigned long uaddr = (unsigned long)iov[i].iov_base; - unsigned long len = iov[i].iov_len; - unsigned long end = (uaddr + len + PAGE_SIZE - 1) >> PAGE_SHIFT; - unsigned long start = uaddr >> PAGE_SHIFT; - const int local_nr_pages = end - start; - const int page_limit = cur_page + local_nr_pages; - - ret = get_user_pages_fast(uaddr, local_nr_pages, - write_to_vm, &pages[cur_page]); - if (ret < local_nr_pages) { - ret = -EFAULT; - goto out_unmap; - } - - offset = uaddr & ~PAGE_MASK; - for (j = cur_page; j < page_limit; j++) { - unsigned int bytes = PAGE_SIZE - offset; - - if (len <= 0) - break; - - if (bytes > len) - bytes = len; - - /* - * sorry... - */ - if (bio_add_pc_page(q, bio, pages[j], bytes, offset) < - bytes) - break; - - len -= bytes; - offset = 0; - } - - cur_page = j; - /* - * release the pages we didn't map into the bio, if any - */ - while (j < page_limit) - page_cache_release(pages[j++]); - } - - kfree(pages); - - /* - * set data direction, and check if mapped pages need bouncing - */ - if (!write_to_vm) - bio->bi_rw |= REQ_WRITE; - - bio->bi_bdev = bdev; - bio->bi_flags |= (1 << BIO_USER_MAPPED); - return bio; - - out_unmap: - for (i = 0; i < nr_pages; i++) { - if(!pages[i]) - break; - page_cache_release(pages[i]); - } - out: - kfree(pages); - bio_put(bio); - return ERR_PTR(ret); -} - -/** - * bio_map_user - map user address into bio - * @q: the struct request_queue for the bio - * @bdev: destination block device - * @uaddr: start of user address - * @len: length in bytes - * @write_to_vm: bool indicating writing to pages or not - * @gfp_mask: memory allocation flags - * - * Map the user space address into a bio suitable for io to a block - * device. Returns an error pointer in case of error. - */ -struct bio *bio_map_user(struct request_queue *q, struct block_device *bdev, - unsigned long uaddr, unsigned int len, int write_to_vm, - gfp_t gfp_mask) -{ - struct sg_iovec iov; - - iov.iov_base = (void __user *)uaddr; - iov.iov_len = len; - - return bio_map_user_iov(q, bdev, &iov, 1, write_to_vm, gfp_mask); -} -EXPORT_SYMBOL(bio_map_user); - -/** - * bio_map_user_iov - map user sg_iovec table into bio - * @q: the struct request_queue for the bio - * @bdev: destination block device - * @iov: the iovec. - * @iov_count: number of elements in the iovec - * @write_to_vm: bool indicating writing to pages or not - * @gfp_mask: memory allocation flags - * - * Map the user space address into a bio suitable for io to a block - * device. Returns an error pointer in case of error. - */ -struct bio *bio_map_user_iov(struct request_queue *q, struct block_device *bdev, - const struct sg_iovec *iov, int iov_count, - int write_to_vm, gfp_t gfp_mask) -{ - struct bio *bio; - - bio = __bio_map_user_iov(q, bdev, iov, iov_count, write_to_vm, - gfp_mask); - if (IS_ERR(bio)) - return bio; - - /* - * subtle -- if __bio_map_user() ended up bouncing a bio, - * it would normally disappear when its bi_end_io is run. - * however, we need it for the unmap, so grab an extra - * reference to it - */ - bio_get(bio); - - return bio; -} - -static void __bio_unmap_user(struct bio *bio) -{ - struct bio_vec *bvec; - int i; - - /* - * make sure we dirty pages we wrote to - */ - bio_for_each_segment_all(bvec, bio, i) { - if (bio_data_dir(bio) == READ) - set_page_dirty_lock(bvec->bv_page); - - page_cache_release(bvec->bv_page); - } - - bio_put(bio); -} - -/** - * bio_unmap_user - unmap a bio - * @bio: the bio being unmapped - * - * Unmap a bio previously mapped by bio_map_user(). Must be called with - * a process context. - * - * bio_unmap_user() may sleep. - */ -void bio_unmap_user(struct bio *bio) -{ - __bio_unmap_user(bio); - bio_put(bio); -} -EXPORT_SYMBOL(bio_unmap_user); - -static void bio_map_kern_endio(struct bio *bio, int err) -{ - bio_put(bio); -} - -static struct bio *__bio_map_kern(struct request_queue *q, void *data, - unsigned int len, gfp_t gfp_mask) -{ - unsigned long kaddr = (unsigned long)data; - unsigned long end = (kaddr + len + PAGE_SIZE - 1) >> PAGE_SHIFT; - unsigned long start = kaddr >> PAGE_SHIFT; - const int nr_pages = end - start; - int offset, i; - struct bio *bio; - - bio = bio_kmalloc(gfp_mask, nr_pages); - if (!bio) - return ERR_PTR(-ENOMEM); - - offset = offset_in_page(kaddr); - for (i = 0; i < nr_pages; i++) { - unsigned int bytes = PAGE_SIZE - offset; - - if (len <= 0) - break; - - if (bytes > len) - bytes = len; - - if (bio_add_pc_page(q, bio, virt_to_page(data), bytes, - offset) < bytes) - break; - - data += bytes; - len -= bytes; - offset = 0; - } - - bio->bi_end_io = bio_map_kern_endio; - return bio; -} - -/** - * bio_map_kern - map kernel address into bio - * @q: the struct request_queue for the bio - * @data: pointer to buffer to map - * @len: length in bytes - * @gfp_mask: allocation flags for bio allocation - * - * Map the kernel address into a bio suitable for io to a block - * device. Returns an error pointer in case of error. - */ -struct bio *bio_map_kern(struct request_queue *q, void *data, unsigned int len, - gfp_t gfp_mask) -{ - struct bio *bio; - - bio = __bio_map_kern(q, data, len, gfp_mask); - if (IS_ERR(bio)) - return bio; - - if (bio->bi_iter.bi_size == len) - return bio; - - /* - * Don't support partial mappings. - */ - bio_put(bio); - return ERR_PTR(-EINVAL); -} -EXPORT_SYMBOL(bio_map_kern); - -static void bio_copy_kern_endio(struct bio *bio, int err) -{ - struct bio_vec *bvec; - const int read = bio_data_dir(bio) == READ; - struct bio_map_data *bmd = bio->bi_private; - int i; - char *p = bmd->sgvecs[0].iov_base; - - bio_for_each_segment_all(bvec, bio, i) { - char *addr = page_address(bvec->bv_page); - - if (read) - memcpy(p, addr, bvec->bv_len); - - __free_page(bvec->bv_page); - p += bvec->bv_len; - } - - kfree(bmd); - bio_put(bio); -} - -/** - * bio_copy_kern - copy kernel address into bio - * @q: the struct request_queue for the bio - * @data: pointer to buffer to copy - * @len: length in bytes - * @gfp_mask: allocation flags for bio and page allocation - * @reading: data direction is READ - * - * copy the kernel address into a bio suitable for io to a block - * device. Returns an error pointer in case of error. - */ -struct bio *bio_copy_kern(struct request_queue *q, void *data, unsigned int len, - gfp_t gfp_mask, int reading) -{ - struct bio *bio; - struct bio_vec *bvec; - int i; - - bio = bio_copy_user(q, NULL, (unsigned long)data, len, 1, gfp_mask); - if (IS_ERR(bio)) - return bio; - - if (!reading) { - void *p = data; - - bio_for_each_segment_all(bvec, bio, i) { - char *addr = page_address(bvec->bv_page); - - memcpy(addr, p, bvec->bv_len); - p += bvec->bv_len; - } - } - - bio->bi_end_io = bio_copy_kern_endio; - - return bio; -} -EXPORT_SYMBOL(bio_copy_kern); - -/* - * bio_set_pages_dirty() and bio_check_pages_dirty() are support functions - * for performing direct-IO in BIOs. - * - * The problem is that we cannot run set_page_dirty() from interrupt context - * because the required locks are not interrupt-safe. So what we can do is to - * mark the pages dirty _before_ performing IO. And in interrupt context, - * check that the pages are still dirty. If so, fine. If not, redirty them - * in process context. - * - * We special-case compound pages here: normally this means reads into hugetlb - * pages. The logic in here doesn't really work right for compound pages - * because the VM does not uniformly chase down the head page in all cases. - * But dirtiness of compound pages is pretty meaningless anyway: the VM doesn't - * handle them at all. So we skip compound pages here at an early stage. - * - * Note that this code is very hard to test under normal circumstances because - * direct-io pins the pages with get_user_pages(). This makes - * is_page_cache_freeable return false, and the VM will not clean the pages. - * But other code (eg, flusher threads) could clean the pages if they are mapped - * pagecache. - * - * Simply disabling the call to bio_set_pages_dirty() is a good way to test the - * deferred bio dirtying paths. - */ - -/* - * bio_set_pages_dirty() will mark all the bio's pages as dirty. - */ -void bio_set_pages_dirty(struct bio *bio) -{ - struct bio_vec *bvec; - int i; - - bio_for_each_segment_all(bvec, bio, i) { - struct page *page = bvec->bv_page; - - if (page && !PageCompound(page)) - set_page_dirty_lock(page); - } -} - -static void bio_release_pages(struct bio *bio) -{ - struct bio_vec *bvec; - int i; - - bio_for_each_segment_all(bvec, bio, i) { - struct page *page = bvec->bv_page; - - if (page) - put_page(page); - } -} - -/* - * bio_check_pages_dirty() will check that all the BIO's pages are still dirty. - * If they are, then fine. If, however, some pages are clean then they must - * have been written out during the direct-IO read. So we take another ref on - * the BIO and the offending pages and re-dirty the pages in process context. - * - * It is expected that bio_check_pages_dirty() will wholly own the BIO from - * here on. It will run one page_cache_release() against each page and will - * run one bio_put() against the BIO. - */ - -static void bio_dirty_fn(struct work_struct *work); - -static DECLARE_WORK(bio_dirty_work, bio_dirty_fn); -static DEFINE_SPINLOCK(bio_dirty_lock); -static struct bio *bio_dirty_list; - -/* - * This runs in process context - */ -static void bio_dirty_fn(struct work_struct *work) -{ - unsigned long flags; - struct bio *bio; - - spin_lock_irqsave(&bio_dirty_lock, flags); - bio = bio_dirty_list; - bio_dirty_list = NULL; - spin_unlock_irqrestore(&bio_dirty_lock, flags); - - while (bio) { - struct bio *next = bio->bi_private; - - bio_set_pages_dirty(bio); - bio_release_pages(bio); - bio_put(bio); - bio = next; - } -} - -void bio_check_pages_dirty(struct bio *bio) -{ - struct bio_vec *bvec; - int nr_clean_pages = 0; - int i; - - bio_for_each_segment_all(bvec, bio, i) { - struct page *page = bvec->bv_page; - - if (PageDirty(page) || PageCompound(page)) { - page_cache_release(page); - bvec->bv_page = NULL; - } else { - nr_clean_pages++; - } - } - - if (nr_clean_pages) { - unsigned long flags; - - spin_lock_irqsave(&bio_dirty_lock, flags); - bio->bi_private = bio_dirty_list; - bio_dirty_list = bio; - spin_unlock_irqrestore(&bio_dirty_lock, flags); - schedule_work(&bio_dirty_work); - } else { - bio_put(bio); - } -} - -#if ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE -void bio_flush_dcache_pages(struct bio *bi) -{ - struct bio_vec bvec; - struct bvec_iter iter; - - bio_for_each_segment(bvec, bi, iter) - flush_dcache_page(bvec.bv_page); -} -EXPORT_SYMBOL(bio_flush_dcache_pages); -#endif - -/** - * bio_endio - end I/O on a bio - * @bio: bio - * @error: error, if any - * - * Description: - * bio_endio() will end I/O on the whole bio. bio_endio() is the - * preferred way to end I/O on a bio, it takes care of clearing - * BIO_UPTODATE on error. @error is 0 on success, and and one of the - * established -Exxxx (-EIO, for instance) error values in case - * something went wrong. No one should call bi_end_io() directly on a - * bio unless they own it and thus know that it has an end_io - * function. - **/ -void bio_endio(struct bio *bio, int error) -{ - while (bio) { - BUG_ON(atomic_read(&bio->bi_remaining) <= 0); - - if (error) - clear_bit(BIO_UPTODATE, &bio->bi_flags); - else if (!test_bit(BIO_UPTODATE, &bio->bi_flags)) - error = -EIO; - - if (!atomic_dec_and_test(&bio->bi_remaining)) - return; - - /* - * Need to have a real endio function for chained bios, - * otherwise various corner cases will break (like stacking - * block devices that save/restore bi_end_io) - however, we want - * to avoid unbounded recursion and blowing the stack. Tail call - * optimization would handle this, but compiling with frame - * pointers also disables gcc's sibling call optimization. - */ - if (bio->bi_end_io == bio_chain_endio) { - struct bio *parent = bio->bi_private; - bio_put(bio); - bio = parent; - } else { - if (bio->bi_end_io) - bio->bi_end_io(bio, error); - bio = NULL; - } - } -} -EXPORT_SYMBOL(bio_endio); - -/** - * bio_endio_nodec - end I/O on a bio, without decrementing bi_remaining - * @bio: bio - * @error: error, if any - * - * For code that has saved and restored bi_end_io; thing hard before using this - * function, probably you should've cloned the entire bio. - **/ -void bio_endio_nodec(struct bio *bio, int error) -{ - atomic_inc(&bio->bi_remaining); - bio_endio(bio, error); -} -EXPORT_SYMBOL(bio_endio_nodec); - -/** - * bio_split - split a bio - * @bio: bio to split - * @sectors: number of sectors to split from the front of @bio - * @gfp: gfp mask - * @bs: bio set to allocate from - * - * Allocates and returns a new bio which represents @sectors from the start of - * @bio, and updates @bio to represent the remaining sectors. - * - * The newly allocated bio will point to @bio's bi_io_vec; it is the caller's - * responsibility to ensure that @bio is not freed before the split. - */ -struct bio *bio_split(struct bio *bio, int sectors, - gfp_t gfp, struct bio_set *bs) -{ - struct bio *split = NULL; - - BUG_ON(sectors <= 0); - BUG_ON(sectors >= bio_sectors(bio)); - - split = bio_clone_fast(bio, gfp, bs); - if (!split) - return NULL; - - split->bi_iter.bi_size = sectors << 9; - - if (bio_integrity(split)) - bio_integrity_trim(split, 0, sectors); - - bio_advance(bio, split->bi_iter.bi_size); - - return split; -} -EXPORT_SYMBOL(bio_split); - -/** - * bio_trim - trim a bio - * @bio: bio to trim - * @offset: number of sectors to trim from the front of @bio - * @size: size we want to trim @bio to, in sectors - */ -void bio_trim(struct bio *bio, int offset, int size) -{ - /* 'bio' is a cloned bio which we need to trim to match - * the given offset and size. - */ - - size <<= 9; - if (offset == 0 && size == bio->bi_iter.bi_size) - return; - - clear_bit(BIO_SEG_VALID, &bio->bi_flags); - - bio_advance(bio, offset << 9); - - bio->bi_iter.bi_size = size; -} -EXPORT_SYMBOL_GPL(bio_trim); - -/* - * create memory pools for biovec's in a bio_set. - * use the global biovec slabs created for general use. - */ -mempool_t *biovec_create_pool(struct bio_set *bs, int pool_entries) -{ - struct biovec_slab *bp = bvec_slabs + BIOVEC_MAX_IDX; - - return mempool_create_slab_pool(pool_entries, bp->slab); -} - -void bioset_free(struct bio_set *bs) -{ - if (bs->rescue_workqueue) - destroy_workqueue(bs->rescue_workqueue); - - if (bs->bio_pool) - mempool_destroy(bs->bio_pool); - - if (bs->bvec_pool) - mempool_destroy(bs->bvec_pool); - - bioset_integrity_free(bs); - bio_put_slab(bs); - - kfree(bs); -} -EXPORT_SYMBOL(bioset_free); - -/** - * bioset_create - Create a bio_set - * @pool_size: Number of bio and bio_vecs to cache in the mempool - * @front_pad: Number of bytes to allocate in front of the returned bio - * - * Description: - * Set up a bio_set to be used with @bio_alloc_bioset. Allows the caller - * to ask for a number of bytes to be allocated in front of the bio. - * Front pad allocation is useful for embedding the bio inside - * another structure, to avoid allocating extra data to go with the bio. - * Note that the bio must be embedded at the END of that structure always, - * or things will break badly. - */ -struct bio_set *bioset_create(unsigned int pool_size, unsigned int front_pad) -{ - unsigned int back_pad = BIO_INLINE_VECS * sizeof(struct bio_vec); - struct bio_set *bs; - - bs = kzalloc(sizeof(*bs), GFP_KERNEL); - if (!bs) - return NULL; - - bs->front_pad = front_pad; - - spin_lock_init(&bs->rescue_lock); - bio_list_init(&bs->rescue_list); - INIT_WORK(&bs->rescue_work, bio_alloc_rescue); - - bs->bio_slab = bio_find_or_create_slab(front_pad + back_pad); - if (!bs->bio_slab) { - kfree(bs); - return NULL; - } - - bs->bio_pool = mempool_create_slab_pool(pool_size, bs->bio_slab); - if (!bs->bio_pool) - goto bad; - - bs->bvec_pool = biovec_create_pool(bs, pool_size); - if (!bs->bvec_pool) - goto bad; - - bs->rescue_workqueue = alloc_workqueue("bioset", WQ_MEM_RECLAIM, 0); - if (!bs->rescue_workqueue) - goto bad; - - return bs; -bad: - bioset_free(bs); - return NULL; -} -EXPORT_SYMBOL(bioset_create); - -#ifdef CONFIG_BLK_CGROUP -/** - * bio_associate_current - associate a bio with %current - * @bio: target bio - * - * Associate @bio with %current if it hasn't been associated yet. Block - * layer will treat @bio as if it were issued by %current no matter which - * task actually issues it. - * - * This function takes an extra reference of @task's io_context and blkcg - * which will be put when @bio is released. The caller must own @bio, - * ensure %current->io_context exists, and is responsible for synchronizing - * calls to this function. - */ -int bio_associate_current(struct bio *bio) -{ - struct io_context *ioc; - struct cgroup_subsys_state *css; - - if (bio->bi_ioc) - return -EBUSY; - - ioc = current->io_context; - if (!ioc) - return -ENOENT; - - /* acquire active ref on @ioc and associate */ - get_io_context_active(ioc); - bio->bi_ioc = ioc; - - /* associate blkcg if exists */ - rcu_read_lock(); - css = task_css(current, blkio_cgrp_id); - if (css && css_tryget(css)) - bio->bi_css = css; - rcu_read_unlock(); - - return 0; -} - -/** - * bio_disassociate_task - undo bio_associate_current() - * @bio: target bio - */ -void bio_disassociate_task(struct bio *bio) -{ - if (bio->bi_ioc) { - put_io_context(bio->bi_ioc); - bio->bi_ioc = NULL; - } - if (bio->bi_css) { - css_put(bio->bi_css); - bio->bi_css = NULL; - } -} - -#endif /* CONFIG_BLK_CGROUP */ - -static void __init biovec_init_slabs(void) -{ - int i; - - for (i = 0; i < BIOVEC_NR_POOLS; i++) { - int size; - struct biovec_slab *bvs = bvec_slabs + i; - - if (bvs->nr_vecs <= BIO_INLINE_VECS) { - bvs->slab = NULL; - continue; - } - - size = bvs->nr_vecs * sizeof(struct bio_vec); - bvs->slab = kmem_cache_create(bvs->name, size, 0, - SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL); - } -} - -static int __init init_bio(void) -{ - bio_slab_max = 2; - bio_slab_nr = 0; - bio_slabs = kzalloc(bio_slab_max * sizeof(struct bio_slab), GFP_KERNEL); - if (!bio_slabs) - panic("bio: can't allocate bios\n"); - - bio_integrity_init(); - biovec_init_slabs(); - - fs_bio_set = bioset_create(BIO_POOL_SIZE, 0); - if (!fs_bio_set) - panic("bio: can't allocate bios\n"); - - if (bioset_integrity_create(fs_bio_set, BIO_POOL_SIZE)) - panic("bio: can't create integrity pool\n"); - - return 0; -} -subsys_initcall(init_bio); diff --git a/fs/block_dev.c b/fs/block_dev.c index 552a8d13bc32..83fba15cc394 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -363,6 +363,69 @@ int blkdev_fsync(struct file *filp, loff_t start, loff_t end, int datasync) } EXPORT_SYMBOL(blkdev_fsync); +/** + * bdev_read_page() - Start reading a page from a block device + * @bdev: The device to read the page from + * @sector: The offset on the device to read the page to (need not be aligned) + * @page: The page to read + * + * On entry, the page should be locked. It will be unlocked when the page + * has been read. If the block driver implements rw_page synchronously, + * that will be true on exit from this function, but it need not be. + * + * Errors returned by this function are usually "soft", eg out of memory, or + * queue full; callers should try a different route to read this page rather + * than propagate an error back up the stack. + * + * Return: negative errno if an error occurs, 0 if submission was successful. + */ +int bdev_read_page(struct block_device *bdev, sector_t sector, + struct page *page) +{ + const struct block_device_operations *ops = bdev->bd_disk->fops; + if (!ops->rw_page) + return -EOPNOTSUPP; + return ops->rw_page(bdev, sector + get_start_sect(bdev), page, READ); +} +EXPORT_SYMBOL_GPL(bdev_read_page); + +/** + * bdev_write_page() - Start writing a page to a block device + * @bdev: The device to write the page to + * @sector: The offset on the device to write the page to (need not be aligned) + * @page: The page to write + * @wbc: The writeback_control for the write + * + * On entry, the page should be locked and not currently under writeback. + * On exit, if the write started successfully, the page will be unlocked and + * under writeback. If the write failed already (eg the driver failed to + * queue the page to the device), the page will still be locked. If the + * caller is a ->writepage implementation, it will need to unlock the page. + * + * Errors returned by this function are usually "soft", eg out of memory, or + * queue full; callers should try a different route to write this page rather + * than propagate an error back up the stack. + * + * Return: negative errno if an error occurs, 0 if submission was successful. + */ +int bdev_write_page(struct block_device *bdev, sector_t sector, + struct page *page, struct writeback_control *wbc) +{ + int result; + int rw = (wbc->sync_mode == WB_SYNC_ALL) ? WRITE_SYNC : WRITE; + const struct block_device_operations *ops = bdev->bd_disk->fops; + if (!ops->rw_page) + return -EOPNOTSUPP; + set_page_writeback(page); + result = ops->rw_page(bdev, sector + get_start_sect(bdev), page, rw); + if (result) + end_page_writeback(page); + else + unlock_page(page); + return result; +} +EXPORT_SYMBOL_GPL(bdev_write_page); + /* * pseudo-fs */ diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h index c9a24444ec9a..2256e9cceec5 100644 --- a/fs/btrfs/btrfs_inode.h +++ b/fs/btrfs/btrfs_inode.h @@ -279,7 +279,7 @@ static inline void btrfs_inode_block_unlocked_dio(struct inode *inode) static inline void btrfs_inode_resume_unlocked_dio(struct inode *inode) { - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(BTRFS_INODE_READDIO_NEED_LOCK, &BTRFS_I(inode)->runtime_flags); } diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 3955e475ceec..4cd0ac983f91 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -3458,7 +3458,7 @@ static int lock_extent_buffer_for_io(struct extent_buffer *eb, static void end_extent_buffer_writeback(struct extent_buffer *eb) { clear_bit(EXTENT_BUFFER_WRITEBACK, &eb->bflags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&eb->bflags, EXTENT_BUFFER_WRITEBACK); } @@ -4510,7 +4510,8 @@ static void check_buffer_tree_ref(struct extent_buffer *eb) spin_unlock(&eb->refs_lock); } -static void mark_extent_buffer_accessed(struct extent_buffer *eb) +static void mark_extent_buffer_accessed(struct extent_buffer *eb, + struct page *accessed) { unsigned long num_pages, i; @@ -4519,7 +4520,8 @@ static void mark_extent_buffer_accessed(struct extent_buffer *eb) num_pages = num_extent_pages(eb->start, eb->len); for (i = 0; i < num_pages; i++) { struct page *p = extent_buffer_page(eb, i); - mark_page_accessed(p); + if (p != accessed) + mark_page_accessed(p); } } @@ -4533,7 +4535,7 @@ struct extent_buffer *find_extent_buffer(struct btrfs_fs_info *fs_info, start >> PAGE_CACHE_SHIFT); if (eb && atomic_inc_not_zero(&eb->refs)) { rcu_read_unlock(); - mark_extent_buffer_accessed(eb); + mark_extent_buffer_accessed(eb, NULL); return eb; } rcu_read_unlock(); @@ -4581,7 +4583,7 @@ struct extent_buffer *alloc_extent_buffer(struct btrfs_fs_info *fs_info, spin_unlock(&mapping->private_lock); unlock_page(p); page_cache_release(p); - mark_extent_buffer_accessed(exists); + mark_extent_buffer_accessed(exists, p); goto free_eb; } @@ -4596,7 +4598,6 @@ struct extent_buffer *alloc_extent_buffer(struct btrfs_fs_info *fs_info, attach_extent_buffer_page(eb, p); spin_unlock(&mapping->private_lock); WARN_ON(PageDirty(p)); - mark_page_accessed(p); eb->pages[i] = p; if (!PageUptodate(p)) uptodate = 0; diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index ae6af072b635..74272a3f9d9b 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -470,11 +470,12 @@ static void btrfs_drop_pages(struct page **pages, size_t num_pages) for (i = 0; i < num_pages; i++) { /* page checked is some magic around finding pages that * have been modified without going through btrfs_set_page_dirty - * clear it here + * clear it here. There should be no need to mark the pages + * accessed as prepare_pages should have marked them accessed + * in prepare_pages via find_or_create_page() */ ClearPageChecked(pages[i]); unlock_page(pages[i]); - mark_page_accessed(pages[i]); page_cache_release(pages[i]); } } diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 5f805bc944fa..5a3b8371772e 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -7126,7 +7126,7 @@ static void btrfs_end_dio_bio(struct bio *bio, int err) * before atomic variable goto zero, we must make sure * dip->errors is perceived to be set. */ - smp_mb__before_atomic_dec(); + smp_mb__before_atomic(); } /* if there are more bios still pending for this dio, just exit */ @@ -7306,7 +7306,7 @@ out_err: * before atomic variable goto zero, we must * make sure dip->errors is perceived to be set. */ - smp_mb__before_atomic_dec(); + smp_mb__before_atomic(); if (atomic_dec_and_test(&dip->pending_bios)) bio_io_error(dip->orig_bio); @@ -7449,7 +7449,7 @@ static ssize_t btrfs_direct_IO(int rw, struct kiocb *iocb, return 0; atomic_inc(&inode->i_dio_count); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); /* * The generic stuff only does filemap_write_and_wait_range, which diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 2f6d7b13b5bd..3f52bb7a58d2 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -642,7 +642,7 @@ static int create_snapshot(struct btrfs_root *root, struct inode *dir, return -EINVAL; atomic_inc(&root->will_be_snapshoted); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); btrfs_wait_nocow_write(root); ret = btrfs_start_delalloc_inodes(root, 0); diff --git a/fs/buffer.c b/fs/buffer.c index 9ddb9fc7d923..eba6e4f621ce 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -77,7 +77,7 @@ EXPORT_SYMBOL(__lock_buffer); void unlock_buffer(struct buffer_head *bh) { clear_bit_unlock(BH_Lock, &bh->b_state); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&bh->b_state, BH_Lock); } EXPORT_SYMBOL(unlock_buffer); @@ -227,7 +227,7 @@ __find_get_block_slow(struct block_device *bdev, sector_t block) int all_mapped = 1; index = block >> (PAGE_CACHE_SHIFT - bd_inode->i_blkbits); - page = find_get_page(bd_mapping, index); + page = find_get_page_flags(bd_mapping, index, FGP_ACCESSED); if (!page) goto out; @@ -1366,12 +1366,13 @@ __find_get_block(struct block_device *bdev, sector_t block, unsigned size) struct buffer_head *bh = lookup_bh_lru(bdev, block, size); if (bh == NULL) { + /* __find_get_block_slow will mark the page accessed */ bh = __find_get_block_slow(bdev, block); if (bh) bh_lru_install(bh); - } - if (bh) + } else touch_buffer(bh); + return bh; } EXPORT_SYMBOL(__find_get_block); @@ -1483,16 +1484,27 @@ EXPORT_SYMBOL(set_bh_page); /* * Called when truncating a buffer on a page completely. */ + +/* Bits that are cleared during an invalidate */ +#define BUFFER_FLAGS_DISCARD \ + (1 << BH_Mapped | 1 << BH_New | 1 << BH_Req | \ + 1 << BH_Delay | 1 << BH_Unwritten) + static void discard_buffer(struct buffer_head * bh) { + unsigned long b_state, b_state_old; + lock_buffer(bh); clear_buffer_dirty(bh); bh->b_bdev = NULL; - clear_buffer_mapped(bh); - clear_buffer_req(bh); - clear_buffer_new(bh); - clear_buffer_delay(bh); - clear_buffer_unwritten(bh); + b_state = bh->b_state; + for (;;) { + b_state_old = cmpxchg(&bh->b_state, b_state, + (b_state & ~BUFFER_FLAGS_DISCARD)); + if (b_state_old == b_state) + break; + b_state = b_state_old; + } unlock_buffer(bh); } @@ -2879,10 +2891,9 @@ EXPORT_SYMBOL(block_truncate_page); /* * The generic ->writepage function for buffer-backed address_spaces - * this form passes in the end_io handler used to finish the IO. */ -int block_write_full_page_endio(struct page *page, get_block_t *get_block, - struct writeback_control *wbc, bh_end_io_t *handler) +int block_write_full_page(struct page *page, get_block_t *get_block, + struct writeback_control *wbc) { struct inode * const inode = page->mapping->host; loff_t i_size = i_size_read(inode); @@ -2892,7 +2903,7 @@ int block_write_full_page_endio(struct page *page, get_block_t *get_block, /* Is the page fully inside i_size? */ if (page->index < end_index) return __block_write_full_page(inode, page, get_block, wbc, - handler); + end_buffer_async_write); /* Is the page fully outside i_size? (truncate in progress) */ offset = i_size & (PAGE_CACHE_SIZE-1); @@ -2915,18 +2926,8 @@ int block_write_full_page_endio(struct page *page, get_block_t *get_block, * writes to that region are not written out to the file." */ zero_user_segment(page, offset, PAGE_CACHE_SIZE); - return __block_write_full_page(inode, page, get_block, wbc, handler); -} -EXPORT_SYMBOL(block_write_full_page_endio); - -/* - * The generic ->writepage function for buffer-backed address_spaces - */ -int block_write_full_page(struct page *page, get_block_t *get_block, - struct writeback_control *wbc) -{ - return block_write_full_page_endio(page, get_block, wbc, - end_buffer_async_write); + return __block_write_full_page(inode, page, get_block, wbc, + end_buffer_async_write); } EXPORT_SYMBOL(block_write_full_page); diff --git a/fs/cachefiles/bind.c b/fs/cachefiles/bind.c index 5b99bafc31d1..d749731dc0ee 100644 --- a/fs/cachefiles/bind.c +++ b/fs/cachefiles/bind.c @@ -50,18 +50,18 @@ int cachefiles_daemon_bind(struct cachefiles_cache *cache, char *args) cache->brun_percent < 100); if (*args) { - kerror("'bind' command doesn't take an argument"); + pr_err("'bind' command doesn't take an argument"); return -EINVAL; } if (!cache->rootdirname) { - kerror("No cache directory specified"); + pr_err("No cache directory specified"); return -EINVAL; } /* don't permit already bound caches to be re-bound */ if (test_bit(CACHEFILES_READY, &cache->flags)) { - kerror("Cache already bound"); + pr_err("Cache already bound"); return -EBUSY; } @@ -228,9 +228,7 @@ static int cachefiles_daemon_add_cache(struct cachefiles_cache *cache) set_bit(CACHEFILES_READY, &cache->flags); dput(root); - printk(KERN_INFO "CacheFiles:" - " File cache on %s registered\n", - cache->cache.identifier); + pr_info("File cache on %s registered\n", cache->cache.identifier); /* check how much space the cache has */ cachefiles_has_space(cache, 0, 0); @@ -250,7 +248,7 @@ error_open_root: kmem_cache_free(cachefiles_object_jar, fsdef); error_root_object: cachefiles_end_secure(cache, saved_cred); - kerror("Failed to register: %d", ret); + pr_err("Failed to register: %d", ret); return ret; } @@ -262,9 +260,8 @@ void cachefiles_daemon_unbind(struct cachefiles_cache *cache) _enter(""); if (test_bit(CACHEFILES_READY, &cache->flags)) { - printk(KERN_INFO "CacheFiles:" - " File cache on %s unregistering\n", - cache->cache.identifier); + pr_info("File cache on %s unregistering\n", + cache->cache.identifier); fscache_withdraw_cache(&cache->cache); } diff --git a/fs/cachefiles/daemon.c b/fs/cachefiles/daemon.c index 0a1467b15516..b078d3081d6c 100644 --- a/fs/cachefiles/daemon.c +++ b/fs/cachefiles/daemon.c @@ -315,8 +315,7 @@ static unsigned int cachefiles_daemon_poll(struct file *file, static int cachefiles_daemon_range_error(struct cachefiles_cache *cache, char *args) { - kerror("Free space limits must be in range" - " 0%%<=stop<cull<run<100%%"); + pr_err("Free space limits must be in range 0%%<=stop<cull<run<100%%"); return -EINVAL; } @@ -476,12 +475,12 @@ static int cachefiles_daemon_dir(struct cachefiles_cache *cache, char *args) _enter(",%s", args); if (!*args) { - kerror("Empty directory specified"); + pr_err("Empty directory specified"); return -EINVAL; } if (cache->rootdirname) { - kerror("Second cache directory specified"); + pr_err("Second cache directory specified"); return -EEXIST; } @@ -504,12 +503,12 @@ static int cachefiles_daemon_secctx(struct cachefiles_cache *cache, char *args) _enter(",%s", args); if (!*args) { - kerror("Empty security context specified"); + pr_err("Empty security context specified"); return -EINVAL; } if (cache->secctx) { - kerror("Second security context specified"); + pr_err("Second security context specified"); return -EINVAL; } @@ -532,7 +531,7 @@ static int cachefiles_daemon_tag(struct cachefiles_cache *cache, char *args) _enter(",%s", args); if (!*args) { - kerror("Empty tag specified"); + pr_err("Empty tag specified"); return -EINVAL; } @@ -563,12 +562,12 @@ static int cachefiles_daemon_cull(struct cachefiles_cache *cache, char *args) goto inval; if (!test_bit(CACHEFILES_READY, &cache->flags)) { - kerror("cull applied to unready cache"); + pr_err("cull applied to unready cache"); return -EIO; } if (test_bit(CACHEFILES_DEAD, &cache->flags)) { - kerror("cull applied to dead cache"); + pr_err("cull applied to dead cache"); return -EIO; } @@ -588,11 +587,11 @@ static int cachefiles_daemon_cull(struct cachefiles_cache *cache, char *args) notdir: path_put(&path); - kerror("cull command requires dirfd to be a directory"); + pr_err("cull command requires dirfd to be a directory"); return -ENOTDIR; inval: - kerror("cull command requires dirfd and filename"); + pr_err("cull command requires dirfd and filename"); return -EINVAL; } @@ -615,7 +614,7 @@ static int cachefiles_daemon_debug(struct cachefiles_cache *cache, char *args) return 0; inval: - kerror("debug command requires mask"); + pr_err("debug command requires mask"); return -EINVAL; } @@ -635,12 +634,12 @@ static int cachefiles_daemon_inuse(struct cachefiles_cache *cache, char *args) goto inval; if (!test_bit(CACHEFILES_READY, &cache->flags)) { - kerror("inuse applied to unready cache"); + pr_err("inuse applied to unready cache"); return -EIO; } if (test_bit(CACHEFILES_DEAD, &cache->flags)) { - kerror("inuse applied to dead cache"); + pr_err("inuse applied to dead cache"); return -EIO; } @@ -660,11 +659,11 @@ static int cachefiles_daemon_inuse(struct cachefiles_cache *cache, char *args) notdir: path_put(&path); - kerror("inuse command requires dirfd to be a directory"); + pr_err("inuse command requires dirfd to be a directory"); return -ENOTDIR; inval: - kerror("inuse command requires dirfd and filename"); + pr_err("inuse command requires dirfd and filename"); return -EINVAL; } diff --git a/fs/cachefiles/interface.c b/fs/cachefiles/interface.c index 57e17fe6121a..584743d456c3 100644 --- a/fs/cachefiles/interface.c +++ b/fs/cachefiles/interface.c @@ -146,8 +146,7 @@ static int cachefiles_lookup_object(struct fscache_object *_object) if (ret < 0 && ret != -ETIMEDOUT) { if (ret != -ENOBUFS) - printk(KERN_WARNING - "CacheFiles: Lookup failed error %d\n", ret); + pr_warn("Lookup failed error %d\n", ret); fscache_object_lookup_error(&object->fscache); } diff --git a/fs/cachefiles/internal.h b/fs/cachefiles/internal.h index 5349473df1b1..3d50998abf57 100644 --- a/fs/cachefiles/internal.h +++ b/fs/cachefiles/internal.h @@ -9,6 +9,13 @@ * 2 of the Licence, or (at your option) any later version. */ +#ifdef pr_fmt +#undef pr_fmt +#endif + +#define pr_fmt(fmt) "CacheFiles: " fmt + + #include <linux/fscache-cache.h> #include <linux/timer.h> #include <linux/wait.h> @@ -245,11 +252,10 @@ extern int cachefiles_remove_object_xattr(struct cachefiles_cache *cache, /* * error handling */ -#define kerror(FMT, ...) printk(KERN_ERR "CacheFiles: "FMT"\n", ##__VA_ARGS__) #define cachefiles_io_error(___cache, FMT, ...) \ do { \ - kerror("I/O Error: " FMT, ##__VA_ARGS__); \ + pr_err("I/O Error: " FMT, ##__VA_ARGS__); \ fscache_io_error(&(___cache)->cache); \ set_bit(CACHEFILES_DEAD, &(___cache)->flags); \ } while (0) @@ -310,8 +316,8 @@ do { \ #define ASSERT(X) \ do { \ if (unlikely(!(X))) { \ - printk(KERN_ERR "\n"); \ - printk(KERN_ERR "CacheFiles: Assertion failed\n"); \ + pr_err("\n"); \ + pr_err("Assertion failed\n"); \ BUG(); \ } \ } while (0) @@ -319,9 +325,9 @@ do { \ #define ASSERTCMP(X, OP, Y) \ do { \ if (unlikely(!((X) OP (Y)))) { \ - printk(KERN_ERR "\n"); \ - printk(KERN_ERR "CacheFiles: Assertion failed\n"); \ - printk(KERN_ERR "%lx " #OP " %lx is false\n", \ + pr_err("\n"); \ + pr_err("Assertion failed\n"); \ + pr_err("%lx " #OP " %lx is false\n", \ (unsigned long)(X), (unsigned long)(Y)); \ BUG(); \ } \ @@ -330,8 +336,8 @@ do { \ #define ASSERTIF(C, X) \ do { \ if (unlikely((C) && !(X))) { \ - printk(KERN_ERR "\n"); \ - printk(KERN_ERR "CacheFiles: Assertion failed\n"); \ + pr_err("\n"); \ + pr_err("Assertion failed\n"); \ BUG(); \ } \ } while (0) @@ -339,9 +345,9 @@ do { \ #define ASSERTIFCMP(C, X, OP, Y) \ do { \ if (unlikely((C) && !((X) OP (Y)))) { \ - printk(KERN_ERR "\n"); \ - printk(KERN_ERR "CacheFiles: Assertion failed\n"); \ - printk(KERN_ERR "%lx " #OP " %lx is false\n", \ + pr_err("\n"); \ + pr_err("Assertion failed\n"); \ + pr_err("%lx " #OP " %lx is false\n", \ (unsigned long)(X), (unsigned long)(Y)); \ BUG(); \ } \ diff --git a/fs/cachefiles/main.c b/fs/cachefiles/main.c index 4bfa8cf43bf5..180edfb45f66 100644 --- a/fs/cachefiles/main.c +++ b/fs/cachefiles/main.c @@ -68,8 +68,7 @@ static int __init cachefiles_init(void) SLAB_HWCACHE_ALIGN, cachefiles_object_init_once); if (!cachefiles_object_jar) { - printk(KERN_NOTICE - "CacheFiles: Failed to allocate an object jar\n"); + pr_notice("Failed to allocate an object jar\n"); goto error_object_jar; } @@ -77,7 +76,7 @@ static int __init cachefiles_init(void) if (ret < 0) goto error_proc; - printk(KERN_INFO "CacheFiles: Loaded\n"); + pr_info("Loaded\n"); return 0; error_proc: @@ -85,7 +84,7 @@ error_proc: error_object_jar: misc_deregister(&cachefiles_dev); error_dev: - kerror("failed to register: %d", ret); + pr_err("failed to register: %d", ret); return ret; } @@ -96,7 +95,7 @@ fs_initcall(cachefiles_init); */ static void __exit cachefiles_exit(void) { - printk(KERN_INFO "CacheFiles: Unloading\n"); + pr_info("Unloading\n"); cachefiles_proc_cleanup(); kmem_cache_destroy(cachefiles_object_jar); diff --git a/fs/cachefiles/namei.c b/fs/cachefiles/namei.c index c0a681705104..5bf2b41e66d3 100644 --- a/fs/cachefiles/namei.c +++ b/fs/cachefiles/namei.c @@ -35,22 +35,21 @@ void __cachefiles_printk_object(struct cachefiles_object *object, struct fscache_cookie *cookie; unsigned keylen, loop; - printk(KERN_ERR "%sobject: OBJ%x\n", - prefix, object->fscache.debug_id); - printk(KERN_ERR "%sobjstate=%s fl=%lx wbusy=%x ev=%lx[%lx]\n", + pr_err("%sobject: OBJ%x\n", prefix, object->fscache.debug_id); + pr_err("%sobjstate=%s fl=%lx wbusy=%x ev=%lx[%lx]\n", prefix, object->fscache.state->name, object->fscache.flags, work_busy(&object->fscache.work), object->fscache.events, object->fscache.event_mask); - printk(KERN_ERR "%sops=%u inp=%u exc=%u\n", + pr_err("%sops=%u inp=%u exc=%u\n", prefix, object->fscache.n_ops, object->fscache.n_in_progress, object->fscache.n_exclusive); - printk(KERN_ERR "%sparent=%p\n", + pr_err("%sparent=%p\n", prefix, object->fscache.parent); spin_lock(&object->fscache.lock); cookie = object->fscache.cookie; if (cookie) { - printk(KERN_ERR "%scookie=%p [pr=%p nd=%p fl=%lx]\n", + pr_err("%scookie=%p [pr=%p nd=%p fl=%lx]\n", prefix, object->fscache.cookie, object->fscache.cookie->parent, @@ -62,16 +61,16 @@ void __cachefiles_printk_object(struct cachefiles_object *object, else keylen = 0; } else { - printk(KERN_ERR "%scookie=NULL\n", prefix); + pr_err("%scookie=NULL\n", prefix); keylen = 0; } spin_unlock(&object->fscache.lock); if (keylen) { - printk(KERN_ERR "%skey=[%u] '", prefix, keylen); + pr_err("%skey=[%u] '", prefix, keylen); for (loop = 0; loop < keylen; loop++) - printk("%02x", keybuf[loop]); - printk("'\n"); + pr_cont("%02x", keybuf[loop]); + pr_cont("'\n"); } } @@ -131,13 +130,11 @@ found_dentry: dentry); if (fscache_object_is_live(&object->fscache)) { - printk(KERN_ERR "\n"); - printk(KERN_ERR "CacheFiles: Error:" - " Can't preemptively bury live object\n"); + pr_err("\n"); + pr_err("Error: Can't preemptively bury live object\n"); cachefiles_printk_object(object, NULL); } else if (test_and_set_bit(CACHEFILES_OBJECT_BURIED, &object->flags)) { - printk(KERN_ERR "CacheFiles: Error:" - " Object already preemptively buried\n"); + pr_err("Error: Object already preemptively buried\n"); } write_unlock(&cache->active_lock); @@ -160,7 +157,7 @@ try_again: write_lock(&cache->active_lock); if (test_and_set_bit(CACHEFILES_OBJECT_ACTIVE, &object->flags)) { - printk(KERN_ERR "CacheFiles: Error: Object already active\n"); + pr_err("Error: Object already active\n"); cachefiles_printk_object(object, NULL); BUG(); } @@ -193,9 +190,8 @@ try_again: * need to wait for it to be destroyed */ wait_for_old_object: if (fscache_object_is_live(&object->fscache)) { - printk(KERN_ERR "\n"); - printk(KERN_ERR "CacheFiles: Error:" - " Unexpected object collision\n"); + pr_err("\n"); + pr_err("Error: Unexpected object collision\n"); cachefiles_printk_object(object, xobject); BUG(); } @@ -241,9 +237,8 @@ wait_for_old_object: } if (timeout <= 0) { - printk(KERN_ERR "\n"); - printk(KERN_ERR "CacheFiles: Error: Overlong" - " wait for old active object to go away\n"); + pr_err("\n"); + pr_err("Error: Overlong wait for old active object to go away\n"); cachefiles_printk_object(object, xobject); goto requeue; } @@ -548,7 +543,7 @@ lookup_again: next, next->d_inode, next->d_inode->i_ino); } else if (!S_ISDIR(next->d_inode->i_mode)) { - kerror("inode %lu is not a directory", + pr_err("inode %lu is not a directory", next->d_inode->i_ino); ret = -ENOBUFS; goto error; @@ -579,7 +574,7 @@ lookup_again: } else if (!S_ISDIR(next->d_inode->i_mode) && !S_ISREG(next->d_inode->i_mode) ) { - kerror("inode %lu is not a file or directory", + pr_err("inode %lu is not a file or directory", next->d_inode->i_ino); ret = -ENOBUFS; goto error; @@ -773,7 +768,7 @@ struct dentry *cachefiles_get_directory(struct cachefiles_cache *cache, ASSERT(subdir->d_inode); if (!S_ISDIR(subdir->d_inode->i_mode)) { - kerror("%s is not a directory", dirname); + pr_err("%s is not a directory", dirname); ret = -EIO; goto check_error; } @@ -800,13 +795,13 @@ check_error: mkdir_error: mutex_unlock(&dir->d_inode->i_mutex); dput(subdir); - kerror("mkdir %s failed with error %d", dirname, ret); + pr_err("mkdir %s failed with error %d", dirname, ret); return ERR_PTR(ret); lookup_error: mutex_unlock(&dir->d_inode->i_mutex); ret = PTR_ERR(subdir); - kerror("Lookup %s failed with error %d", dirname, ret); + pr_err("Lookup %s failed with error %d", dirname, ret); return ERR_PTR(ret); nomem_d_alloc: @@ -896,7 +891,7 @@ lookup_error: if (ret == -EIO) { cachefiles_io_error(cache, "Lookup failed"); } else if (ret != -ENOMEM) { - kerror("Internal error: %d", ret); + pr_err("Internal error: %d", ret); ret = -EIO; } @@ -955,7 +950,7 @@ error: } if (ret != -ENOMEM) { - kerror("Internal error: %d", ret); + pr_err("Internal error: %d", ret); ret = -EIO; } diff --git a/fs/cachefiles/security.c b/fs/cachefiles/security.c index 039b5011d83b..396c18ea2764 100644 --- a/fs/cachefiles/security.c +++ b/fs/cachefiles/security.c @@ -34,9 +34,7 @@ int cachefiles_get_security_ID(struct cachefiles_cache *cache) ret = set_security_override_from_ctx(new, cache->secctx); if (ret < 0) { put_cred(new); - printk(KERN_ERR "CacheFiles:" - " Security denies permission to nominate" - " security context: error %d\n", + pr_err("Security denies permission to nominate security context: error %d\n", ret); goto error; } @@ -59,16 +57,14 @@ static int cachefiles_check_cache_dir(struct cachefiles_cache *cache, ret = security_inode_mkdir(root->d_inode, root, 0); if (ret < 0) { - printk(KERN_ERR "CacheFiles:" - " Security denies permission to make dirs: error %d", + pr_err("Security denies permission to make dirs: error %d", ret); return ret; } ret = security_inode_create(root->d_inode, root, 0); if (ret < 0) - printk(KERN_ERR "CacheFiles:" - " Security denies permission to create files: error %d", + pr_err("Security denies permission to create files: error %d", ret); return ret; diff --git a/fs/cachefiles/xattr.c b/fs/cachefiles/xattr.c index 12b0eef84183..1ad51ffbb275 100644 --- a/fs/cachefiles/xattr.c +++ b/fs/cachefiles/xattr.c @@ -51,7 +51,7 @@ int cachefiles_check_object_type(struct cachefiles_object *object) } if (ret != -EEXIST) { - kerror("Can't set xattr on %*.*s [%lu] (err %d)", + pr_err("Can't set xattr on %*.*s [%lu] (err %d)", dentry->d_name.len, dentry->d_name.len, dentry->d_name.name, dentry->d_inode->i_ino, -ret); @@ -64,7 +64,7 @@ int cachefiles_check_object_type(struct cachefiles_object *object) if (ret == -ERANGE) goto bad_type_length; - kerror("Can't read xattr on %*.*s [%lu] (err %d)", + pr_err("Can't read xattr on %*.*s [%lu] (err %d)", dentry->d_name.len, dentry->d_name.len, dentry->d_name.name, dentry->d_inode->i_ino, -ret); @@ -85,14 +85,14 @@ error: return ret; bad_type_length: - kerror("Cache object %lu type xattr length incorrect", + pr_err("Cache object %lu type xattr length incorrect", dentry->d_inode->i_ino); ret = -EIO; goto error; bad_type: xtype[2] = 0; - kerror("Cache object %*.*s [%lu] type %s not %s", + pr_err("Cache object %*.*s [%lu] type %s not %s", dentry->d_name.len, dentry->d_name.len, dentry->d_name.name, dentry->d_inode->i_ino, xtype, type); @@ -293,7 +293,7 @@ error: return ret; bad_type_length: - kerror("Cache object %lu xattr length incorrect", + pr_err("Cache object %lu xattr length incorrect", dentry->d_inode->i_ino); ret = -EIO; goto error; diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index b53278c9fd97..65a30e817dd8 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -694,7 +694,7 @@ static int ceph_writepages_start(struct address_space *mapping, (wbc->sync_mode == WB_SYNC_ALL ? "ALL" : "HOLD")); if (fsc->mount_state == CEPH_MOUNT_SHUTDOWN) { - pr_warning("writepage_start %p on forced umount\n", inode); + pr_warn("writepage_start %p on forced umount\n", inode); return -EIO; /* we're in a forced umount, don't write! */ } if (fsc->mount_options->wsize && fsc->mount_options->wsize < wsize) diff --git a/fs/ceph/debugfs.c b/fs/ceph/debugfs.c index 16b54aa31f08..5a743ac141ab 100644 --- a/fs/ceph/debugfs.c +++ b/fs/ceph/debugfs.c @@ -71,9 +71,9 @@ static int mdsc_show(struct seq_file *s, void *p) seq_printf(s, "%s", ceph_mds_op_name(req->r_op)); if (req->r_got_unsafe) - seq_printf(s, "\t(unsafe)"); + seq_puts(s, "\t(unsafe)"); else - seq_printf(s, "\t"); + seq_puts(s, "\t"); if (req->r_inode) { seq_printf(s, " #%llx", ceph_ino(req->r_inode)); @@ -119,7 +119,7 @@ static int mdsc_show(struct seq_file *s, void *p) seq_printf(s, " %s", req->r_path2); } - seq_printf(s, "\n"); + seq_puts(s, "\n"); } mutex_unlock(&mdsc->mutex); diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c index 233c6f96910a..e4fff9ff1c27 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -821,7 +821,7 @@ no_change: spin_unlock(&ci->i_ceph_lock); } } else if (cap_fmode >= 0) { - pr_warning("mds issued no caps on %llx.%llx\n", + pr_warn("mds issued no caps on %llx.%llx\n", ceph_vinop(inode)); __ceph_get_fmode(ci, cap_fmode); } diff --git a/fs/ceph/locks.c b/fs/ceph/locks.c index 191398852a2e..fbc39c47bacd 100644 --- a/fs/ceph/locks.c +++ b/fs/ceph/locks.c @@ -53,10 +53,7 @@ static int ceph_lock_message(u8 lock_type, u16 operation, struct file *file, else length = fl->fl_end - fl->fl_start + 1; - if (lock_type == CEPH_LOCK_FCNTL) - owner = secure_addr(fl->fl_owner); - else - owner = secure_addr(fl->fl_file); + owner = secure_addr(fl->fl_owner); dout("ceph_lock_message: rule: %d, op: %d, owner: %llx, pid: %llu, " "start: %llu, length: %llu, wait: %d, type: %d", (int)lock_type, @@ -314,10 +311,7 @@ int lock_to_ceph_filelock(struct file_lock *lock, cephlock->length = cpu_to_le64(lock->fl_end - lock->fl_start + 1); cephlock->client = cpu_to_le64(0); cephlock->pid = cpu_to_le64((u64)lock->fl_pid); - if (lock->fl_flags & FL_POSIX) - cephlock->owner = cpu_to_le64(secure_addr(lock->fl_owner)); - else - cephlock->owner = cpu_to_le64(secure_addr(lock->fl_file)); + cephlock->owner = cpu_to_le64(secure_addr(lock->fl_owner)); switch (lock->fl_type) { case F_RDLCK: diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index 2b4d093d0563..9a33b98cb000 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -2218,13 +2218,13 @@ static void handle_reply(struct ceph_mds_session *session, struct ceph_msg *msg) /* dup? */ if ((req->r_got_unsafe && !head->safe) || (req->r_got_safe && head->safe)) { - pr_warning("got a dup %s reply on %llu from mds%d\n", + pr_warn("got a dup %s reply on %llu from mds%d\n", head->safe ? "safe" : "unsafe", tid, mds); mutex_unlock(&mdsc->mutex); goto out; } if (req->r_got_safe && !head->safe) { - pr_warning("got unsafe after safe on %llu from mds%d\n", + pr_warn("got unsafe after safe on %llu from mds%d\n", tid, mds); mutex_unlock(&mdsc->mutex); goto out; @@ -3525,7 +3525,7 @@ static void peer_reset(struct ceph_connection *con) struct ceph_mds_session *s = con->private; struct ceph_mds_client *mdsc = s->s_mdsc; - pr_warning("mds%d closed our session\n", s->s_mds); + pr_warn("mds%d closed our session\n", s->s_mds); send_mds_reconnect(mdsc, s); } diff --git a/fs/ceph/mdsmap.c b/fs/ceph/mdsmap.c index 132b64eeecd4..261531e55e9d 100644 --- a/fs/ceph/mdsmap.c +++ b/fs/ceph/mdsmap.c @@ -62,7 +62,7 @@ struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end) ceph_decode_16_safe(p, end, version, bad); if (version > 3) { - pr_warning("got mdsmap version %d > 3, failing", version); + pr_warn("got mdsmap version %d > 3, failing", version); goto bad; } diff --git a/fs/coda/cnode.c b/fs/coda/cnode.c index 911cf30d057d..7740b1c871c1 100644 --- a/fs/coda/cnode.c +++ b/fs/coda/cnode.c @@ -101,7 +101,7 @@ struct inode *coda_cnode_make(struct CodaFid *fid, struct super_block *sb) inode = coda_iget(sb, fid, &attr); if (IS_ERR(inode)) - printk("coda_cnode_make: coda_iget failed\n"); + pr_warn("%s: coda_iget failed\n", __func__); return inode; } @@ -137,7 +137,7 @@ struct inode *coda_fid_to_inode(struct CodaFid *fid, struct super_block *sb) unsigned long hash = coda_f2i(fid); if ( !sb ) { - printk("coda_fid_to_inode: no sb!\n"); + pr_warn("%s: no sb!\n", __func__); return NULL; } diff --git a/fs/coda/coda_linux.h b/fs/coda/coda_linux.h index e7550cb9fb74..d42b725b1d21 100644 --- a/fs/coda/coda_linux.h +++ b/fs/coda/coda_linux.h @@ -12,6 +12,12 @@ #ifndef _LINUX_CODA_FS #define _LINUX_CODA_FS +#ifdef pr_fmt +#undef pr_fmt +#endif + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/kernel.h> #include <linux/param.h> #include <linux/mm.h> @@ -63,7 +69,7 @@ void coda_sysctl_clean(void); else \ ptr = (cast)vzalloc((unsigned long) size); \ if (!ptr) \ - printk("kernel malloc returns 0 at %s:%d\n", __FILE__, __LINE__); \ + pr_warn("kernel malloc returns 0 at %s:%d\n", __FILE__, __LINE__); \ } while (0) diff --git a/fs/coda/dir.c b/fs/coda/dir.c index 5efbb5ee0adc..cd8a63238b11 100644 --- a/fs/coda/dir.c +++ b/fs/coda/dir.c @@ -102,7 +102,7 @@ static struct dentry *coda_lookup(struct inode *dir, struct dentry *entry, unsig int type = 0; if (length > CODA_MAXNAMLEN) { - printk(KERN_ERR "name too long: lookup, %s (%*s)\n", + pr_err("name too long: lookup, %s (%*s)\n", coda_i2s(dir), (int)length, name); return ERR_PTR(-ENAMETOOLONG); } @@ -453,23 +453,23 @@ static int coda_venus_readdir(struct file *coda_file, struct dir_context *ctx) ret = kernel_read(host_file, ctx->pos - 2, (char *)vdir, sizeof(*vdir)); if (ret < 0) { - printk(KERN_ERR "coda readdir: read dir %s failed %d\n", - coda_f2s(&cii->c_fid), ret); + pr_err("%s: read dir %s failed %d\n", + __func__, coda_f2s(&cii->c_fid), ret); break; } if (ret == 0) break; /* end of directory file reached */ /* catch truncated reads */ if (ret < vdir_size || ret < vdir_size + vdir->d_namlen) { - printk(KERN_ERR "coda readdir: short read on %s\n", - coda_f2s(&cii->c_fid)); + pr_err("%s: short read on %s\n", + __func__, coda_f2s(&cii->c_fid)); ret = -EBADF; break; } /* validate whether the directory file actually makes sense */ if (vdir->d_reclen < vdir_size + vdir->d_namlen) { - printk(KERN_ERR "coda readdir: invalid dir %s\n", - coda_f2s(&cii->c_fid)); + pr_err("%s: invalid dir %s\n", + __func__, coda_f2s(&cii->c_fid)); ret = -EBADF; break; } @@ -589,8 +589,8 @@ int coda_revalidate_inode(struct inode *inode) coda_vattr_to_iattr(inode, &attr); if ((old_mode & S_IFMT) != (inode->i_mode & S_IFMT)) { - printk("Coda: inode %ld, fid %s changed type!\n", - inode->i_ino, coda_f2s(&(cii->c_fid))); + pr_warn("inode %ld, fid %s changed type!\n", + inode->i_ino, coda_f2s(&(cii->c_fid))); } /* the following can happen when a local fid is replaced diff --git a/fs/coda/inode.c b/fs/coda/inode.c index d9c7751f10ac..fe3afb2de880 100644 --- a/fs/coda/inode.c +++ b/fs/coda/inode.c @@ -119,12 +119,12 @@ static int get_device_index(struct coda_mount_data *data) int idx; if (data == NULL) { - printk("coda_read_super: Bad mount data\n"); + pr_warn("%s: Bad mount data\n", __func__); return -1; } if (data->version != CODA_MOUNT_VERSION) { - printk("coda_read_super: Bad mount version\n"); + pr_warn("%s: Bad mount version\n", __func__); return -1; } @@ -141,13 +141,13 @@ static int get_device_index(struct coda_mount_data *data) fdput(f); if (idx < 0 || idx >= MAX_CODADEVS) { - printk("coda_read_super: Bad minor number\n"); + pr_warn("%s: Bad minor number\n", __func__); return -1; } return idx; Ebadf: - printk("coda_read_super: Bad file\n"); + pr_warn("%s: Bad file\n", __func__); return -1; } @@ -168,19 +168,19 @@ static int coda_fill_super(struct super_block *sb, void *data, int silent) if(idx == -1) idx = 0; - printk(KERN_INFO "coda_read_super: device index: %i\n", idx); + pr_info("%s: device index: %i\n", __func__, idx); vc = &coda_comms[idx]; mutex_lock(&vc->vc_mutex); if (!vc->vc_inuse) { - printk("coda_read_super: No pseudo device\n"); + pr_warn("%s: No pseudo device\n", __func__); error = -EINVAL; goto unlock_out; } if (vc->vc_sb) { - printk("coda_read_super: Device already mounted\n"); + pr_warn("%s: Device already mounted\n", __func__); error = -EBUSY; goto unlock_out; } @@ -204,22 +204,23 @@ static int coda_fill_super(struct super_block *sb, void *data, int silent) /* get root fid from Venus: this needs the root inode */ error = venus_rootfid(sb, &fid); if ( error ) { - printk("coda_read_super: coda_get_rootfid failed with %d\n", - error); + pr_warn("%s: coda_get_rootfid failed with %d\n", + __func__, error); goto error; } - printk("coda_read_super: rootfid is %s\n", coda_f2s(&fid)); + pr_info("%s: rootfid is %s\n", __func__, coda_f2s(&fid)); /* make root inode */ root = coda_cnode_make(&fid, sb); if (IS_ERR(root)) { error = PTR_ERR(root); - printk("Failure of coda_cnode_make for root: error %d\n", error); + pr_warn("Failure of coda_cnode_make for root: error %d\n", + error); goto error; } - printk("coda_read_super: rootinode is %ld dev %s\n", - root->i_ino, root->i_sb->s_id); + pr_info("%s: rootinode is %ld dev %s\n", + __func__, root->i_ino, root->i_sb->s_id); sb->s_root = d_make_root(root); if (!sb->s_root) { error = -EINVAL; @@ -246,7 +247,7 @@ static void coda_put_super(struct super_block *sb) sb->s_fs_info = NULL; mutex_unlock(&vcp->vc_mutex); - printk("Coda: Bye bye.\n"); + pr_info("Bye bye.\n"); } static void coda_evict_inode(struct inode *inode) diff --git a/fs/coda/psdev.c b/fs/coda/psdev.c index ebc2bae6c289..5c1e4242368b 100644 --- a/fs/coda/psdev.c +++ b/fs/coda/psdev.c @@ -114,14 +114,14 @@ static ssize_t coda_psdev_write(struct file *file, const char __user *buf, int size = sizeof(*dcbuf); if ( nbytes < sizeof(struct coda_out_hdr) ) { - printk("coda_downcall opc %d uniq %d, not enough!\n", - hdr.opcode, hdr.unique); + pr_warn("coda_downcall opc %d uniq %d, not enough!\n", + hdr.opcode, hdr.unique); count = nbytes; goto out; } if ( nbytes > size ) { - printk("Coda: downcall opc %d, uniq %d, too much!", - hdr.opcode, hdr.unique); + pr_warn("downcall opc %d, uniq %d, too much!", + hdr.opcode, hdr.unique); nbytes = size; } CODA_ALLOC(dcbuf, union outputArgs *, nbytes); @@ -136,7 +136,8 @@ static ssize_t coda_psdev_write(struct file *file, const char __user *buf, CODA_FREE(dcbuf, nbytes); if (error) { - printk("psdev_write: coda_downcall error: %d\n", error); + pr_warn("%s: coda_downcall error: %d\n", + __func__, error); retval = error; goto out; } @@ -157,16 +158,17 @@ static ssize_t coda_psdev_write(struct file *file, const char __user *buf, mutex_unlock(&vcp->vc_mutex); if (!req) { - printk("psdev_write: msg (%d, %d) not found\n", - hdr.opcode, hdr.unique); + pr_warn("%s: msg (%d, %d) not found\n", + __func__, hdr.opcode, hdr.unique); retval = -ESRCH; goto out; } /* move data into response buffer. */ if (req->uc_outSize < nbytes) { - printk("psdev_write: too much cnt: %d, cnt: %ld, opc: %d, uniq: %d.\n", - req->uc_outSize, (long)nbytes, hdr.opcode, hdr.unique); + pr_warn("%s: too much cnt: %d, cnt: %ld, opc: %d, uniq: %d.\n", + __func__, req->uc_outSize, (long)nbytes, + hdr.opcode, hdr.unique); nbytes = req->uc_outSize; /* don't have more space! */ } if (copy_from_user(req->uc_data, buf, nbytes)) { @@ -240,8 +242,8 @@ static ssize_t coda_psdev_read(struct file * file, char __user * buf, /* Move the input args into userspace */ count = req->uc_inSize; if (nbytes < req->uc_inSize) { - printk ("psdev_read: Venus read %ld bytes of %d in message\n", - (long)nbytes, req->uc_inSize); + pr_warn("%s: Venus read %ld bytes of %d in message\n", + __func__, (long)nbytes, req->uc_inSize); count = nbytes; } @@ -305,7 +307,7 @@ static int coda_psdev_release(struct inode * inode, struct file * file) struct upc_req *req, *tmp; if (!vcp || !vcp->vc_inuse ) { - printk("psdev_release: Not open.\n"); + pr_warn("%s: Not open.\n", __func__); return -1; } @@ -354,8 +356,8 @@ static int init_coda_psdev(void) { int i, err = 0; if (register_chrdev(CODA_PSDEV_MAJOR, "coda", &coda_psdev_fops)) { - printk(KERN_ERR "coda_psdev: unable to get major %d\n", - CODA_PSDEV_MAJOR); + pr_err("%s: unable to get major %d\n", + __func__, CODA_PSDEV_MAJOR); return -EIO; } coda_psdev_class = class_create(THIS_MODULE, "coda"); @@ -393,13 +395,13 @@ static int __init init_coda(void) goto out2; status = init_coda_psdev(); if ( status ) { - printk("Problem (%d) in init_coda_psdev\n", status); + pr_warn("Problem (%d) in init_coda_psdev\n", status); goto out1; } status = register_filesystem(&coda_fs_type); if (status) { - printk("coda: failed to register filesystem!\n"); + pr_warn("failed to register filesystem!\n"); goto out; } return 0; @@ -420,9 +422,8 @@ static void __exit exit_coda(void) int err, i; err = unregister_filesystem(&coda_fs_type); - if ( err != 0 ) { - printk("coda: failed to unregister filesystem\n"); - } + if (err != 0) + pr_warn("failed to unregister filesystem\n"); for (i = 0; i < MAX_CODADEVS; i++) device_destroy(coda_psdev_class, MKDEV(CODA_PSDEV_MAJOR, i)); class_destroy(coda_psdev_class); diff --git a/fs/coda/sysctl.c b/fs/coda/sysctl.c index af56ad56a89a..34218a8a28cd 100644 --- a/fs/coda/sysctl.c +++ b/fs/coda/sysctl.c @@ -14,7 +14,7 @@ #ifdef CONFIG_SYSCTL static struct ctl_table_header *fs_table_header; -static ctl_table coda_table[] = { +static struct ctl_table coda_table[] = { { .procname = "timeout", .data = &coda_timeout, @@ -39,7 +39,7 @@ static ctl_table coda_table[] = { {} }; -static ctl_table fs_table[] = { +static struct ctl_table fs_table[] = { { .procname = "coda", .mode = 0555, diff --git a/fs/coda/upcall.c b/fs/coda/upcall.c index 3a731976dc5e..21fcf8dcb9cd 100644 --- a/fs/coda/upcall.c +++ b/fs/coda/upcall.c @@ -508,8 +508,8 @@ int venus_pioctl(struct super_block *sb, struct CodaFid *fid, inp->coda_ioctl.data = (char *)(INSIZE(ioctl)); /* get the data out of user space */ - if ( copy_from_user((char*)inp + (long)inp->coda_ioctl.data, - data->vi.in, data->vi.in_size) ) { + if (copy_from_user((char *)inp + (long)inp->coda_ioctl.data, + data->vi.in, data->vi.in_size)) { error = -EINVAL; goto exit; } @@ -518,8 +518,8 @@ int venus_pioctl(struct super_block *sb, struct CodaFid *fid, &outsize, inp); if (error) { - printk("coda_pioctl: Venus returns: %d for %s\n", - error, coda_f2s(fid)); + pr_warn("%s: Venus returns: %d for %s\n", + __func__, error, coda_f2s(fid)); goto exit; } @@ -675,7 +675,7 @@ static int coda_upcall(struct venus_comm *vcp, mutex_lock(&vcp->vc_mutex); if (!vcp->vc_inuse) { - printk(KERN_NOTICE "coda: Venus dead, not sending upcall\n"); + pr_notice("Venus dead, not sending upcall\n"); error = -ENXIO; goto exit; } @@ -725,7 +725,7 @@ static int coda_upcall(struct venus_comm *vcp, error = -EINTR; if ((req->uc_flags & CODA_REQ_ABORT) || !signal_pending(current)) { - printk(KERN_WARNING "coda: Unexpected interruption.\n"); + pr_warn("Unexpected interruption.\n"); goto exit; } @@ -735,7 +735,7 @@ static int coda_upcall(struct venus_comm *vcp, /* Venus saw the upcall, make sure we can send interrupt signal */ if (!vcp->vc_inuse) { - printk(KERN_INFO "coda: Venus dead, not sending signal.\n"); + pr_info("Venus dead, not sending signal.\n"); goto exit; } diff --git a/fs/configfs/configfs_internal.h b/fs/configfs/configfs_internal.h index b5f0a3b91f18..bd4a3c167091 100644 --- a/fs/configfs/configfs_internal.h +++ b/fs/configfs/configfs_internal.h @@ -24,6 +24,12 @@ * configfs Copyright (C) 2005 Oracle. All rights reserved. */ +#ifdef pr_fmt +#undef pr_fmt +#endif + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/slab.h> #include <linux/list.h> #include <linux/spinlock.h> diff --git a/fs/configfs/dir.c b/fs/configfs/dir.c index e081acbac2e7..668dcabc5695 100644 --- a/fs/configfs/dir.c +++ b/fs/configfs/dir.c @@ -940,9 +940,9 @@ static void client_drop_item(struct config_item *parent_item, #ifdef DEBUG static void configfs_dump_one(struct configfs_dirent *sd, int level) { - printk(KERN_INFO "%*s\"%s\":\n", level, " ", configfs_get_name(sd)); + pr_info("%*s\"%s\":\n", level, " ", configfs_get_name(sd)); -#define type_print(_type) if (sd->s_type & _type) printk(KERN_INFO "%*s %s\n", level, " ", #_type); +#define type_print(_type) if (sd->s_type & _type) pr_info("%*s %s\n", level, " ", #_type); type_print(CONFIGFS_ROOT); type_print(CONFIGFS_DIR); type_print(CONFIGFS_ITEM_ATTR); @@ -1699,7 +1699,7 @@ void configfs_unregister_subsystem(struct configfs_subsystem *subsys) struct dentry *root = dentry->d_sb->s_root; if (dentry->d_parent != root) { - printk(KERN_ERR "configfs: Tried to unregister non-subsystem!\n"); + pr_err("Tried to unregister non-subsystem!\n"); return; } @@ -1709,7 +1709,7 @@ void configfs_unregister_subsystem(struct configfs_subsystem *subsys) mutex_lock(&configfs_symlink_mutex); spin_lock(&configfs_dirent_lock); if (configfs_detach_prep(dentry, NULL)) { - printk(KERN_ERR "configfs: Tried to unregister non-empty subsystem!\n"); + pr_err("Tried to unregister non-empty subsystem!\n"); } spin_unlock(&configfs_dirent_lock); mutex_unlock(&configfs_symlink_mutex); diff --git a/fs/configfs/inode.c b/fs/configfs/inode.c index a9d35b0e06cf..5946ad98053f 100644 --- a/fs/configfs/inode.c +++ b/fs/configfs/inode.c @@ -168,9 +168,8 @@ static void configfs_set_inode_lock_class(struct configfs_dirent *sd, * In practice the maximum level of locking depth is * already reached. Just inform about possible reasons. */ - printk(KERN_INFO "configfs: Too many levels of inodes" - " for the locking correctness validator.\n"); - printk(KERN_INFO "Spurious warnings may appear.\n"); + pr_info("Too many levels of inodes for the locking correctness validator.\n"); + pr_info("Spurious warnings may appear.\n"); } } } diff --git a/fs/configfs/item.c b/fs/configfs/item.c index 50cee7f9110b..e65f9ffbb999 100644 --- a/fs/configfs/item.c +++ b/fs/configfs/item.c @@ -19,7 +19,7 @@ * Boston, MA 021110-1307, USA. * * Based on kobject: - * kobject is Copyright (c) 2002-2003 Patrick Mochel + * kobject is Copyright (c) 2002-2003 Patrick Mochel * * configfs Copyright (C) 2005 Oracle. All rights reserved. * @@ -35,9 +35,9 @@ #include <linux/configfs.h> -static inline struct config_item * to_item(struct list_head * entry) +static inline struct config_item *to_item(struct list_head *entry) { - return container_of(entry,struct config_item,ci_entry); + return container_of(entry, struct config_item, ci_entry); } /* Evil kernel */ @@ -47,34 +47,35 @@ static void config_item_release(struct kref *kref); * config_item_init - initialize item. * @item: item in question. */ -void config_item_init(struct config_item * item) +void config_item_init(struct config_item *item) { kref_init(&item->ci_kref); INIT_LIST_HEAD(&item->ci_entry); } +EXPORT_SYMBOL(config_item_init); /** * config_item_set_name - Set the name of an item * @item: item. - * @name: name. + * @fmt: The vsnprintf()'s format string. * * If strlen(name) >= CONFIGFS_ITEM_NAME_LEN, then use a * dynamically allocated string that @item->ci_name points to. * Otherwise, use the static @item->ci_namebuf array. */ -int config_item_set_name(struct config_item * item, const char * fmt, ...) +int config_item_set_name(struct config_item *item, const char *fmt, ...) { int error = 0; int limit = CONFIGFS_ITEM_NAME_LEN; int need; va_list args; - char * name; + char *name; /* * First, try the static array */ - va_start(args,fmt); - need = vsnprintf(item->ci_namebuf,limit,fmt,args); + va_start(args, fmt); + need = vsnprintf(item->ci_namebuf, limit, fmt, args); va_end(args); if (need < limit) name = item->ci_namebuf; @@ -83,13 +84,13 @@ int config_item_set_name(struct config_item * item, const char * fmt, ...) * Need more space? Allocate it and try again */ limit = need + 1; - name = kmalloc(limit,GFP_KERNEL); + name = kmalloc(limit, GFP_KERNEL); if (!name) { error = -ENOMEM; goto Done; } - va_start(args,fmt); - need = vsnprintf(name,limit,fmt,args); + va_start(args, fmt); + need = vsnprintf(name, limit, fmt, args); va_end(args); /* Still? Give up. */ @@ -109,7 +110,6 @@ int config_item_set_name(struct config_item * item, const char * fmt, ...) Done: return error; } - EXPORT_SYMBOL(config_item_set_name); void config_item_init_type_name(struct config_item *item, @@ -131,20 +131,21 @@ void config_group_init_type_name(struct config_group *group, const char *name, } EXPORT_SYMBOL(config_group_init_type_name); -struct config_item * config_item_get(struct config_item * item) +struct config_item *config_item_get(struct config_item *item) { if (item) kref_get(&item->ci_kref); return item; } +EXPORT_SYMBOL(config_item_get); -static void config_item_cleanup(struct config_item * item) +static void config_item_cleanup(struct config_item *item) { - struct config_item_type * t = item->ci_type; - struct config_group * s = item->ci_group; - struct config_item * parent = item->ci_parent; + struct config_item_type *t = item->ci_type; + struct config_group *s = item->ci_group; + struct config_item *parent = item->ci_parent; - pr_debug("config_item %s: cleaning up\n",config_item_name(item)); + pr_debug("config_item %s: cleaning up\n", config_item_name(item)); if (item->ci_name != item->ci_namebuf) kfree(item->ci_name); item->ci_name = NULL; @@ -167,21 +168,23 @@ static void config_item_release(struct kref *kref) * * Decrement the refcount, and if 0, call config_item_cleanup(). */ -void config_item_put(struct config_item * item) +void config_item_put(struct config_item *item) { if (item) kref_put(&item->ci_kref, config_item_release); } +EXPORT_SYMBOL(config_item_put); /** * config_group_init - initialize a group for use - * @k: group + * @group: config_group */ void config_group_init(struct config_group *group) { config_item_init(&group->cg_item); INIT_LIST_HEAD(&group->cg_children); } +EXPORT_SYMBOL(config_group_init); /** * config_group_find_item - search for item in group. @@ -195,11 +198,11 @@ void config_group_init(struct config_group *group) struct config_item *config_group_find_item(struct config_group *group, const char *name) { - struct list_head * entry; - struct config_item * ret = NULL; + struct list_head *entry; + struct config_item *ret = NULL; - list_for_each(entry,&group->cg_children) { - struct config_item * item = to_item(entry); + list_for_each(entry, &group->cg_children) { + struct config_item *item = to_item(entry); if (config_item_name(item) && !strcmp(config_item_name(item), name)) { ret = config_item_get(item); @@ -208,9 +211,4 @@ struct config_item *config_group_find_item(struct config_group *group, } return ret; } - -EXPORT_SYMBOL(config_item_init); -EXPORT_SYMBOL(config_group_init); -EXPORT_SYMBOL(config_item_get); -EXPORT_SYMBOL(config_item_put); EXPORT_SYMBOL(config_group_find_item); diff --git a/fs/configfs/mount.c b/fs/configfs/mount.c index 7f26c3cf75ae..f6c285833390 100644 --- a/fs/configfs/mount.c +++ b/fs/configfs/mount.c @@ -85,7 +85,7 @@ static int configfs_fill_super(struct super_block *sb, void *data, int silent) /* directory inodes start off with i_nlink == 2 (for "." entry) */ inc_nlink(inode); } else { - pr_debug("configfs: could not get root inode\n"); + pr_debug("could not get root inode\n"); return -ENOMEM; } @@ -155,7 +155,7 @@ static int __init configfs_init(void) return 0; out4: - printk(KERN_ERR "configfs: Unable to register filesystem!\n"); + pr_err("Unable to register filesystem!\n"); configfs_inode_exit(); out3: kobject_put(config_kobj); diff --git a/fs/dcache.c b/fs/dcache.c index be2bea834bf4..1792d6075b4f 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -150,7 +150,7 @@ static long get_nr_dentry_unused(void) return sum < 0 ? 0 : sum; } -int proc_nr_dentry(ctl_table *table, int write, void __user *buffer, +int proc_nr_dentry(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { dentry_stat.nr_dentry = get_nr_dentry(); diff --git a/fs/devpts/inode.c b/fs/devpts/inode.c index c71038079b47..cfe8466f7fef 100644 --- a/fs/devpts/inode.c +++ b/fs/devpts/inode.c @@ -10,6 +10,8 @@ * * ------------------------------------------------------------------------- */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/module.h> #include <linux/init.h> #include <linux/fs.h> @@ -148,10 +150,10 @@ static inline struct super_block *pts_sb_from_inode(struct inode *inode) /* * parse_mount_options(): - * Set @opts to mount options specified in @data. If an option is not - * specified in @data, set it to its default value. The exception is - * 'newinstance' option which can only be set/cleared on a mount (i.e. - * cannot be changed during remount). + * Set @opts to mount options specified in @data. If an option is not + * specified in @data, set it to its default value. The exception is + * 'newinstance' option which can only be set/cleared on a mount (i.e. + * cannot be changed during remount). * * Note: @data may be NULL (in which case all options are set to default). */ @@ -225,7 +227,7 @@ static int parse_mount_options(char *data, int op, struct pts_mount_opts *opts) break; #endif default: - printk(KERN_ERR "devpts: called with bogus options\n"); + pr_err("called with bogus options\n"); return -EINVAL; } } @@ -261,7 +263,7 @@ static int mknod_ptmx(struct super_block *sb) dentry = d_alloc_name(root, "ptmx"); if (!dentry) { - printk(KERN_NOTICE "Unable to alloc dentry for ptmx node\n"); + pr_err("Unable to alloc dentry for ptmx node\n"); goto out; } @@ -270,7 +272,7 @@ static int mknod_ptmx(struct super_block *sb) */ inode = new_inode(sb); if (!inode) { - printk(KERN_ERR "Unable to alloc inode for ptmx node\n"); + pr_err("Unable to alloc inode for ptmx node\n"); dput(dentry); goto out; } @@ -303,7 +305,7 @@ static void update_ptmx_mode(struct pts_fs_info *fsi) #else static inline void update_ptmx_mode(struct pts_fs_info *fsi) { - return; + return; } #endif @@ -333,9 +335,11 @@ static int devpts_show_options(struct seq_file *seq, struct dentry *root) struct pts_mount_opts *opts = &fsi->mount_opts; if (opts->setuid) - seq_printf(seq, ",uid=%u", from_kuid_munged(&init_user_ns, opts->uid)); + seq_printf(seq, ",uid=%u", + from_kuid_munged(&init_user_ns, opts->uid)); if (opts->setgid) - seq_printf(seq, ",gid=%u", from_kgid_munged(&init_user_ns, opts->gid)); + seq_printf(seq, ",gid=%u", + from_kgid_munged(&init_user_ns, opts->gid)); seq_printf(seq, ",mode=%03o", opts->mode); #ifdef CONFIG_DEVPTS_MULTIPLE_INSTANCES seq_printf(seq, ",ptmxmode=%03o", opts->ptmxmode); @@ -396,7 +400,7 @@ devpts_fill_super(struct super_block *s, void *data, int silent) if (s->s_root) return 0; - printk(KERN_ERR "devpts: get root dentry failed\n"); + pr_err("get root dentry failed\n"); fail: return -ENOMEM; diff --git a/fs/dlm/config.c b/fs/dlm/config.c index 76feb4b60fa6..d521bddf876d 100644 --- a/fs/dlm/config.c +++ b/fs/dlm/config.c @@ -157,11 +157,13 @@ static ssize_t cluster_set(struct dlm_cluster *cl, unsigned int *cl_field, const char *buf, size_t len) { unsigned int x; + int rc; if (!capable(CAP_SYS_ADMIN)) return -EPERM; - - x = simple_strtoul(buf, NULL, 0); + rc = kstrtouint(buf, 0, &x); + if (rc) + return rc; if (check_zero && !x) return -EINVAL; @@ -730,7 +732,10 @@ static ssize_t comm_nodeid_read(struct dlm_comm *cm, char *buf) static ssize_t comm_nodeid_write(struct dlm_comm *cm, const char *buf, size_t len) { - cm->nodeid = simple_strtol(buf, NULL, 0); + int rc = kstrtoint(buf, 0, &cm->nodeid); + + if (rc) + return rc; return len; } @@ -742,7 +747,10 @@ static ssize_t comm_local_read(struct dlm_comm *cm, char *buf) static ssize_t comm_local_write(struct dlm_comm *cm, const char *buf, size_t len) { - cm->local= simple_strtol(buf, NULL, 0); + int rc = kstrtoint(buf, 0, &cm->local); + + if (rc) + return rc; if (cm->local && !local_comm) local_comm = cm; return len; @@ -846,7 +854,10 @@ static ssize_t node_nodeid_write(struct dlm_node *nd, const char *buf, size_t len) { uint32_t seq = 0; - nd->nodeid = simple_strtol(buf, NULL, 0); + int rc = kstrtoint(buf, 0, &nd->nodeid); + + if (rc) + return rc; dlm_comm_seq(nd->nodeid, &seq); nd->comm_seq = seq; return len; @@ -860,7 +871,10 @@ static ssize_t node_weight_read(struct dlm_node *nd, char *buf) static ssize_t node_weight_write(struct dlm_node *nd, const char *buf, size_t len) { - nd->weight = simple_strtol(buf, NULL, 0); + int rc = kstrtoint(buf, 0, &nd->weight); + + if (rc) + return rc; return len; } diff --git a/fs/dlm/debug_fs.c b/fs/dlm/debug_fs.c index b969deef9ebb..8d77ba7b1756 100644 --- a/fs/dlm/debug_fs.c +++ b/fs/dlm/debug_fs.c @@ -68,7 +68,7 @@ static int print_format1_lock(struct seq_file *s, struct dlm_lkb *lkb, if (lkb->lkb_wait_type) seq_printf(s, " wait_type: %d", lkb->lkb_wait_type); - return seq_printf(s, "\n"); + return seq_puts(s, "\n"); } static int print_format1(struct dlm_rsb *res, struct seq_file *s) @@ -92,31 +92,31 @@ static int print_format1(struct dlm_rsb *res, struct seq_file *s) } if (res->res_nodeid > 0) - rv = seq_printf(s, "\" \nLocal Copy, Master is node %d\n", + rv = seq_printf(s, "\"\nLocal Copy, Master is node %d\n", res->res_nodeid); else if (res->res_nodeid == 0) - rv = seq_printf(s, "\" \nMaster Copy\n"); + rv = seq_puts(s, "\"\nMaster Copy\n"); else if (res->res_nodeid == -1) - rv = seq_printf(s, "\" \nLooking up master (lkid %x)\n", + rv = seq_printf(s, "\"\nLooking up master (lkid %x)\n", res->res_first_lkid); else - rv = seq_printf(s, "\" \nInvalid master %d\n", + rv = seq_printf(s, "\"\nInvalid master %d\n", res->res_nodeid); if (rv) goto out; /* Print the LVB: */ if (res->res_lvbptr) { - seq_printf(s, "LVB: "); + seq_puts(s, "LVB: "); for (i = 0; i < lvblen; i++) { if (i == lvblen / 2) - seq_printf(s, "\n "); + seq_puts(s, "\n "); seq_printf(s, "%02x ", (unsigned char) res->res_lvbptr[i]); } if (rsb_flag(res, RSB_VALNOTVALID)) - seq_printf(s, " (INVALID)"); - rv = seq_printf(s, "\n"); + seq_puts(s, " (INVALID)"); + rv = seq_puts(s, "\n"); if (rv) goto out; } @@ -133,21 +133,21 @@ static int print_format1(struct dlm_rsb *res, struct seq_file *s) } /* Print the locks attached to this resource */ - seq_printf(s, "Granted Queue\n"); + seq_puts(s, "Granted Queue\n"); list_for_each_entry(lkb, &res->res_grantqueue, lkb_statequeue) { rv = print_format1_lock(s, lkb, res); if (rv) goto out; } - seq_printf(s, "Conversion Queue\n"); + seq_puts(s, "Conversion Queue\n"); list_for_each_entry(lkb, &res->res_convertqueue, lkb_statequeue) { rv = print_format1_lock(s, lkb, res); if (rv) goto out; } - seq_printf(s, "Waiting Queue\n"); + seq_puts(s, "Waiting Queue\n"); list_for_each_entry(lkb, &res->res_waitqueue, lkb_statequeue) { rv = print_format1_lock(s, lkb, res); if (rv) @@ -157,13 +157,13 @@ static int print_format1(struct dlm_rsb *res, struct seq_file *s) if (list_empty(&res->res_lookup)) goto out; - seq_printf(s, "Lookup Queue\n"); + seq_puts(s, "Lookup Queue\n"); list_for_each_entry(lkb, &res->res_lookup, lkb_rsb_lookup) { rv = seq_printf(s, "%08x %s", lkb->lkb_id, print_lockmode(lkb->lkb_rqmode)); if (lkb->lkb_wait_type) seq_printf(s, " wait_type: %d", lkb->lkb_wait_type); - rv = seq_printf(s, "\n"); + rv = seq_puts(s, "\n"); } out: unlock_rsb(res); @@ -300,7 +300,7 @@ static int print_format3(struct dlm_rsb *r, struct seq_file *s) else seq_printf(s, " %02x", (unsigned char)r->res_name[i]); } - rv = seq_printf(s, "\n"); + rv = seq_puts(s, "\n"); if (rv) goto out; @@ -311,7 +311,7 @@ static int print_format3(struct dlm_rsb *r, struct seq_file *s) for (i = 0; i < lvblen; i++) seq_printf(s, " %02x", (unsigned char)r->res_lvbptr[i]); - rv = seq_printf(s, "\n"); + rv = seq_puts(s, "\n"); if (rv) goto out; @@ -377,7 +377,7 @@ static int print_format4(struct dlm_rsb *r, struct seq_file *s) else seq_printf(s, " %02x", (unsigned char)r->res_name[i]); } - rv = seq_printf(s, "\n"); + rv = seq_puts(s, "\n"); out: unlock_rsb(r); return rv; diff --git a/fs/dlm/lockspace.c b/fs/dlm/lockspace.c index 04d6398c1f1c..f3e72787e7f9 100644 --- a/fs/dlm/lockspace.c +++ b/fs/dlm/lockspace.c @@ -35,8 +35,11 @@ static struct task_struct * scand_task; static ssize_t dlm_control_store(struct dlm_ls *ls, const char *buf, size_t len) { ssize_t ret = len; - int n = simple_strtol(buf, NULL, 0); + int n; + int rc = kstrtoint(buf, 0, &n); + if (rc) + return rc; ls = dlm_find_lockspace_local(ls->ls_local_handle); if (!ls) return -EINVAL; @@ -57,7 +60,10 @@ static ssize_t dlm_control_store(struct dlm_ls *ls, const char *buf, size_t len) static ssize_t dlm_event_store(struct dlm_ls *ls, const char *buf, size_t len) { - ls->ls_uevent_result = simple_strtol(buf, NULL, 0); + int rc = kstrtoint(buf, 0, &ls->ls_uevent_result); + + if (rc) + return rc; set_bit(LSFL_UEVENT_WAIT, &ls->ls_flags); wake_up(&ls->ls_uevent_wait); return len; @@ -70,7 +76,10 @@ static ssize_t dlm_id_show(struct dlm_ls *ls, char *buf) static ssize_t dlm_id_store(struct dlm_ls *ls, const char *buf, size_t len) { - ls->ls_global_id = simple_strtoul(buf, NULL, 0); + int rc = kstrtouint(buf, 0, &ls->ls_global_id); + + if (rc) + return rc; return len; } @@ -81,7 +90,11 @@ static ssize_t dlm_nodir_show(struct dlm_ls *ls, char *buf) static ssize_t dlm_nodir_store(struct dlm_ls *ls, const char *buf, size_t len) { - int val = simple_strtoul(buf, NULL, 0); + int val; + int rc = kstrtoint(buf, 0, &val); + + if (rc) + return rc; if (val == 1) set_bit(LSFL_NODIR, &ls->ls_flags); return len; diff --git a/fs/drop_caches.c b/fs/drop_caches.c index 9280202e488c..1de7294aad20 100644 --- a/fs/drop_caches.c +++ b/fs/drop_caches.c @@ -50,7 +50,7 @@ static void drop_slab(void) } while (nr_objects > 10); } -int drop_caches_sysctl_handler(ctl_table *table, int write, +int drop_caches_sysctl_handler(struct ctl_table *table, int write, void __user *buffer, size_t *length, loff_t *ppos) { int ret; diff --git a/fs/efivarfs/super.c b/fs/efivarfs/super.c index becc725a1953..0a48886e069c 100644 --- a/fs/efivarfs/super.c +++ b/fs/efivarfs/super.c @@ -83,7 +83,7 @@ static int efivarfs_d_hash(const struct dentry *dentry, struct qstr *qstr) return 0; } -static struct dentry_operations efivarfs_d_ops = { +static const struct dentry_operations efivarfs_d_ops = { .d_compare = efivarfs_d_compare, .d_hash = efivarfs_d_hash, .d_delete = always_delete_dentry, diff --git a/fs/efs/dir.c b/fs/efs/dir.c index b72307ccdf7a..ce63b24f7c3e 100644 --- a/fs/efs/dir.c +++ b/fs/efs/dir.c @@ -26,7 +26,8 @@ static int efs_readdir(struct file *file, struct dir_context *ctx) int slot; if (inode->i_size & (EFS_DIRBSIZE-1)) - printk(KERN_WARNING "EFS: WARNING: readdir(): directory size not a multiple of EFS_DIRBSIZE\n"); + pr_warn("%s(): directory size not a multiple of EFS_DIRBSIZE\n", + __func__); /* work out where this entry can be found */ block = ctx->pos >> EFS_DIRBSIZE_BITS; @@ -43,14 +44,15 @@ static int efs_readdir(struct file *file, struct dir_context *ctx) bh = sb_bread(inode->i_sb, efs_bmap(inode, block)); if (!bh) { - printk(KERN_ERR "EFS: readdir(): failed to read dir block %d\n", block); + pr_err("%s(): failed to read dir block %d\n", + __func__, block); break; } dirblock = (struct efs_dir *) bh->b_data; if (be16_to_cpu(dirblock->magic) != EFS_DIRBLK_MAGIC) { - printk(KERN_ERR "EFS: readdir(): invalid directory block\n"); + pr_err("%s(): invalid directory block\n", __func__); brelse(bh); break; } @@ -69,10 +71,9 @@ static int efs_readdir(struct file *file, struct dir_context *ctx) inodenum = be32_to_cpu(dirslot->inode); namelen = dirslot->namelen; nameptr = dirslot->name; - -#ifdef DEBUG - printk(KERN_DEBUG "EFS: readdir(): block %d slot %d/%d: inode %u, name \"%s\", namelen %u\n", block, slot, dirblock->slots-1, inodenum, nameptr, namelen); -#endif + pr_debug("%s(): block %d slot %d/%d: inode %u, name \"%s\", namelen %u\n", + __func__, block, slot, dirblock->slots-1, + inodenum, nameptr, namelen); if (!namelen) continue; /* found the next entry */ @@ -80,7 +81,8 @@ static int efs_readdir(struct file *file, struct dir_context *ctx) /* sanity check */ if (nameptr - (char *) dirblock + namelen > EFS_DIRBSIZE) { - printk(KERN_WARNING "EFS: directory entry %d exceeds directory block\n", slot); + pr_warn("directory entry %d exceeds directory block\n", + slot); continue; } diff --git a/fs/efs/efs.h b/fs/efs/efs.h index 5528926ac7f6..5bbf9612140c 100644 --- a/fs/efs/efs.h +++ b/fs/efs/efs.h @@ -7,6 +7,12 @@ #ifndef _EFS_EFS_H_ #define _EFS_EFS_H_ +#ifdef pr_fmt +#undef pr_fmt +#endif + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/fs.h> #include <asm/uaccess.h> diff --git a/fs/efs/file.c b/fs/efs/file.c index 1ccb364ffa63..a37dcee46866 100644 --- a/fs/efs/file.c +++ b/fs/efs/file.c @@ -22,10 +22,8 @@ int efs_get_block(struct inode *inode, sector_t iblock, /* * i have no idea why this happens as often as it does */ - printk(KERN_WARNING "EFS: bmap(): block %d >= %ld (filesize %ld)\n", - block, - inode->i_blocks, - inode->i_size); + pr_warn("%s(): block %d >= %ld (filesize %ld)\n", + __func__, block, inode->i_blocks, inode->i_size); #endif return 0; } @@ -38,7 +36,7 @@ int efs_get_block(struct inode *inode, sector_t iblock, int efs_bmap(struct inode *inode, efs_block_t block) { if (block < 0) { - printk(KERN_WARNING "EFS: bmap(): block < 0\n"); + pr_warn("%s(): block < 0\n", __func__); return 0; } @@ -48,10 +46,8 @@ int efs_bmap(struct inode *inode, efs_block_t block) { /* * i have no idea why this happens as often as it does */ - printk(KERN_WARNING "EFS: bmap(): block %d >= %ld (filesize %ld)\n", - block, - inode->i_blocks, - inode->i_size); + pr_warn("%s(): block %d >= %ld (filesize %ld)\n", + __func__, block, inode->i_blocks, inode->i_size); #endif return 0; } diff --git a/fs/efs/inode.c b/fs/efs/inode.c index d15ccf20f1b3..079d20306ee1 100644 --- a/fs/efs/inode.c +++ b/fs/efs/inode.c @@ -89,7 +89,7 @@ struct inode *efs_iget(struct super_block *super, unsigned long ino) bh = sb_bread(inode->i_sb, block); if (!bh) { - printk(KERN_WARNING "EFS: bread() failed at block %d\n", block); + pr_warn("%s() failed at block %d\n", __func__, block); goto read_inode_error; } @@ -130,19 +130,16 @@ struct inode *efs_iget(struct super_block *super, unsigned long ino) for(i = 0; i < EFS_DIRECTEXTENTS; i++) { extent_copy(&(efs_inode->di_u.di_extents[i]), &(in->extents[i])); if (i < in->numextents && in->extents[i].cooked.ex_magic != 0) { - printk(KERN_WARNING "EFS: extent %d has bad magic number in inode %lu\n", i, inode->i_ino); + pr_warn("extent %d has bad magic number in inode %lu\n", + i, inode->i_ino); brelse(bh); goto read_inode_error; } } brelse(bh); - -#ifdef DEBUG - printk(KERN_DEBUG "EFS: efs_iget(): inode %lu, extents %d, mode %o\n", - inode->i_ino, in->numextents, inode->i_mode); -#endif - + pr_debug("efs_iget(): inode %lu, extents %d, mode %o\n", + inode->i_ino, in->numextents, inode->i_mode); switch (inode->i_mode & S_IFMT) { case S_IFDIR: inode->i_op = &efs_dir_inode_operations; @@ -162,7 +159,7 @@ struct inode *efs_iget(struct super_block *super, unsigned long ino) init_special_inode(inode, inode->i_mode, device); break; default: - printk(KERN_WARNING "EFS: unsupported inode mode %o\n", inode->i_mode); + pr_warn("unsupported inode mode %o\n", inode->i_mode); goto read_inode_error; break; } @@ -171,7 +168,7 @@ struct inode *efs_iget(struct super_block *super, unsigned long ino) return inode; read_inode_error: - printk(KERN_WARNING "EFS: failed to read inode %lu\n", inode->i_ino); + pr_warn("failed to read inode %lu\n", inode->i_ino); iget_failed(inode); return ERR_PTR(-EIO); } @@ -216,7 +213,7 @@ efs_block_t efs_map_block(struct inode *inode, efs_block_t block) { /* if we only have one extent then nothing can be found */ if (in->numextents == 1) { - printk(KERN_ERR "EFS: map_block() failed to map (1 extent)\n"); + pr_err("%s() failed to map (1 extent)\n", __func__); return 0; } @@ -234,13 +231,12 @@ efs_block_t efs_map_block(struct inode *inode, efs_block_t block) { } } - printk(KERN_ERR "EFS: map_block() failed to map block %u (dir)\n", block); + pr_err("%s() failed to map block %u (dir)\n", __func__, block); return 0; } -#ifdef DEBUG - printk(KERN_DEBUG "EFS: map_block(): indirect search for logical block %u\n", block); -#endif + pr_debug("%s(): indirect search for logical block %u\n", + __func__, block); direxts = in->extents[0].cooked.ex_offset; indexts = in->numextents; @@ -262,7 +258,8 @@ efs_block_t efs_map_block(struct inode *inode, efs_block_t block) { if (dirext == direxts) { /* should never happen */ - printk(KERN_ERR "EFS: couldn't find direct extent for indirect extent %d (block %u)\n", cur, block); + pr_err("couldn't find direct extent for indirect extent %d (block %u)\n", + cur, block); if (bh) brelse(bh); return 0; } @@ -279,12 +276,12 @@ efs_block_t efs_map_block(struct inode *inode, efs_block_t block) { bh = sb_bread(inode->i_sb, iblock); if (!bh) { - printk(KERN_ERR "EFS: bread() failed at block %d\n", iblock); + pr_err("%s() failed at block %d\n", + __func__, iblock); return 0; } -#ifdef DEBUG - printk(KERN_DEBUG "EFS: map_block(): read indirect extent block %d\n", iblock); -#endif + pr_debug("%s(): read indirect extent block %d\n", + __func__, iblock); first = 0; lastblock = iblock; } @@ -294,7 +291,8 @@ efs_block_t efs_map_block(struct inode *inode, efs_block_t block) { extent_copy(&(exts[ioffset]), &ext); if (ext.cooked.ex_magic != 0) { - printk(KERN_ERR "EFS: extent %d has bad magic number in block %d\n", cur, iblock); + pr_err("extent %d has bad magic number in block %d\n", + cur, iblock); if (bh) brelse(bh); return 0; } @@ -306,7 +304,7 @@ efs_block_t efs_map_block(struct inode *inode, efs_block_t block) { } } if (bh) brelse(bh); - printk(KERN_ERR "EFS: map_block() failed to map block %u (indir)\n", block); + pr_err("%s() failed to map block %u (indir)\n", __func__, block); return 0; } diff --git a/fs/efs/namei.c b/fs/efs/namei.c index 96f66d213a19..356c044e2cd3 100644 --- a/fs/efs/namei.c +++ b/fs/efs/namei.c @@ -23,20 +23,22 @@ static efs_ino_t efs_find_entry(struct inode *inode, const char *name, int len) efs_block_t block; if (inode->i_size & (EFS_DIRBSIZE-1)) - printk(KERN_WARNING "EFS: WARNING: find_entry(): directory size not a multiple of EFS_DIRBSIZE\n"); + pr_warn("%s(): directory size not a multiple of EFS_DIRBSIZE\n", + __func__); for(block = 0; block < inode->i_blocks; block++) { bh = sb_bread(inode->i_sb, efs_bmap(inode, block)); if (!bh) { - printk(KERN_ERR "EFS: find_entry(): failed to read dir block %d\n", block); + pr_err("%s(): failed to read dir block %d\n", + __func__, block); return 0; } dirblock = (struct efs_dir *) bh->b_data; if (be16_to_cpu(dirblock->magic) != EFS_DIRBLK_MAGIC) { - printk(KERN_ERR "EFS: find_entry(): invalid directory block\n"); + pr_err("%s(): invalid directory block\n", __func__); brelse(bh); return(0); } diff --git a/fs/efs/super.c b/fs/efs/super.c index 3befcc9f5d63..7fca462ea4e3 100644 --- a/fs/efs/super.c +++ b/fs/efs/super.c @@ -134,7 +134,7 @@ static const struct export_operations efs_export_ops = { static int __init init_efs_fs(void) { int err; - printk("EFS: "EFS_VERSION" - http://aeschi.ch.eu.org/efs/\n"); + pr_info(EFS_VERSION" - http://aeschi.ch.eu.org/efs/\n"); err = init_inodecache(); if (err) goto out1; @@ -179,12 +179,12 @@ static efs_block_t efs_validate_vh(struct volume_header *vh) { csum += be32_to_cpu(cs); } if (csum) { - printk(KERN_INFO "EFS: SGI disklabel: checksum bad, label corrupted\n"); + pr_warn("SGI disklabel: checksum bad, label corrupted\n"); return 0; } #ifdef DEBUG - printk(KERN_DEBUG "EFS: bf: \"%16s\"\n", vh->vh_bootfile); + pr_debug("bf: \"%16s\"\n", vh->vh_bootfile); for(i = 0; i < NVDIR; i++) { int j; @@ -196,9 +196,8 @@ static efs_block_t efs_validate_vh(struct volume_header *vh) { name[j] = (char) 0; if (name[0]) { - printk(KERN_DEBUG "EFS: vh: %8s block: 0x%08x size: 0x%08x\n", - name, - (int) be32_to_cpu(vh->vh_vd[i].vd_lbn), + pr_debug("vh: %8s block: 0x%08x size: 0x%08x\n", + name, (int) be32_to_cpu(vh->vh_vd[i].vd_lbn), (int) be32_to_cpu(vh->vh_vd[i].vd_nbytes)); } } @@ -211,12 +210,11 @@ static efs_block_t efs_validate_vh(struct volume_header *vh) { } #ifdef DEBUG if (be32_to_cpu(vh->vh_pt[i].pt_nblks)) { - printk(KERN_DEBUG "EFS: pt %2d: start: %08d size: %08d type: 0x%02x (%s)\n", - i, - (int) be32_to_cpu(vh->vh_pt[i].pt_firstlbn), - (int) be32_to_cpu(vh->vh_pt[i].pt_nblks), - pt_type, - (pt_entry->pt_name) ? pt_entry->pt_name : "unknown"); + pr_debug("pt %2d: start: %08d size: %08d type: 0x%02x (%s)\n", + i, (int)be32_to_cpu(vh->vh_pt[i].pt_firstlbn), + (int)be32_to_cpu(vh->vh_pt[i].pt_nblks), + pt_type, (pt_entry->pt_name) ? + pt_entry->pt_name : "unknown"); } #endif if (IS_EFS(pt_type)) { @@ -226,11 +224,10 @@ static efs_block_t efs_validate_vh(struct volume_header *vh) { } if (slice == -1) { - printk(KERN_NOTICE "EFS: partition table contained no EFS partitions\n"); + pr_notice("partition table contained no EFS partitions\n"); #ifdef DEBUG } else { - printk(KERN_INFO "EFS: using slice %d (type %s, offset 0x%x)\n", - slice, + pr_info("using slice %d (type %s, offset 0x%x)\n", slice, (pt_entry->pt_name) ? pt_entry->pt_name : "unknown", sblock); #endif @@ -268,7 +265,7 @@ static int efs_fill_super(struct super_block *s, void *d, int silent) s->s_magic = EFS_SUPER_MAGIC; if (!sb_set_blocksize(s, EFS_BLOCKSIZE)) { - printk(KERN_ERR "EFS: device does not support %d byte blocks\n", + pr_err("device does not support %d byte blocks\n", EFS_BLOCKSIZE); return -EINVAL; } @@ -277,7 +274,7 @@ static int efs_fill_super(struct super_block *s, void *d, int silent) bh = sb_bread(s, 0); if (!bh) { - printk(KERN_ERR "EFS: cannot read volume header\n"); + pr_err("cannot read volume header\n"); return -EINVAL; } @@ -295,13 +292,14 @@ static int efs_fill_super(struct super_block *s, void *d, int silent) bh = sb_bread(s, sb->fs_start + EFS_SUPER); if (!bh) { - printk(KERN_ERR "EFS: cannot read superblock\n"); + pr_err("cannot read superblock\n"); return -EINVAL; } if (efs_validate_super(sb, (struct efs_super *) bh->b_data)) { #ifdef DEBUG - printk(KERN_WARNING "EFS: invalid superblock at block %u\n", sb->fs_start + EFS_SUPER); + pr_warn("invalid superblock at block %u\n", + sb->fs_start + EFS_SUPER); #endif brelse(bh); return -EINVAL; @@ -310,7 +308,7 @@ static int efs_fill_super(struct super_block *s, void *d, int silent) if (!(s->s_flags & MS_RDONLY)) { #ifdef DEBUG - printk(KERN_INFO "EFS: forcing read-only mode\n"); + pr_info("forcing read-only mode\n"); #endif s->s_flags |= MS_RDONLY; } @@ -318,13 +316,13 @@ static int efs_fill_super(struct super_block *s, void *d, int silent) s->s_export_op = &efs_export_ops; root = efs_iget(s, EFS_ROOTINODE); if (IS_ERR(root)) { - printk(KERN_ERR "EFS: get root inode failed\n"); + pr_err("get root inode failed\n"); return PTR_ERR(root); } s->s_root = d_make_root(root); if (!(s->s_root)) { - printk(KERN_ERR "EFS: get root dentry failed\n"); + pr_err("get root dentry failed\n"); return -ENOMEM; } diff --git a/fs/eventpoll.c b/fs/eventpoll.c index af903128891c..b73e0621ce9e 100644 --- a/fs/eventpoll.c +++ b/fs/eventpoll.c @@ -293,7 +293,7 @@ static LIST_HEAD(tfile_check_list); static long zero; static long long_max = LONG_MAX; -ctl_table epoll_table[] = { +struct ctl_table epoll_table[] = { { .procname = "max_user_watches", .data = &max_user_watches, diff --git a/fs/exofs/Kconfig.ore b/fs/exofs/Kconfig.ore index 1ca7fb7b6ba8..2daf2329c28d 100644 --- a/fs/exofs/Kconfig.ore +++ b/fs/exofs/Kconfig.ore @@ -9,4 +9,6 @@ config ORE tristate depends on EXOFS_FS || PNFS_OBJLAYOUT select ASYNC_XOR + select RAID6_PQ + select ASYNC_PQ default SCSI_OSD_ULD diff --git a/fs/exofs/ore.c b/fs/exofs/ore.c index dae884694bd9..cfc0205d62c4 100644 --- a/fs/exofs/ore.c +++ b/fs/exofs/ore.c @@ -58,9 +58,12 @@ int ore_verify_layout(unsigned total_comps, struct ore_layout *layout) layout->parity = 1; break; case PNFS_OSD_RAID_PQ: + layout->parity = 2; + break; case PNFS_OSD_RAID_4: default: - ORE_ERR("Only RAID_0/5 for now\n"); + ORE_ERR("Only RAID_0/5/6 for now received-enum=%d\n", + layout->raid_algorithm); return -EINVAL; } if (0 != (layout->stripe_unit & ~PAGE_MASK)) { @@ -112,6 +115,8 @@ int ore_verify_layout(unsigned total_comps, struct ore_layout *layout) layout->max_io_length /= stripe_length; layout->max_io_length *= stripe_length; } + ORE_DBGMSG("max_io_length=0x%lx\n", layout->max_io_length); + return 0; } EXPORT_SYMBOL(ore_verify_layout); @@ -545,21 +550,24 @@ void ore_calc_stripe_info(struct ore_layout *layout, u64 file_offset, /* "H - (N * U)" is just "H % U" so it's bound to u32 */ u32 C = (u32)(H - (N * U)) / stripe_unit + G * group_width; + u32 first_dev = C - C % group_width; div_u64_rem(file_offset, stripe_unit, &si->unit_off); si->obj_offset = si->unit_off + (N * stripe_unit) + (M * group_depth * stripe_unit); + si->cur_comp = C - first_dev; + si->cur_pg = si->unit_off / PAGE_SIZE; if (parity) { u32 LCMdP = lcm(group_width, parity) / parity; /* R = N % LCMdP; */ u32 RxP = (N % LCMdP) * parity; - u32 first_dev = C - C % group_width; si->par_dev = (group_width + group_width - parity - RxP) % group_width + first_dev; - si->dev = (group_width + C - RxP) % group_width + first_dev; + si->dev = (group_width + group_width + C - RxP) % + group_width + first_dev; si->bytes_in_stripe = U; si->first_stripe_start = M * S + G * T + N * U; } else { @@ -649,6 +657,43 @@ out: /* we fail the complete unit on an error eg don't advance return ret; } +static int _add_parity_units(struct ore_io_state *ios, + struct ore_striping_info *si, + unsigned dev, unsigned first_dev, + unsigned mirrors_p1, unsigned devs_in_group, + unsigned cur_len) +{ + unsigned do_parity; + int ret = 0; + + for (do_parity = ios->layout->parity; do_parity; --do_parity) { + struct ore_per_dev_state *per_dev; + + per_dev = &ios->per_dev[dev - first_dev]; + if (!per_dev->length && !per_dev->offset) { + /* Only/always the parity unit of the first + * stripe will be empty. So this is a chance to + * initialize the per_dev info. + */ + per_dev->dev = dev; + per_dev->offset = si->obj_offset - si->unit_off; + } + + ret = _ore_add_parity_unit(ios, si, per_dev, cur_len, + do_parity == 1); + if (unlikely(ret)) + break; + + if (do_parity != 1) { + dev = ((dev + mirrors_p1) % devs_in_group) + first_dev; + si->cur_comp = (si->cur_comp + 1) % + ios->layout->group_width; + } + } + + return ret; +} + static int _prepare_for_striping(struct ore_io_state *ios) { struct ore_striping_info *si = &ios->si; @@ -658,7 +703,6 @@ static int _prepare_for_striping(struct ore_io_state *ios) unsigned devs_in_group = group_width * mirrors_p1; unsigned dev = si->dev; unsigned first_dev = dev - (dev % devs_in_group); - unsigned dev_order; unsigned cur_pg = ios->pages_consumed; u64 length = ios->length; int ret = 0; @@ -670,16 +714,13 @@ static int _prepare_for_striping(struct ore_io_state *ios) BUG_ON(length > si->length); - dev_order = _dev_order(devs_in_group, mirrors_p1, si->par_dev, dev); - si->cur_comp = dev_order; - si->cur_pg = si->unit_off / PAGE_SIZE; - while (length) { - unsigned comp = dev - first_dev; - struct ore_per_dev_state *per_dev = &ios->per_dev[comp]; + struct ore_per_dev_state *per_dev = + &ios->per_dev[dev - first_dev]; unsigned cur_len, page_off = 0; - if (!per_dev->length) { + if (!per_dev->length && !per_dev->offset) { + /* First time initialize the per_dev info. */ per_dev->dev = dev; if (dev == si->dev) { WARN_ON(dev == si->par_dev); @@ -688,13 +729,7 @@ static int _prepare_for_striping(struct ore_io_state *ios) page_off = si->unit_off & ~PAGE_MASK; BUG_ON(page_off && (page_off != ios->pgbase)); } else { - if (si->cur_comp > dev_order) - per_dev->offset = - si->obj_offset - si->unit_off; - else /* si->cur_comp < dev_order */ - per_dev->offset = - si->obj_offset + stripe_unit - - si->unit_off; + per_dev->offset = si->obj_offset - si->unit_off; cur_len = stripe_unit; } } else { @@ -708,11 +743,9 @@ static int _prepare_for_striping(struct ore_io_state *ios) if (unlikely(ret)) goto out; - dev += mirrors_p1; - dev = (dev % devs_in_group) + first_dev; - length -= cur_len; + dev = ((dev + mirrors_p1) % devs_in_group) + first_dev; si->cur_comp = (si->cur_comp + 1) % group_width; if (unlikely((dev == si->par_dev) || (!length && ios->sp2d))) { if (!length && ios->sp2d) { @@ -720,23 +753,16 @@ static int _prepare_for_striping(struct ore_io_state *ios) * stripe. then operate on parity dev. */ dev = si->par_dev; - } - if (ios->sp2d) - /* In writes cur_len just means if it's the - * last one. See _ore_add_parity_unit. - */ - cur_len = length; - per_dev = &ios->per_dev[dev - first_dev]; - if (!per_dev->length) { - /* Only/always the parity unit of the first - * stripe will be empty. So this is a chance to - * initialize the per_dev info. - */ - per_dev->dev = dev; - per_dev->offset = si->obj_offset - si->unit_off; + /* If last stripe operate on parity comp */ + si->cur_comp = group_width - ios->layout->parity; } - ret = _ore_add_parity_unit(ios, si, per_dev, cur_len); + /* In writes cur_len just means if it's the + * last one. See _ore_add_parity_unit. + */ + ret = _add_parity_units(ios, si, dev, first_dev, + mirrors_p1, devs_in_group, + ios->sp2d ? length : cur_len); if (unlikely(ret)) goto out; @@ -747,6 +773,8 @@ static int _prepare_for_striping(struct ore_io_state *ios) /* Next stripe, start fresh */ si->cur_comp = 0; si->cur_pg = 0; + si->obj_offset += cur_len; + si->unit_off = 0; } } out: diff --git a/fs/exofs/ore_raid.c b/fs/exofs/ore_raid.c index 4e2c032ab8a1..7f20f25c232c 100644 --- a/fs/exofs/ore_raid.c +++ b/fs/exofs/ore_raid.c @@ -218,22 +218,28 @@ static unsigned _sp2d_max_pg(struct __stripe_pages_2d *sp2d) static void _gen_xor_unit(struct __stripe_pages_2d *sp2d) { unsigned p; + unsigned tx_flags = ASYNC_TX_ACK; + + if (sp2d->parity == 1) + tx_flags |= ASYNC_TX_XOR_ZERO_DST; + for (p = 0; p < sp2d->pages_in_unit; p++) { struct __1_page_stripe *_1ps = &sp2d->_1p_stripes[p]; if (!_1ps->write_count) continue; - init_async_submit(&_1ps->submit, - ASYNC_TX_XOR_ZERO_DST | ASYNC_TX_ACK, - NULL, - NULL, NULL, - (addr_conv_t *)_1ps->scribble); - - /* TODO: raid6 */ - _1ps->tx = async_xor(_1ps->pages[sp2d->data_devs], _1ps->pages, - 0, sp2d->data_devs, PAGE_SIZE, - &_1ps->submit); + init_async_submit(&_1ps->submit, tx_flags, + NULL, NULL, NULL, (addr_conv_t *)_1ps->scribble); + + if (sp2d->parity == 1) + _1ps->tx = async_xor(_1ps->pages[sp2d->data_devs], + _1ps->pages, 0, sp2d->data_devs, + PAGE_SIZE, &_1ps->submit); + else /* parity == 2 */ + _1ps->tx = async_gen_syndrome(_1ps->pages, 0, + sp2d->data_devs + sp2d->parity, + PAGE_SIZE, &_1ps->submit); } for (p = 0; p < sp2d->pages_in_unit; p++) { @@ -404,9 +410,8 @@ static int _add_to_r4w_last_page(struct ore_io_state *ios, u64 *offset) ore_calc_stripe_info(ios->layout, *offset, 0, &si); - p = si.unit_off / PAGE_SIZE; - c = _dev_order(ios->layout->group_width * ios->layout->mirrors_p1, - ios->layout->mirrors_p1, si.par_dev, si.dev); + p = si.cur_pg; + c = si.cur_comp; page = ios->sp2d->_1p_stripes[p].pages[c]; pg_len = PAGE_SIZE - (si.unit_off % PAGE_SIZE); @@ -534,9 +539,8 @@ static int _read_4_write_last_stripe(struct ore_io_state *ios) goto read_it; ore_calc_stripe_info(ios->layout, offset, 0, &read_si); - p = read_si.unit_off / PAGE_SIZE; - c = _dev_order(ios->layout->group_width * ios->layout->mirrors_p1, - ios->layout->mirrors_p1, read_si.par_dev, read_si.dev); + p = read_si.cur_pg; + c = read_si.cur_comp; if (min_p == sp2d->pages_in_unit) { /* Didn't do it yet */ @@ -620,7 +624,7 @@ static int _read_4_write_execute(struct ore_io_state *ios) int _ore_add_parity_unit(struct ore_io_state *ios, struct ore_striping_info *si, struct ore_per_dev_state *per_dev, - unsigned cur_len) + unsigned cur_len, bool do_xor) { if (ios->reading) { if (per_dev->cur_sg >= ios->sgs_per_dev) { @@ -640,17 +644,16 @@ int _ore_add_parity_unit(struct ore_io_state *ios, si->cur_pg = _sp2d_min_pg(sp2d); num_pages = _sp2d_max_pg(sp2d) + 1 - si->cur_pg; - if (!cur_len) /* If last stripe operate on parity comp */ - si->cur_comp = sp2d->data_devs; - if (!per_dev->length) { per_dev->offset += si->cur_pg * PAGE_SIZE; /* If first stripe, Read in all read4write pages * (if needed) before we calculate the first parity. */ - _read_4_write_first_stripe(ios); + if (do_xor) + _read_4_write_first_stripe(ios); } - if (!cur_len) /* If last stripe r4w pages of last stripe */ + if (!cur_len && do_xor) + /* If last stripe r4w pages of last stripe */ _read_4_write_last_stripe(ios); _read_4_write_execute(ios); @@ -662,7 +665,7 @@ int _ore_add_parity_unit(struct ore_io_state *ios, ++(ios->cur_par_page); } - BUG_ON(si->cur_comp != sp2d->data_devs); + BUG_ON(si->cur_comp < sp2d->data_devs); BUG_ON(si->cur_pg + num_pages > sp2d->pages_in_unit); ret = _ore_add_stripe_unit(ios, &array_start, 0, pages, @@ -670,9 +673,10 @@ int _ore_add_parity_unit(struct ore_io_state *ios, if (unlikely(ret)) return ret; - /* TODO: raid6 if (last_parity_dev) */ - _gen_xor_unit(sp2d); - _sp2d_reset(sp2d, ios->r4w, ios->private); + if (do_xor) { + _gen_xor_unit(sp2d); + _sp2d_reset(sp2d, ios->r4w, ios->private); + } } return 0; } diff --git a/fs/exofs/ore_raid.h b/fs/exofs/ore_raid.h index 2ffd2c3c6e46..cf6375d82129 100644 --- a/fs/exofs/ore_raid.h +++ b/fs/exofs/ore_raid.h @@ -31,24 +31,6 @@ #define ORE_DBGMSG2(M...) do {} while (0) /* #define ORE_DBGMSG2 ORE_DBGMSG */ -/* Calculate the component order in a stripe. eg the logical data unit - * address within the stripe of @dev given the @par_dev of this stripe. - */ -static inline unsigned _dev_order(unsigned devs_in_group, unsigned mirrors_p1, - unsigned par_dev, unsigned dev) -{ - unsigned first_dev = dev - dev % devs_in_group; - - dev -= first_dev; - par_dev -= first_dev; - - if (devs_in_group == par_dev) /* The raid 0 case */ - return dev / mirrors_p1; - /* raid4/5/6 case */ - return ((devs_in_group + dev - par_dev - mirrors_p1) % devs_in_group) / - mirrors_p1; -} - /* ios_raid.c stuff needed by ios.c */ int _ore_post_alloc_raid_stuff(struct ore_io_state *ios); void _ore_free_raid_stuff(struct ore_io_state *ios); @@ -56,7 +38,8 @@ void _ore_free_raid_stuff(struct ore_io_state *ios); void _ore_add_sg_seg(struct ore_per_dev_state *per_dev, unsigned cur_len, bool not_last); int _ore_add_parity_unit(struct ore_io_state *ios, struct ore_striping_info *si, - struct ore_per_dev_state *per_dev, unsigned cur_len); + struct ore_per_dev_state *per_dev, unsigned cur_len, + bool do_xor); void _ore_add_stripe_page(struct __stripe_pages_2d *sp2d, struct ore_striping_info *si, struct page *page); static inline void _add_stripe_page(struct __stripe_pages_2d *sp2d, diff --git a/fs/exportfs/expfs.c b/fs/exportfs/expfs.c index 48a359dd286e..b01fbfb51f43 100644 --- a/fs/exportfs/expfs.c +++ b/fs/exportfs/expfs.c @@ -259,7 +259,7 @@ static int filldir_one(void * __buf, const char * name, int len, /** * get_name - default export_operations->get_name function - * @dentry: the directory in which to find a name + * @path: the directory in which to find a name * @name: a pointer to a %NAME_MAX+1 char buffer to store the name * @child: the dentry for the child directory. * @@ -337,7 +337,7 @@ out: /** * export_encode_fh - default export_operations->encode_fh function * @inode: the object to encode - * @fh: where to store the file handle fragment + * @fid: where to store the file handle fragment * @max_len: maximum length to store there * @parent: parent directory inode, if wanted * diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index c8238a26818c..afe8a133e3d1 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -1044,6 +1044,8 @@ int ext4_mb_init_group(struct super_block *sb, ext4_group_t group) * allocating. If we are looking at the buddy cache we would * have taken a reference using ext4_mb_load_buddy and that * would have pinned buddy page to page cache. + * The call to ext4_mb_get_buddy_page_lock will mark the + * page accessed. */ ret = ext4_mb_get_buddy_page_lock(sb, group, &e4b); if (ret || !EXT4_MB_GRP_NEED_INIT(this_grp)) { @@ -1062,7 +1064,6 @@ int ext4_mb_init_group(struct super_block *sb, ext4_group_t group) ret = -EIO; goto err; } - mark_page_accessed(page); if (e4b.bd_buddy_page == NULL) { /* @@ -1082,7 +1083,6 @@ int ext4_mb_init_group(struct super_block *sb, ext4_group_t group) ret = -EIO; goto err; } - mark_page_accessed(page); err: ext4_mb_put_buddy_page_lock(&e4b); return ret; @@ -1141,7 +1141,7 @@ ext4_mb_load_buddy(struct super_block *sb, ext4_group_t group, /* we could use find_or_create_page(), but it locks page * what we'd like to avoid in fast path ... */ - page = find_get_page(inode->i_mapping, pnum); + page = find_get_page_flags(inode->i_mapping, pnum, FGP_ACCESSED); if (page == NULL || !PageUptodate(page)) { if (page) /* @@ -1176,15 +1176,16 @@ ext4_mb_load_buddy(struct super_block *sb, ext4_group_t group, ret = -EIO; goto err; } + + /* Pages marked accessed already */ e4b->bd_bitmap_page = page; e4b->bd_bitmap = page_address(page) + (poff * sb->s_blocksize); - mark_page_accessed(page); block++; pnum = block / blocks_per_page; poff = block % blocks_per_page; - page = find_get_page(inode->i_mapping, pnum); + page = find_get_page_flags(inode->i_mapping, pnum, FGP_ACCESSED); if (page == NULL || !PageUptodate(page)) { if (page) page_cache_release(page); @@ -1209,9 +1210,10 @@ ext4_mb_load_buddy(struct super_block *sb, ext4_group_t group, ret = -EIO; goto err; } + + /* Pages marked accessed already */ e4b->bd_buddy_page = page; e4b->bd_buddy = page_address(page) + (poff * sb->s_blocksize); - mark_page_accessed(page); BUG_ON(e4b->bd_bitmap_page == NULL); BUG_ON(e4b->bd_buddy_page == NULL); diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c index c18d95b50540..1a64e7a52b84 100644 --- a/fs/ext4/page-io.c +++ b/fs/ext4/page-io.c @@ -429,7 +429,7 @@ int ext4_bio_write_page(struct ext4_io_submit *io, block_start = bh_offset(bh); if (block_start >= len) { /* - * Comments copied from block_write_full_page_endio: + * Comments copied from block_write_full_page: * * The page straddles i_size. It must be zeroed out on * each and every writepage invocation because it may diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c index f3b84cd9de56..08b3c116915b 100644 --- a/fs/ext4/resize.c +++ b/fs/ext4/resize.c @@ -42,7 +42,7 @@ int ext4_resize_begin(struct super_block *sb) void ext4_resize_end(struct super_block *sb) { clear_bit_unlock(EXT4_RESIZING, &EXT4_SB(sb)->s_resize_flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); } static ext4_group_t ext4_meta_bg_first_group(struct super_block *sb, diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c index 4aa521aa9bc3..c405b8f17054 100644 --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -69,7 +69,6 @@ repeat: goto repeat; } out: - mark_page_accessed(page); return page; } @@ -137,13 +136,11 @@ int ra_meta_pages(struct f2fs_sb_info *sbi, int start, int nrpages, int type) if (!page) continue; if (PageUptodate(page)) { - mark_page_accessed(page); f2fs_put_page(page, 1); continue; } f2fs_submit_page_mbio(sbi, page, blk_addr, &fio); - mark_page_accessed(page); f2fs_put_page(page, 0); } out: diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index a161e955c4c8..57caa6eaf47b 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -967,7 +967,6 @@ repeat: goto repeat; } got_it: - mark_page_accessed(page); return page; } @@ -1022,7 +1021,6 @@ page_hit: f2fs_put_page(page, 1); return ERR_PTR(-EIO); } - mark_page_accessed(page); return page; } diff --git a/fs/fat/fat.h b/fs/fat/fat.h index 7c31f4bc74a9..e0c4ba39a377 100644 --- a/fs/fat/fat.h +++ b/fs/fat/fat.h @@ -52,7 +52,8 @@ struct fat_mount_options { usefree:1, /* Use free_clusters for FAT32 */ tz_set:1, /* Filesystem timestamps' offset set */ rodir:1, /* allow ATTR_RO for directory */ - discard:1; /* Issue discard requests on deletions */ + discard:1, /* Issue discard requests on deletions */ + dos1xfloppy:1; /* Assume default BPB for DOS 1.x floppies */ }; #define FAT_HASH_BITS 8 diff --git a/fs/fat/inode.c b/fs/fat/inode.c index b3361fe2bcb5..9c83594d7fb5 100644 --- a/fs/fat/inode.c +++ b/fs/fat/inode.c @@ -35,9 +35,71 @@ #define CONFIG_FAT_DEFAULT_IOCHARSET "" #endif +#define KB_IN_SECTORS 2 + +/* + * A deserialized copy of the on-disk structure laid out in struct + * fat_boot_sector. + */ +struct fat_bios_param_block { + u16 fat_sector_size; + u8 fat_sec_per_clus; + u16 fat_reserved; + u8 fat_fats; + u16 fat_dir_entries; + u16 fat_sectors; + u16 fat_fat_length; + u32 fat_total_sect; + + u8 fat16_state; + u32 fat16_vol_id; + + u32 fat32_length; + u32 fat32_root_cluster; + u16 fat32_info_sector; + u8 fat32_state; + u32 fat32_vol_id; +}; + static int fat_default_codepage = CONFIG_FAT_DEFAULT_CODEPAGE; static char fat_default_iocharset[] = CONFIG_FAT_DEFAULT_IOCHARSET; +static struct fat_floppy_defaults { + unsigned nr_sectors; + unsigned sec_per_clus; + unsigned dir_entries; + unsigned media; + unsigned fat_length; +} floppy_defaults[] = { +{ + .nr_sectors = 160 * KB_IN_SECTORS, + .sec_per_clus = 1, + .dir_entries = 64, + .media = 0xFE, + .fat_length = 1, +}, +{ + .nr_sectors = 180 * KB_IN_SECTORS, + .sec_per_clus = 1, + .dir_entries = 64, + .media = 0xFC, + .fat_length = 2, +}, +{ + .nr_sectors = 320 * KB_IN_SECTORS, + .sec_per_clus = 2, + .dir_entries = 112, + .media = 0xFF, + .fat_length = 1, +}, +{ + .nr_sectors = 360 * KB_IN_SECTORS, + .sec_per_clus = 2, + .dir_entries = 112, + .media = 0xFD, + .fat_length = 2, +}, +}; static int fat_add_cluster(struct inode *inode) { @@ -359,7 +421,7 @@ struct inode *fat_iget(struct super_block *sb, loff_t i_pos) static int is_exec(unsigned char *extension) { - unsigned char *exe_extensions = "EXECOMBAT", *walk; + unsigned char exe_extensions[] = "EXECOMBAT", *walk; for (walk = exe_extensions; *walk; walk += 3) if (!strncmp(extension, walk, 3)) @@ -853,6 +915,8 @@ static int fat_show_options(struct seq_file *m, struct dentry *root) seq_puts(m, ",nfs=stale_rw"); if (opts->discard) seq_puts(m, ",discard"); + if (opts->dos1xfloppy) + seq_puts(m, ",dos1xfloppy"); return 0; } @@ -867,7 +931,7 @@ enum { Opt_uni_xl_no, Opt_uni_xl_yes, Opt_nonumtail_no, Opt_nonumtail_yes, Opt_obsolete, Opt_flush, Opt_tz_utc, Opt_rodir, Opt_err_cont, Opt_err_panic, Opt_err_ro, Opt_discard, Opt_nfs, Opt_time_offset, - Opt_nfs_stale_rw, Opt_nfs_nostale_ro, Opt_err, + Opt_nfs_stale_rw, Opt_nfs_nostale_ro, Opt_err, Opt_dos1xfloppy, }; static const match_table_t fat_tokens = { @@ -900,6 +964,7 @@ static const match_table_t fat_tokens = { {Opt_nfs_stale_rw, "nfs"}, {Opt_nfs_stale_rw, "nfs=stale_rw"}, {Opt_nfs_nostale_ro, "nfs=nostale_ro"}, + {Opt_dos1xfloppy, "dos1xfloppy"}, {Opt_obsolete, "conv=binary"}, {Opt_obsolete, "conv=text"}, {Opt_obsolete, "conv=auto"}, @@ -1102,6 +1167,9 @@ static int parse_options(struct super_block *sb, char *options, int is_vfat, case Opt_nfs_nostale_ro: opts->nfs = FAT_NFS_NOSTALE_RO; break; + case Opt_dos1xfloppy: + opts->dos1xfloppy = 1; + break; /* msdos specific */ case Opt_dots: @@ -1247,6 +1315,169 @@ static unsigned long calc_fat_clusters(struct super_block *sb) return sbi->fat_length * sb->s_blocksize * 8 / sbi->fat_bits; } +static bool fat_bpb_is_zero(struct fat_boot_sector *b) +{ + if (get_unaligned_le16(&b->sector_size)) + return false; + if (b->sec_per_clus) + return false; + if (b->reserved) + return false; + if (b->fats) + return false; + if (get_unaligned_le16(&b->dir_entries)) + return false; + if (get_unaligned_le16(&b->sectors)) + return false; + if (b->media) + return false; + if (b->fat_length) + return false; + if (b->secs_track) + return false; + if (b->heads) + return false; + return true; +} + +static int fat_read_bpb(struct super_block *sb, struct fat_boot_sector *b, + int silent, struct fat_bios_param_block *bpb) +{ + int error = -EINVAL; + + /* Read in BPB ... */ + memset(bpb, 0, sizeof(*bpb)); + bpb->fat_sector_size = get_unaligned_le16(&b->sector_size); + bpb->fat_sec_per_clus = b->sec_per_clus; + bpb->fat_reserved = le16_to_cpu(b->reserved); + bpb->fat_fats = b->fats; + bpb->fat_dir_entries = get_unaligned_le16(&b->dir_entries); + bpb->fat_sectors = get_unaligned_le16(&b->sectors); + bpb->fat_fat_length = le16_to_cpu(b->fat_length); + bpb->fat_total_sect = le32_to_cpu(b->total_sect); + + bpb->fat16_state = b->fat16.state; + bpb->fat16_vol_id = get_unaligned_le32(b->fat16.vol_id); + + bpb->fat32_length = le32_to_cpu(b->fat32.length); + bpb->fat32_root_cluster = le32_to_cpu(b->fat32.root_cluster); + bpb->fat32_info_sector = le16_to_cpu(b->fat32.info_sector); + bpb->fat32_state = b->fat32.state; + bpb->fat32_vol_id = get_unaligned_le32(b->fat32.vol_id); + + /* Validate this looks like a FAT filesystem BPB */ + if (!bpb->fat_reserved) { + if (!silent) + fat_msg(sb, KERN_ERR, + "bogus number of reserved sectors"); + goto out; + } + if (!bpb->fat_fats) { + if (!silent) + fat_msg(sb, KERN_ERR, "bogus number of FAT structure"); + goto out; + } + + /* + * Earlier we checked here that b->secs_track and b->head are nonzero, + * but it turns out valid FAT filesystems can have zero there. + */ + + if (!fat_valid_media(b->media)) { + if (!silent) + fat_msg(sb, KERN_ERR, "invalid media value (0x%02x)", + (unsigned)b->media); + goto out; + } + + if (!is_power_of_2(bpb->fat_sector_size) + || (bpb->fat_sector_size < 512) + || (bpb->fat_sector_size > 4096)) { + if (!silent) + fat_msg(sb, KERN_ERR, "bogus logical sector size %u", + (unsigned)bpb->fat_sector_size); + goto out; + } + + if (!is_power_of_2(bpb->fat_sec_per_clus)) { + if (!silent) + fat_msg(sb, KERN_ERR, "bogus sectors per cluster %u", + (unsigned)bpb->fat_sec_per_clus); + goto out; + } + + error = 0; + +out: + return error; +} + +static int fat_read_static_bpb(struct super_block *sb, + struct fat_boot_sector *b, int silent, + struct fat_bios_param_block *bpb) +{ + static const char *notdos1x = "This doesn't look like a DOS 1.x volume"; + + struct fat_floppy_defaults *fdefaults = NULL; + int error = -EINVAL; + sector_t bd_sects; + unsigned i; + + bd_sects = i_size_read(sb->s_bdev->bd_inode) / SECTOR_SIZE; + + /* 16-bit DOS 1.x reliably wrote bootstrap short-jmp code */ + if (b->ignored[0] != 0xeb || b->ignored[2] != 0x90) { + if (!silent) + fat_msg(sb, KERN_ERR, + "%s; no bootstrapping code", notdos1x); + goto out; + } + + /* + * If any value in this region is non-zero, it isn't archaic + * DOS. + */ + if (!fat_bpb_is_zero(b)) { + if (!silent) + fat_msg(sb, KERN_ERR, + "%s; DOS 2.x BPB is non-zero", notdos1x); + goto out; + } + + for (i = 0; i < ARRAY_SIZE(floppy_defaults); i++) { + if (floppy_defaults[i].nr_sectors == bd_sects) { + fdefaults = &floppy_defaults[i]; + break; + } + } + + if (fdefaults == NULL) { + if (!silent) + fat_msg(sb, KERN_WARNING, + "This looks like a DOS 1.x volume, but isn't a recognized floppy size (%llu sectors)", + (u64)bd_sects); + goto out; + } + + if (!silent) + fat_msg(sb, KERN_INFO, + "This looks like a DOS 1.x volume; assuming default BPB values"); + + memset(bpb, 0, sizeof(*bpb)); + bpb->fat_sector_size = SECTOR_SIZE; + bpb->fat_sec_per_clus = fdefaults->sec_per_clus; + bpb->fat_reserved = 1; + bpb->fat_fats = 2; + bpb->fat_dir_entries = fdefaults->dir_entries; + bpb->fat_sectors = fdefaults->nr_sectors; + bpb->fat_fat_length = fdefaults->fat_length; + + error = 0; + +out: + return error; +} + /* * Read the super block of an MS-DOS FS. */ @@ -1256,12 +1487,11 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat, struct inode *root_inode = NULL, *fat_inode = NULL; struct inode *fsinfo_inode = NULL; struct buffer_head *bh; - struct fat_boot_sector *b; + struct fat_bios_param_block bpb; struct msdos_sb_info *sbi; u16 logical_sector_size; u32 total_sectors, total_clusters, fat_clusters, rootdir_sectors; int debug; - unsigned int media; long error; char buf[50]; @@ -1298,100 +1528,72 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat, goto out_fail; } - b = (struct fat_boot_sector *) bh->b_data; - if (!b->reserved) { - if (!silent) - fat_msg(sb, KERN_ERR, "bogus number of reserved sectors"); - brelse(bh); - goto out_invalid; - } - if (!b->fats) { - if (!silent) - fat_msg(sb, KERN_ERR, "bogus number of FAT structure"); - brelse(bh); - goto out_invalid; - } - - /* - * Earlier we checked here that b->secs_track and b->head are nonzero, - * but it turns out valid FAT filesystems can have zero there. - */ + error = fat_read_bpb(sb, (struct fat_boot_sector *)bh->b_data, silent, + &bpb); + if (error == -EINVAL && sbi->options.dos1xfloppy) + error = fat_read_static_bpb(sb, + (struct fat_boot_sector *)bh->b_data, silent, &bpb); + brelse(bh); - media = b->media; - if (!fat_valid_media(media)) { - if (!silent) - fat_msg(sb, KERN_ERR, "invalid media value (0x%02x)", - media); - brelse(bh); - goto out_invalid; - } - logical_sector_size = get_unaligned_le16(&b->sector_size); - if (!is_power_of_2(logical_sector_size) - || (logical_sector_size < 512) - || (logical_sector_size > 4096)) { - if (!silent) - fat_msg(sb, KERN_ERR, "bogus logical sector size %u", - logical_sector_size); - brelse(bh); - goto out_invalid; - } - sbi->sec_per_clus = b->sec_per_clus; - if (!is_power_of_2(sbi->sec_per_clus)) { - if (!silent) - fat_msg(sb, KERN_ERR, "bogus sectors per cluster %u", - sbi->sec_per_clus); - brelse(bh); + if (error == -EINVAL) goto out_invalid; - } + else if (error) + goto out_fail; + + logical_sector_size = bpb.fat_sector_size; + sbi->sec_per_clus = bpb.fat_sec_per_clus; + error = -EIO; if (logical_sector_size < sb->s_blocksize) { fat_msg(sb, KERN_ERR, "logical sector size too small for device" " (logical sector size = %u)", logical_sector_size); - brelse(bh); goto out_fail; } + if (logical_sector_size > sb->s_blocksize) { - brelse(bh); + struct buffer_head *bh_resize; if (!sb_set_blocksize(sb, logical_sector_size)) { fat_msg(sb, KERN_ERR, "unable to set blocksize %u", logical_sector_size); goto out_fail; } - bh = sb_bread(sb, 0); - if (bh == NULL) { + + /* Verify that the larger boot sector is fully readable */ + bh_resize = sb_bread(sb, 0); + if (bh_resize == NULL) { fat_msg(sb, KERN_ERR, "unable to read boot sector" " (logical sector size = %lu)", sb->s_blocksize); goto out_fail; } - b = (struct fat_boot_sector *) bh->b_data; + brelse(bh_resize); } mutex_init(&sbi->s_lock); sbi->cluster_size = sb->s_blocksize * sbi->sec_per_clus; sbi->cluster_bits = ffs(sbi->cluster_size) - 1; - sbi->fats = b->fats; + sbi->fats = bpb.fat_fats; sbi->fat_bits = 0; /* Don't know yet */ - sbi->fat_start = le16_to_cpu(b->reserved); - sbi->fat_length = le16_to_cpu(b->fat_length); + sbi->fat_start = bpb.fat_reserved; + sbi->fat_length = bpb.fat_fat_length; sbi->root_cluster = 0; sbi->free_clusters = -1; /* Don't know yet */ sbi->free_clus_valid = 0; sbi->prev_free = FAT_START_ENT; sb->s_maxbytes = 0xffffffff; - if (!sbi->fat_length && b->fat32.length) { + if (!sbi->fat_length && bpb.fat32_length) { struct fat_boot_fsinfo *fsinfo; struct buffer_head *fsinfo_bh; /* Must be FAT32 */ sbi->fat_bits = 32; - sbi->fat_length = le32_to_cpu(b->fat32.length); - sbi->root_cluster = le32_to_cpu(b->fat32.root_cluster); + sbi->fat_length = bpb.fat32_length; + sbi->root_cluster = bpb.fat32_root_cluster; /* MC - if info_sector is 0, don't multiply by 0 */ - sbi->fsinfo_sector = le16_to_cpu(b->fat32.info_sector); + sbi->fsinfo_sector = bpb.fat32_info_sector; if (sbi->fsinfo_sector == 0) sbi->fsinfo_sector = 1; @@ -1399,7 +1601,6 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat, if (fsinfo_bh == NULL) { fat_msg(sb, KERN_ERR, "bread failed, FSINFO block" " (sector = %lu)", sbi->fsinfo_sector); - brelse(bh); goto out_fail; } @@ -1422,35 +1623,28 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat, /* interpret volume ID as a little endian 32 bit integer */ if (sbi->fat_bits == 32) - sbi->vol_id = (((u32)b->fat32.vol_id[0]) | - ((u32)b->fat32.vol_id[1] << 8) | - ((u32)b->fat32.vol_id[2] << 16) | - ((u32)b->fat32.vol_id[3] << 24)); + sbi->vol_id = bpb.fat32_vol_id; else /* fat 16 or 12 */ - sbi->vol_id = (((u32)b->fat16.vol_id[0]) | - ((u32)b->fat16.vol_id[1] << 8) | - ((u32)b->fat16.vol_id[2] << 16) | - ((u32)b->fat16.vol_id[3] << 24)); + sbi->vol_id = bpb.fat16_vol_id; sbi->dir_per_block = sb->s_blocksize / sizeof(struct msdos_dir_entry); sbi->dir_per_block_bits = ffs(sbi->dir_per_block) - 1; sbi->dir_start = sbi->fat_start + sbi->fats * sbi->fat_length; - sbi->dir_entries = get_unaligned_le16(&b->dir_entries); + sbi->dir_entries = bpb.fat_dir_entries; if (sbi->dir_entries & (sbi->dir_per_block - 1)) { if (!silent) fat_msg(sb, KERN_ERR, "bogus directory-entries per block" " (%u)", sbi->dir_entries); - brelse(bh); goto out_invalid; } rootdir_sectors = sbi->dir_entries * sizeof(struct msdos_dir_entry) / sb->s_blocksize; sbi->data_start = sbi->dir_start + rootdir_sectors; - total_sectors = get_unaligned_le16(&b->sectors); + total_sectors = bpb.fat_sectors; if (total_sectors == 0) - total_sectors = le32_to_cpu(b->total_sect); + total_sectors = bpb.fat_total_sect; total_clusters = (total_sectors - sbi->data_start) / sbi->sec_per_clus; @@ -1459,9 +1653,9 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat, /* some OSes set FAT_STATE_DIRTY and clean it on unmount. */ if (sbi->fat_bits == 32) - sbi->dirty = b->fat32.state & FAT_STATE_DIRTY; + sbi->dirty = bpb.fat32_state & FAT_STATE_DIRTY; else /* fat 16 or 12 */ - sbi->dirty = b->fat16.state & FAT_STATE_DIRTY; + sbi->dirty = bpb.fat16_state & FAT_STATE_DIRTY; /* check that FAT table does not overflow */ fat_clusters = calc_fat_clusters(sb); @@ -1470,7 +1664,6 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat, if (!silent) fat_msg(sb, KERN_ERR, "count of clusters too big (%u)", total_clusters); - brelse(bh); goto out_invalid; } @@ -1483,8 +1676,6 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat, if (sbi->prev_free < FAT_START_ENT) sbi->prev_free = FAT_START_ENT; - brelse(bh); - /* set up enough so that it can read an inode */ fat_hash_init(sb); dir_hash_init(sb); diff --git a/fs/file_table.c b/fs/file_table.c index a374f5033e97..40bf4660f0a3 100644 --- a/fs/file_table.c +++ b/fs/file_table.c @@ -76,14 +76,14 @@ EXPORT_SYMBOL_GPL(get_max_files); * Handle nr_files sysctl */ #if defined(CONFIG_SYSCTL) && defined(CONFIG_PROC_FS) -int proc_nr_files(ctl_table *table, int write, +int proc_nr_files(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { files_stat.nr_files = get_nr_files(); return proc_doulongvec_minmax(table, write, buffer, lenp, ppos); } #else -int proc_nr_files(ctl_table *table, int write, +int proc_nr_files(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { return -ENOSYS; diff --git a/fs/fscache/cache.c b/fs/fscache/cache.c index f7cff367db7f..56cce7fdd39e 100644 --- a/fs/fscache/cache.c +++ b/fs/fscache/cache.c @@ -280,15 +280,15 @@ int fscache_add_cache(struct fscache_cache *cache, spin_unlock(&fscache_fsdef_index.lock); up_write(&fscache_addremove_sem); - printk(KERN_NOTICE "FS-Cache: Cache \"%s\" added (type %s)\n", - cache->tag->name, cache->ops->name); + pr_notice("Cache \"%s\" added (type %s)\n", + cache->tag->name, cache->ops->name); kobject_uevent(cache->kobj, KOBJ_ADD); _leave(" = 0 [%s]", cache->identifier); return 0; tag_in_use: - printk(KERN_ERR "FS-Cache: Cache tag '%s' already in use\n", tagname); + pr_err("Cache tag '%s' already in use\n", tagname); __fscache_release_cache_tag(tag); _leave(" = -EXIST"); return -EEXIST; @@ -317,8 +317,7 @@ EXPORT_SYMBOL(fscache_add_cache); void fscache_io_error(struct fscache_cache *cache) { if (!test_and_set_bit(FSCACHE_IOERROR, &cache->flags)) - printk(KERN_ERR "FS-Cache:" - " Cache '%s' stopped due to I/O error\n", + pr_err("Cache '%s' stopped due to I/O error\n", cache->ops->name); } EXPORT_SYMBOL(fscache_io_error); @@ -369,8 +368,8 @@ void fscache_withdraw_cache(struct fscache_cache *cache) _enter(""); - printk(KERN_NOTICE "FS-Cache: Withdrawing cache \"%s\"\n", - cache->tag->name); + pr_notice("Withdrawing cache \"%s\"\n", + cache->tag->name); /* make the cache unavailable for cookie acquisition */ if (test_and_set_bit(FSCACHE_CACHE_WITHDRAWN, &cache->flags)) diff --git a/fs/fscache/cookie.c b/fs/fscache/cookie.c index 29d7feb62cf7..aec01be91b0a 100644 --- a/fs/fscache/cookie.c +++ b/fs/fscache/cookie.c @@ -519,7 +519,7 @@ void __fscache_disable_cookie(struct fscache_cookie *cookie, bool invalidate) ASSERTCMP(atomic_read(&cookie->n_active), >, 0); if (atomic_read(&cookie->n_children) != 0) { - printk(KERN_ERR "FS-Cache: Cookie '%s' still has children\n", + pr_err("Cookie '%s' still has children\n", cookie->def->name); BUG(); } diff --git a/fs/fscache/histogram.c b/fs/fscache/histogram.c index bad496748a59..7d637e2335fd 100644 --- a/fs/fscache/histogram.c +++ b/fs/fscache/histogram.c @@ -31,12 +31,10 @@ static int fscache_histogram_show(struct seq_file *m, void *v) switch ((unsigned long) v) { case 1: - seq_puts(m, "JIFS SECS OBJ INST OP RUNS OBJ RUNS " - " RETRV DLY RETRIEVLS\n"); + seq_puts(m, "JIFS SECS OBJ INST OP RUNS OBJ RUNS RETRV DLY RETRIEVLS\n"); return 0; case 2: - seq_puts(m, "===== ===== ========= ========= =========" - " ========= =========\n"); + seq_puts(m, "===== ===== ========= ========= ========= ========= =========\n"); return 0; default: index = (unsigned long) v - 3; diff --git a/fs/fscache/internal.h b/fs/fscache/internal.h index 4226f6680b06..bc6c08fcfddd 100644 --- a/fs/fscache/internal.h +++ b/fs/fscache/internal.h @@ -22,6 +22,12 @@ * */ +#ifdef pr_fmt +#undef pr_fmt +#endif + +#define pr_fmt(fmt) "FS-Cache: " fmt + #include <linux/fscache-cache.h> #include <linux/sched.h> @@ -413,8 +419,8 @@ do { \ #define ASSERT(X) \ do { \ if (unlikely(!(X))) { \ - printk(KERN_ERR "\n"); \ - printk(KERN_ERR "FS-Cache: Assertion failed\n"); \ + pr_err("\n"); \ + pr_err("Assertion failed\n"); \ BUG(); \ } \ } while (0) @@ -422,9 +428,9 @@ do { \ #define ASSERTCMP(X, OP, Y) \ do { \ if (unlikely(!((X) OP (Y)))) { \ - printk(KERN_ERR "\n"); \ - printk(KERN_ERR "FS-Cache: Assertion failed\n"); \ - printk(KERN_ERR "%lx " #OP " %lx is false\n", \ + pr_err("\n"); \ + pr_err("Assertion failed\n"); \ + pr_err("%lx " #OP " %lx is false\n", \ (unsigned long)(X), (unsigned long)(Y)); \ BUG(); \ } \ @@ -433,8 +439,8 @@ do { \ #define ASSERTIF(C, X) \ do { \ if (unlikely((C) && !(X))) { \ - printk(KERN_ERR "\n"); \ - printk(KERN_ERR "FS-Cache: Assertion failed\n"); \ + pr_err("\n"); \ + pr_err("Assertion failed\n"); \ BUG(); \ } \ } while (0) @@ -442,9 +448,9 @@ do { \ #define ASSERTIFCMP(C, X, OP, Y) \ do { \ if (unlikely((C) && !((X) OP (Y)))) { \ - printk(KERN_ERR "\n"); \ - printk(KERN_ERR "FS-Cache: Assertion failed\n"); \ - printk(KERN_ERR "%lx " #OP " %lx is false\n", \ + pr_err("\n"); \ + pr_err("Assertion failed\n"); \ + pr_err("%lx " #OP " %lx is false\n", \ (unsigned long)(X), (unsigned long)(Y)); \ BUG(); \ } \ diff --git a/fs/fscache/main.c b/fs/fscache/main.c index 7c27907e650c..63f868e869b9 100644 --- a/fs/fscache/main.c +++ b/fs/fscache/main.c @@ -67,7 +67,7 @@ static int fscache_max_active_sysctl(struct ctl_table *table, int write, return ret; } -ctl_table fscache_sysctls[] = { +struct ctl_table fscache_sysctls[] = { { .procname = "object_max_active", .data = &fscache_object_max_active, @@ -87,7 +87,7 @@ ctl_table fscache_sysctls[] = { {} }; -ctl_table fscache_sysctls_root[] = { +struct ctl_table fscache_sysctls_root[] = { { .procname = "fscache", .mode = 0555, @@ -146,8 +146,7 @@ static int __init fscache_init(void) 0, fscache_cookie_init_once); if (!fscache_cookie_jar) { - printk(KERN_NOTICE - "FS-Cache: Failed to allocate a cookie jar\n"); + pr_notice("Failed to allocate a cookie jar\n"); ret = -ENOMEM; goto error_cookie_jar; } @@ -156,7 +155,7 @@ static int __init fscache_init(void) if (!fscache_root) goto error_kobj; - printk(KERN_NOTICE "FS-Cache: Loaded\n"); + pr_notice("Loaded\n"); return 0; error_kobj: @@ -192,7 +191,7 @@ static void __exit fscache_exit(void) fscache_proc_cleanup(); destroy_workqueue(fscache_op_wq); destroy_workqueue(fscache_object_wq); - printk(KERN_NOTICE "FS-Cache: Unloaded\n"); + pr_notice("Unloaded\n"); } module_exit(fscache_exit); diff --git a/fs/fscache/netfs.c b/fs/fscache/netfs.c index 989f39401547..6d941f56faf4 100644 --- a/fs/fscache/netfs.c +++ b/fs/fscache/netfs.c @@ -65,8 +65,7 @@ int __fscache_register_netfs(struct fscache_netfs *netfs) list_add(&netfs->link, &fscache_netfs_list); ret = 0; - printk(KERN_NOTICE "FS-Cache: Netfs '%s' registered for caching\n", - netfs->name); + pr_notice("Netfs '%s' registered for caching\n", netfs->name); already_registered: up_write(&fscache_addremove_sem); @@ -97,8 +96,8 @@ void __fscache_unregister_netfs(struct fscache_netfs *netfs) up_write(&fscache_addremove_sem); - printk(KERN_NOTICE "FS-Cache: Netfs '%s' unregistered from caching\n", - netfs->name); + pr_notice("Netfs '%s' unregistered from caching\n", + netfs->name); _leave(""); } diff --git a/fs/fscache/object-list.c b/fs/fscache/object-list.c index b5ebc2d7d80d..b8179ca6bf9d 100644 --- a/fs/fscache/object-list.c +++ b/fs/fscache/object-list.c @@ -285,20 +285,20 @@ static int fscache_objlist_show(struct seq_file *m, void *v) fscache_unuse_cookie(obj); if (keylen > 0 || auxlen > 0) { - seq_printf(m, " "); + seq_puts(m, " "); for (p = buf; keylen > 0; keylen--) seq_printf(m, "%02x", *p++); if (auxlen > 0) { if (config & FSCACHE_OBJLIST_CONFIG_KEY) - seq_printf(m, ", "); + seq_puts(m, ", "); for (; auxlen > 0; auxlen--) seq_printf(m, "%02x", *p++); } } - seq_printf(m, "\n"); + seq_puts(m, "\n"); } else { - seq_printf(m, "<no_netfs>\n"); + seq_puts(m, "<no_netfs>\n"); } return 0; } diff --git a/fs/fscache/operation.c b/fs/fscache/operation.c index 318071aca217..e7b87a0e5185 100644 --- a/fs/fscache/operation.c +++ b/fs/fscache/operation.c @@ -51,8 +51,7 @@ void fscache_enqueue_operation(struct fscache_operation *op) _debug("queue for caller's attention"); break; default: - printk(KERN_ERR "FS-Cache: Unexpected op type %lx", - op->flags); + pr_err("Unexpected op type %lx", op->flags); BUG(); break; } diff --git a/fs/fscache/page.c b/fs/fscache/page.c index 7f5c658af755..ed70714503fa 100644 --- a/fs/fscache/page.c +++ b/fs/fscache/page.c @@ -1108,10 +1108,8 @@ void fscache_mark_page_cached(struct fscache_retrieval *op, struct page *page) static bool once_only; if (!once_only) { once_only = true; - printk(KERN_WARNING "FS-Cache:" - " Cookie type %s marked page %lx" - " multiple times\n", - cookie->def->name, page->index); + pr_warn("Cookie type %s marked page %lx multiple times\n", + cookie->def->name, page->index); } } diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c index aac71ce373e4..098f97bdcf1b 100644 --- a/fs/fuse/dev.c +++ b/fs/fuse/dev.c @@ -1614,7 +1614,7 @@ out_finish: static void fuse_retrieve_end(struct fuse_conn *fc, struct fuse_req *req) { - release_pages(req->pages, req->num_pages, 0); + release_pages(req->pages, req->num_pages, false); } static int fuse_retrieve(struct fuse_conn *fc, struct inode *inode, diff --git a/fs/fuse/file.c b/fs/fuse/file.c index 96d513e01a5d..903cbc9cd6bd 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -1089,8 +1089,6 @@ static ssize_t fuse_fill_write_pages(struct fuse_req *req, tmp = iov_iter_copy_from_user_atomic(page, ii, offset, bytes); flush_dcache_page(page); - mark_page_accessed(page); - if (!tmp) { unlock_page(page); page_cache_release(page); @@ -2304,7 +2302,6 @@ static int fuse_file_flock(struct file *file, int cmd, struct file_lock *fl) struct fuse_file *ff = file->private_data; /* emulate flock with POSIX locks */ - fl->fl_owner = (fl_owner_t) file; ff->flock = true; err = fuse_setlk(file, fl, 1); } diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c index ce62dcac90b6..492123cda64a 100644 --- a/fs/gfs2/aops.c +++ b/fs/gfs2/aops.c @@ -431,7 +431,7 @@ static int gfs2_jdata_writepages(struct address_space *mapping, ret = gfs2_write_cache_jdata(mapping, wbc); if (ret == 0 && wbc->sync_mode == WB_SYNC_ALL) { - gfs2_log_flush(sdp, ip->i_gl); + gfs2_log_flush(sdp, ip->i_gl, NORMAL_FLUSH); ret = gfs2_write_cache_jdata(mapping, wbc); } return ret; @@ -577,7 +577,6 @@ int gfs2_internal_read(struct gfs2_inode *ip, char *buf, loff_t *pos, p = kmap_atomic(page); memcpy(buf + copied, p + offset, amt); kunmap_atomic(p); - mark_page_accessed(page); page_cache_release(page); copied += amt; index++; diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c index c62d4b9f51dc..e6ee5b6e8d99 100644 --- a/fs/gfs2/bmap.c +++ b/fs/gfs2/bmap.c @@ -707,7 +707,7 @@ int gfs2_extent_map(struct inode *inode, u64 lblock, int *new, u64 *dblock, unsi * @top: The first pointer in the buffer * @bottom: One more than the last pointer * @height: the height this buffer is at - * @data: a pointer to a struct strip_mine + * @sm: a pointer to a struct strip_mine * * Returns: errno */ @@ -992,6 +992,8 @@ unlock: return err; } +#define GFS2_JTRUNC_REVOKES 8192 + /** * gfs2_journaled_truncate - Wrapper for truncate_pagecache for jdata files * @inode: The inode being truncated @@ -1003,8 +1005,6 @@ unlock: * if the number of pages being truncated gets too large. */ -#define GFS2_JTRUNC_REVOKES 8192 - static int gfs2_journaled_truncate(struct inode *inode, u64 oldsize, u64 newsize) { struct gfs2_sbd *sdp = GFS2_SB(inode); @@ -1348,7 +1348,7 @@ void gfs2_free_journal_extents(struct gfs2_jdesc *jd) * gfs2_add_jextent - Add or merge a new extent to extent cache * @jd: The journal descriptor * @lblock: The logical block at start of new extent - * @pblock: The physical block at start of new extent + * @dblock: The physical block at start of new extent * @blocks: Size of extent in fs blocks * * Returns: 0 on success or -ENOMEM diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c index 80d67253623c..6ab0cfb2e891 100644 --- a/fs/gfs2/file.c +++ b/fs/gfs2/file.c @@ -203,9 +203,9 @@ void gfs2_set_inode_flags(struct inode *inode) GFS2_DIF_INHERIT_JDATA) /** - * gfs2_set_flags - set flags on an inode - * @inode: The inode - * @flags: The flags to set + * do_gfs2_set_flags - set flags on an inode + * @filp: file pointer + * @reqflags: The flags to set * @mask: Indicates which flags are valid * */ @@ -256,7 +256,7 @@ static int do_gfs2_set_flags(struct file *filp, u32 reqflags, u32 mask) } if ((flags ^ new_flags) & GFS2_DIF_JDATA) { if (flags & GFS2_DIF_JDATA) - gfs2_log_flush(sdp, ip->i_gl); + gfs2_log_flush(sdp, ip->i_gl, NORMAL_FLUSH); error = filemap_fdatawrite(inode->i_mapping); if (error) goto out; @@ -318,7 +318,7 @@ static long gfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) /** * gfs2_size_hint - Give a hint to the size of a write request - * @file: The struct file + * @filep: The struct file * @offset: The file offset of the write * @size: The length of the write * @@ -371,7 +371,7 @@ static int gfs2_allocate_page_backing(struct page *page) /** * gfs2_page_mkwrite - Make a shared, mmap()ed, page writable * @vma: The virtual memory area - * @page: The page which is about to become writable + * @vmf: The virtual memory fault containing the page to become writable * * When the page becomes writable, we need to ensure that we have * blocks allocated on disk to back that page. diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c index aec7f73832f0..c355f7320e44 100644 --- a/fs/gfs2/glock.c +++ b/fs/gfs2/glock.c @@ -277,7 +277,7 @@ static inline int may_grant(const struct gfs2_glock *gl, const struct gfs2_holde static void gfs2_holder_wake(struct gfs2_holder *gh) { clear_bit(HIF_WAIT, &gh->gh_iflags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&gh->gh_iflags, HIF_WAIT); } @@ -411,7 +411,7 @@ static void gfs2_demote_wake(struct gfs2_glock *gl) { gl->gl_demote_state = LM_ST_EXCLUSIVE; clear_bit(GLF_DEMOTE, &gl->gl_flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&gl->gl_flags, GLF_DEMOTE); } @@ -620,7 +620,7 @@ out: out_sched: clear_bit(GLF_LOCK, &gl->gl_flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); gl->gl_lockref.count++; if (queue_delayed_work(glock_workqueue, &gl->gl_work, 0) == 0) gl->gl_lockref.count--; @@ -628,7 +628,7 @@ out_sched: out_unlock: clear_bit(GLF_LOCK, &gl->gl_flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); return; } diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c index 54b66809e818..fc1100781bbc 100644 --- a/fs/gfs2/glops.c +++ b/fs/gfs2/glops.c @@ -89,18 +89,23 @@ static void gfs2_ail_empty_gl(struct gfs2_glock *gl) if (!tr.tr_revokes) return; - /* A shortened, inline version of gfs2_trans_begin() */ + /* A shortened, inline version of gfs2_trans_begin() + * tr->alloced is not set since the transaction structure is + * on the stack */ tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes, sizeof(u64)); tr.tr_ip = (unsigned long)__builtin_return_address(0); sb_start_intwrite(sdp->sd_vfs); - gfs2_log_reserve(sdp, tr.tr_reserved); + if (gfs2_log_reserve(sdp, tr.tr_reserved) < 0) { + sb_end_intwrite(sdp->sd_vfs); + return; + } WARN_ON_ONCE(current->journal_info); current->journal_info = &tr; __gfs2_ail_flush(gl, 0, tr.tr_revokes); gfs2_trans_end(sdp); - gfs2_log_flush(sdp, NULL); + gfs2_log_flush(sdp, NULL, NORMAL_FLUSH); } void gfs2_ail_flush(struct gfs2_glock *gl, bool fsync) @@ -121,7 +126,7 @@ void gfs2_ail_flush(struct gfs2_glock *gl, bool fsync) return; __gfs2_ail_flush(gl, fsync, max_revokes); gfs2_trans_end(sdp); - gfs2_log_flush(sdp, NULL); + gfs2_log_flush(sdp, NULL, NORMAL_FLUSH); } /** @@ -144,7 +149,7 @@ static void rgrp_go_sync(struct gfs2_glock *gl) return; GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE); - gfs2_log_flush(sdp, gl); + gfs2_log_flush(sdp, gl, NORMAL_FLUSH); filemap_fdatawrite_range(mapping, gl->gl_vm.start, gl->gl_vm.end); error = filemap_fdatawait_range(mapping, gl->gl_vm.start, gl->gl_vm.end); mapping_set_error(mapping, error); @@ -206,7 +211,7 @@ static void inode_go_sync(struct gfs2_glock *gl) GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE); - gfs2_log_flush(gl->gl_sbd, gl); + gfs2_log_flush(gl->gl_sbd, gl, NORMAL_FLUSH); filemap_fdatawrite(metamapping); if (ip) { struct address_space *mapping = ip->i_inode.i_mapping; @@ -221,7 +226,7 @@ static void inode_go_sync(struct gfs2_glock *gl) * Writeback of the data mapping may cause the dirty flag to be set * so we have to clear it again here. */ - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(GLF_DIRTY, &gl->gl_flags); } @@ -253,7 +258,7 @@ static void inode_go_inval(struct gfs2_glock *gl, int flags) } if (ip == GFS2_I(gl->gl_sbd->sd_rindex)) { - gfs2_log_flush(gl->gl_sbd, NULL); + gfs2_log_flush(gl->gl_sbd, NULL, NORMAL_FLUSH); gl->gl_sbd->sd_rindex_uptodate = 0; } if (ip && S_ISREG(ip->i_inode.i_mode)) @@ -455,31 +460,39 @@ static void inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl) } /** - * trans_go_sync - promote/demote the transaction glock + * freeze_go_sync - promote/demote the freeze glock * @gl: the glock * @state: the requested state * @flags: * */ -static void trans_go_sync(struct gfs2_glock *gl) +static void freeze_go_sync(struct gfs2_glock *gl) { struct gfs2_sbd *sdp = gl->gl_sbd; + DEFINE_WAIT(wait); - if (gl->gl_state != LM_ST_UNLOCKED && + if (gl->gl_state == LM_ST_SHARED && test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) { - gfs2_meta_syncfs(sdp); - gfs2_log_shutdown(sdp); + atomic_set(&sdp->sd_log_freeze, 1); + wake_up(&sdp->sd_logd_waitq); + do { + prepare_to_wait(&sdp->sd_log_frozen_wait, &wait, + TASK_UNINTERRUPTIBLE); + if (atomic_read(&sdp->sd_log_freeze)) + io_schedule(); + } while(atomic_read(&sdp->sd_log_freeze)); + finish_wait(&sdp->sd_log_frozen_wait, &wait); } } /** - * trans_go_xmote_bh - After promoting/demoting the transaction glock + * freeze_go_xmote_bh - After promoting/demoting the freeze glock * @gl: the glock * */ -static int trans_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh) +static int freeze_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh) { struct gfs2_sbd *sdp = gl->gl_sbd; struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode); @@ -512,7 +525,7 @@ static int trans_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh) * Always returns 0 */ -static int trans_go_demote_ok(const struct gfs2_glock *gl) +static int freeze_go_demote_ok(const struct gfs2_glock *gl) { return 0; } @@ -563,10 +576,10 @@ const struct gfs2_glock_operations gfs2_rgrp_glops = { .go_flags = GLOF_LVB, }; -const struct gfs2_glock_operations gfs2_trans_glops = { - .go_sync = trans_go_sync, - .go_xmote_bh = trans_go_xmote_bh, - .go_demote_ok = trans_go_demote_ok, +const struct gfs2_glock_operations gfs2_freeze_glops = { + .go_sync = freeze_go_sync, + .go_xmote_bh = freeze_go_xmote_bh, + .go_demote_ok = freeze_go_demote_ok, .go_type = LM_TYPE_NONDISK, }; diff --git a/fs/gfs2/glops.h b/fs/gfs2/glops.h index bf95a2dc1662..7455d2629bcb 100644 --- a/fs/gfs2/glops.h +++ b/fs/gfs2/glops.h @@ -15,7 +15,7 @@ extern const struct gfs2_glock_operations gfs2_meta_glops; extern const struct gfs2_glock_operations gfs2_inode_glops; extern const struct gfs2_glock_operations gfs2_rgrp_glops; -extern const struct gfs2_glock_operations gfs2_trans_glops; +extern const struct gfs2_glock_operations gfs2_freeze_glops; extern const struct gfs2_glock_operations gfs2_iopen_glops; extern const struct gfs2_glock_operations gfs2_flock_glops; extern const struct gfs2_glock_operations gfs2_nondisk_glops; diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h index bdf70c18610c..67d310c9ada3 100644 --- a/fs/gfs2/incore.h +++ b/fs/gfs2/incore.h @@ -465,9 +465,7 @@ struct gfs2_trans { unsigned int tr_reserved; unsigned int tr_touched:1; unsigned int tr_attached:1; - - struct gfs2_holder tr_t_gh; - + unsigned int tr_alloced:1; unsigned int tr_num_buf_new; unsigned int tr_num_databuf_new; @@ -682,7 +680,7 @@ struct gfs2_sbd { struct lm_lockstruct sd_lockstruct; struct gfs2_holder sd_live_gh; struct gfs2_glock *sd_rename_gl; - struct gfs2_glock *sd_trans_gl; + struct gfs2_glock *sd_freeze_gl; wait_queue_head_t sd_glock_wait; atomic_t sd_glock_disposal; struct completion sd_locking_init; @@ -730,6 +728,8 @@ struct gfs2_sbd { struct gfs2_holder sd_sc_gh; struct gfs2_holder sd_qc_gh; + struct completion sd_journal_ready; + /* Daemon stuff */ struct task_struct *sd_logd_process; @@ -794,6 +794,12 @@ struct gfs2_sbd { /* For quiescing the filesystem */ struct gfs2_holder sd_freeze_gh; + struct gfs2_holder sd_freeze_root_gh; + struct gfs2_holder sd_thaw_gh; + atomic_t sd_log_freeze; + atomic_t sd_frozen_root; + wait_queue_head_t sd_frozen_root_wait; + wait_queue_head_t sd_log_frozen_wait; char sd_fsname[GFS2_FSNAME_LEN]; char sd_table_name[GFS2_FSNAME_LEN]; diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 28cc7bf6575a..e62e59477884 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -1613,18 +1613,26 @@ int gfs2_permission(struct inode *inode, int mask) { struct gfs2_inode *ip; struct gfs2_holder i_gh; + struct gfs2_sbd *sdp = GFS2_SB(inode); int error; int unlock = 0; + int frozen_root = 0; ip = GFS2_I(inode); if (gfs2_glock_is_locked_by_me(ip->i_gl) == NULL) { - if (mask & MAY_NOT_BLOCK) - return -ECHILD; - error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh); - if (error) - return error; - unlock = 1; + if (unlikely(gfs2_glock_is_held_excl(sdp->sd_freeze_gl) && + inode == sdp->sd_root_dir->d_inode && + atomic_inc_not_zero(&sdp->sd_frozen_root))) + frozen_root = 1; + else { + if (mask & MAY_NOT_BLOCK) + return -ECHILD; + error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &i_gh); + if (error) + return error; + unlock = 1; + } } if ((mask & MAY_WRITE) && IS_IMMUTABLE(inode)) @@ -1633,6 +1641,8 @@ int gfs2_permission(struct inode *inode, int mask) error = generic_permission(inode, mask); if (unlock) gfs2_glock_dq_uninit(&i_gh); + else if (frozen_root && atomic_dec_and_test(&sdp->sd_frozen_root)) + wake_up(&sdp->sd_frozen_root_wait); return error; } @@ -1805,19 +1815,29 @@ static int gfs2_getattr(struct vfsmount *mnt, struct dentry *dentry, struct inode *inode = dentry->d_inode; struct gfs2_inode *ip = GFS2_I(inode); struct gfs2_holder gh; + struct gfs2_sbd *sdp = GFS2_SB(inode); int error; int unlock = 0; + int frozen_root = 0; if (gfs2_glock_is_locked_by_me(ip->i_gl) == NULL) { - error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh); - if (error) - return error; - unlock = 1; + if (unlikely(gfs2_glock_is_held_excl(sdp->sd_freeze_gl) && + inode == sdp->sd_root_dir->d_inode && + atomic_inc_not_zero(&sdp->sd_frozen_root))) + frozen_root = 1; + else { + error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh); + if (error) + return error; + unlock = 1; + } } generic_fillattr(inode, stat); if (unlock) gfs2_glock_dq_uninit(&gh); + else if (frozen_root && atomic_dec_and_test(&sdp->sd_frozen_root)) + wake_up(&sdp->sd_frozen_root_wait); return 0; } diff --git a/fs/gfs2/lock_dlm.c b/fs/gfs2/lock_dlm.c index c1eb555dc588..91f274de1246 100644 --- a/fs/gfs2/lock_dlm.c +++ b/fs/gfs2/lock_dlm.c @@ -1134,7 +1134,7 @@ static void gdlm_recover_done(void *arg, struct dlm_slot *slots, int num_slots, queue_delayed_work(gfs2_control_wq, &sdp->sd_control_work, 0); clear_bit(DFL_DLM_RECOVERY, &ls->ls_recover_flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&ls->ls_recover_flags, DFL_DLM_RECOVERY); spin_unlock(&ls->ls_recover_spin); } @@ -1271,7 +1271,7 @@ static int gdlm_mount(struct gfs2_sbd *sdp, const char *table) ls->ls_first = !!test_bit(DFL_FIRST_MOUNT, &ls->ls_recover_flags); clear_bit(SDF_NOJOURNALID, &sdp->sd_flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&sdp->sd_flags, SDF_NOJOURNALID); return 0; diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c index 4a14d504ef83..3966fadbcebd 100644 --- a/fs/gfs2/log.c +++ b/fs/gfs2/log.c @@ -301,6 +301,23 @@ static void ail2_empty(struct gfs2_sbd *sdp, unsigned int new_tail) } /** + * gfs2_log_release - Release a given number of log blocks + * @sdp: The GFS2 superblock + * @blks: The number of blocks + * + */ + +void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks) +{ + + atomic_add(blks, &sdp->sd_log_blks_free); + trace_gfs2_log_blocks(sdp, blks); + gfs2_assert_withdraw(sdp, atomic_read(&sdp->sd_log_blks_free) <= + sdp->sd_jdesc->jd_blocks); + up_read(&sdp->sd_log_flush_lock); +} + +/** * gfs2_log_reserve - Make a log reservation * @sdp: The GFS2 superblock * @blks: The number of blocks to reserve @@ -358,7 +375,10 @@ retry: wake_up(&sdp->sd_log_waitq); down_read(&sdp->sd_log_flush_lock); - + if (unlikely(!test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags))) { + gfs2_log_release(sdp, blks); + return -EROFS; + } return 0; } @@ -671,7 +691,8 @@ static void log_write_header(struct gfs2_sbd *sdp, u32 flags) * */ -void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl) +void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl, + enum gfs2_flush_type type) { struct gfs2_trans *tr; @@ -723,6 +744,42 @@ void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl) } spin_unlock(&sdp->sd_ail_lock); gfs2_log_unlock(sdp); + + if (atomic_read(&sdp->sd_log_freeze)) + type = FREEZE_FLUSH; + if (type != NORMAL_FLUSH) { + if (!sdp->sd_log_idle) { + for (;;) { + gfs2_ail1_start(sdp); + gfs2_ail1_wait(sdp); + if (gfs2_ail1_empty(sdp)) + break; + } + atomic_dec(&sdp->sd_log_blks_free); /* Adjust for unreserved buffer */ + trace_gfs2_log_blocks(sdp, -1); + sdp->sd_log_flush_wrapped = 0; + log_write_header(sdp, 0); + sdp->sd_log_head = sdp->sd_log_flush_head; + } + if (type == SHUTDOWN_FLUSH || type == FREEZE_FLUSH) + gfs2_log_shutdown(sdp); + if (type == FREEZE_FLUSH) { + int error; + + atomic_set(&sdp->sd_log_freeze, 0); + wake_up(&sdp->sd_log_frozen_wait); + error = gfs2_glock_nq_init(sdp->sd_freeze_gl, + LM_ST_SHARED, 0, + &sdp->sd_thaw_gh); + if (error) { + printk(KERN_INFO "GFS2: couln't get freeze lock : %d\n", error); + gfs2_assert_withdraw(sdp, 0); + } + else + gfs2_glock_dq_uninit(&sdp->sd_thaw_gh); + } + } + trace_gfs2_log_flush(sdp, 0); up_write(&sdp->sd_log_flush_lock); @@ -761,7 +818,7 @@ static void log_refund(struct gfs2_sbd *sdp, struct gfs2_trans *tr) if (sdp->sd_log_tr) { gfs2_merge_trans(sdp->sd_log_tr, tr); } else if (tr->tr_num_buf_new || tr->tr_num_databuf_new) { - gfs2_assert_withdraw(sdp, tr->tr_t_gh.gh_gl); + gfs2_assert_withdraw(sdp, tr->tr_alloced); sdp->sd_log_tr = tr; tr->tr_attached = 1; } @@ -813,8 +870,6 @@ void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) void gfs2_log_shutdown(struct gfs2_sbd *sdp) { - down_write(&sdp->sd_log_flush_lock); - gfs2_assert_withdraw(sdp, !sdp->sd_log_blks_reserved); gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke); gfs2_assert_withdraw(sdp, list_empty(&sdp->sd_ail1_list)); @@ -824,38 +879,16 @@ void gfs2_log_shutdown(struct gfs2_sbd *sdp) log_write_header(sdp, GFS2_LOG_HEAD_UNMOUNT); - gfs2_assert_warn(sdp, atomic_read(&sdp->sd_log_blks_free) == sdp->sd_jdesc->jd_blocks); gfs2_assert_warn(sdp, sdp->sd_log_head == sdp->sd_log_tail); gfs2_assert_warn(sdp, list_empty(&sdp->sd_ail2_list)); sdp->sd_log_head = sdp->sd_log_flush_head; sdp->sd_log_tail = sdp->sd_log_head; - - up_write(&sdp->sd_log_flush_lock); -} - - -/** - * gfs2_meta_syncfs - sync all the buffers in a filesystem - * @sdp: the filesystem - * - */ - -void gfs2_meta_syncfs(struct gfs2_sbd *sdp) -{ - gfs2_log_flush(sdp, NULL); - for (;;) { - gfs2_ail1_start(sdp); - gfs2_ail1_wait(sdp); - if (gfs2_ail1_empty(sdp)) - break; - } - gfs2_log_flush(sdp, NULL); } static inline int gfs2_jrnl_flush_reqd(struct gfs2_sbd *sdp) { - return (atomic_read(&sdp->sd_log_pinned) >= atomic_read(&sdp->sd_log_thresh1)); + return (atomic_read(&sdp->sd_log_pinned) >= atomic_read(&sdp->sd_log_thresh1) || atomic_read(&sdp->sd_log_freeze)); } static inline int gfs2_ail_flush_reqd(struct gfs2_sbd *sdp) @@ -882,14 +915,14 @@ int gfs2_logd(void *data) if (gfs2_jrnl_flush_reqd(sdp) || t == 0) { gfs2_ail1_empty(sdp); - gfs2_log_flush(sdp, NULL); + gfs2_log_flush(sdp, NULL, NORMAL_FLUSH); } if (gfs2_ail_flush_reqd(sdp)) { gfs2_ail1_start(sdp); gfs2_ail1_wait(sdp); gfs2_ail1_empty(sdp); - gfs2_log_flush(sdp, NULL); + gfs2_log_flush(sdp, NULL, NORMAL_FLUSH); } if (!gfs2_ail_flush_reqd(sdp)) diff --git a/fs/gfs2/log.h b/fs/gfs2/log.h index 37216634f0aa..9499a6049212 100644 --- a/fs/gfs2/log.h +++ b/fs/gfs2/log.h @@ -63,14 +63,21 @@ extern void gfs2_ordered_del_inode(struct gfs2_inode *ip); extern unsigned int gfs2_struct2blk(struct gfs2_sbd *sdp, unsigned int nstruct, unsigned int ssize); +extern void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks); extern int gfs2_log_reserve(struct gfs2_sbd *sdp, unsigned int blks); -extern void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl); +enum gfs2_flush_type { + NORMAL_FLUSH = 0, + SYNC_FLUSH, + SHUTDOWN_FLUSH, + FREEZE_FLUSH +}; +extern void gfs2_log_flush(struct gfs2_sbd *sdp, struct gfs2_glock *gl, + enum gfs2_flush_type type); extern void gfs2_log_commit(struct gfs2_sbd *sdp, struct gfs2_trans *trans); extern void gfs2_remove_from_ail(struct gfs2_bufdata *bd); extern void gfs2_ail1_flush(struct gfs2_sbd *sdp, struct writeback_control *wbc); extern void gfs2_log_shutdown(struct gfs2_sbd *sdp); -extern void gfs2_meta_syncfs(struct gfs2_sbd *sdp); extern int gfs2_logd(void *data); extern void gfs2_add_revoke(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd); extern void gfs2_write_revokes(struct gfs2_sbd *sdp); diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c index a294d8d8bcd4..2c1ae861dc94 100644 --- a/fs/gfs2/lops.c +++ b/fs/gfs2/lops.c @@ -75,7 +75,7 @@ static void maybe_release_space(struct gfs2_bufdata *bd) unsigned int index = bd->bd_bh->b_blocknr - gl->gl_name.ln_number; struct gfs2_bitmap *bi = rgd->rd_bits + index; - if (bi->bi_clone == 0) + if (bi->bi_clone == NULL) return; if (sdp->sd_args.ar_discard) gfs2_rgrp_send_discards(sdp, rgd->rd_data0, bd->bd_bh, bi, 1, NULL); diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c index 2cf09b63a6b4..b984a6e190bc 100644 --- a/fs/gfs2/meta_io.c +++ b/fs/gfs2/meta_io.c @@ -136,7 +136,8 @@ struct buffer_head *gfs2_getbuf(struct gfs2_glock *gl, u64 blkno, int create) yield(); } } else { - page = find_lock_page(mapping, index); + page = find_get_page_flags(mapping, index, + FGP_LOCK|FGP_ACCESSED); if (!page) return NULL; } @@ -153,7 +154,6 @@ struct buffer_head *gfs2_getbuf(struct gfs2_glock *gl, u64 blkno, int create) map_bh(bh, sdp->sd_vfs, blkno); unlock_page(page); - mark_page_accessed(page); page_cache_release(page); return bh; diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c index 22f954051bb8..bc564c0d6d16 100644 --- a/fs/gfs2/ops_fstype.c +++ b/fs/gfs2/ops_fstype.c @@ -94,6 +94,7 @@ static struct gfs2_sbd *init_sbd(struct super_block *sb) INIT_LIST_HEAD(&sdp->sd_jindex_list); spin_lock_init(&sdp->sd_jindex_spin); mutex_init(&sdp->sd_jindex_mutex); + init_completion(&sdp->sd_journal_ready); INIT_LIST_HEAD(&sdp->sd_quota_list); mutex_init(&sdp->sd_quota_mutex); @@ -129,6 +130,10 @@ static struct gfs2_sbd *init_sbd(struct super_block *sb) init_rwsem(&sdp->sd_log_flush_lock); atomic_set(&sdp->sd_log_in_flight, 0); init_waitqueue_head(&sdp->sd_log_flush_wait); + init_waitqueue_head(&sdp->sd_log_frozen_wait); + atomic_set(&sdp->sd_log_freeze, 0); + atomic_set(&sdp->sd_frozen_root, 0); + init_waitqueue_head(&sdp->sd_frozen_root_wait); return sdp; } @@ -419,8 +424,8 @@ static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh, goto fail_live; } - error = gfs2_glock_get(sdp, GFS2_TRANS_LOCK, &gfs2_trans_glops, - CREATE, &sdp->sd_trans_gl); + error = gfs2_glock_get(sdp, GFS2_FREEZE_LOCK, &gfs2_freeze_glops, + CREATE, &sdp->sd_freeze_gl); if (error) { fs_err(sdp, "can't create transaction glock: %d\n", error); goto fail_rename; @@ -429,7 +434,7 @@ static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh, return 0; fail_trans: - gfs2_glock_put(sdp->sd_trans_gl); + gfs2_glock_put(sdp->sd_freeze_gl); fail_rename: gfs2_glock_put(sdp->sd_rename_gl); fail_live: @@ -755,7 +760,15 @@ static int init_journal(struct gfs2_sbd *sdp, int undo) set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags); gfs2_glock_dq_uninit(&ji_gh); jindex = 0; - + if (!sdp->sd_args.ar_spectator) { + error = gfs2_glock_nq_init(sdp->sd_freeze_gl, LM_ST_SHARED, 0, + &sdp->sd_thaw_gh); + if (error) { + fs_err(sdp, "can't acquire freeze glock: %d\n", error); + goto fail_jinode_gh; + } + } + gfs2_glock_dq_uninit(&sdp->sd_thaw_gh); return 0; fail_jinode_gh: @@ -784,6 +797,7 @@ static int init_inodes(struct gfs2_sbd *sdp, int undo) goto fail_qinode; error = init_journal(sdp, undo); + complete_all(&sdp->sd_journal_ready); if (error) goto fail; @@ -1200,6 +1214,7 @@ fail_sb: fail_locking: init_locking(sdp, &mount_gh, UNDO); fail_lm: + complete_all(&sdp->sd_journal_ready); gfs2_gl_hash_clear(sdp); gfs2_lm_unmount(sdp); fail_debug: @@ -1380,7 +1395,7 @@ static void gfs2_kill_sb(struct super_block *sb) return; } - gfs2_meta_syncfs(sdp); + gfs2_log_flush(sdp, NULL, SYNC_FLUSH); dput(sdp->sd_root_dir); dput(sdp->sd_master_dir); sdp->sd_root_dir = NULL; diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c index c4effff7cf55..64b29f7f6b4c 100644 --- a/fs/gfs2/quota.c +++ b/fs/gfs2/quota.c @@ -778,6 +778,7 @@ get_a_page: i_size_write(inode, size); inode->i_mtime = inode->i_atime = CURRENT_TIME; mark_inode_dirty(inode); + set_bit(QDF_REFRESH, &qd->qd_flags); return 0; unlock_out: @@ -879,7 +880,7 @@ out: gfs2_glock_dq_uninit(&ghs[qx]); mutex_unlock(&ip->i_inode.i_mutex); kfree(ghs); - gfs2_log_flush(ip->i_gl->gl_sbd, ip->i_gl); + gfs2_log_flush(ip->i_gl->gl_sbd, ip->i_gl, NORMAL_FLUSH); return error; } diff --git a/fs/gfs2/recovery.c b/fs/gfs2/recovery.c index 7ad4094d68c0..94555d4c5698 100644 --- a/fs/gfs2/recovery.c +++ b/fs/gfs2/recovery.c @@ -454,7 +454,7 @@ void gfs2_recover_func(struct work_struct *work) struct gfs2_inode *ip = GFS2_I(jd->jd_inode); struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); struct gfs2_log_header_host head; - struct gfs2_holder j_gh, ji_gh, t_gh; + struct gfs2_holder j_gh, ji_gh, thaw_gh; unsigned long t; int ro = 0; unsigned int pass; @@ -508,11 +508,11 @@ void gfs2_recover_func(struct work_struct *work) t = jiffies; - /* Acquire a shared hold on the transaction lock */ + /* Acquire a shared hold on the freeze lock */ - error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED, - LM_FLAG_NOEXP | LM_FLAG_PRIORITY | - GL_NOCACHE, &t_gh); + error = gfs2_glock_nq_init(sdp->sd_freeze_gl, LM_ST_SHARED, + LM_FLAG_NOEXP | LM_FLAG_PRIORITY, + &thaw_gh); if (error) goto fail_gunlock_ji; @@ -538,7 +538,7 @@ void gfs2_recover_func(struct work_struct *work) fs_warn(sdp, "jid=%u: Can't replay: read-only block " "device\n", jd->jd_jid); error = -EROFS; - goto fail_gunlock_tr; + goto fail_gunlock_thaw; } fs_info(sdp, "jid=%u: Replaying journal...\n", jd->jd_jid); @@ -549,14 +549,14 @@ void gfs2_recover_func(struct work_struct *work) head.lh_blkno, pass); lops_after_scan(jd, error, pass); if (error) - goto fail_gunlock_tr; + goto fail_gunlock_thaw; } error = clean_journal(jd, &head); if (error) - goto fail_gunlock_tr; + goto fail_gunlock_thaw; - gfs2_glock_dq_uninit(&t_gh); + gfs2_glock_dq_uninit(&thaw_gh); t = DIV_ROUND_UP(jiffies - t, HZ); fs_info(sdp, "jid=%u: Journal replayed in %lus\n", jd->jd_jid, t); @@ -572,8 +572,8 @@ void gfs2_recover_func(struct work_struct *work) fs_info(sdp, "jid=%u: Done\n", jd->jd_jid); goto done; -fail_gunlock_tr: - gfs2_glock_dq_uninit(&t_gh); +fail_gunlock_thaw: + gfs2_glock_dq_uninit(&thaw_gh); fail_gunlock_ji: if (jlocked) { gfs2_glock_dq_uninit(&ji_gh); @@ -587,7 +587,7 @@ fail: gfs2_recovery_done(sdp, jd->jd_jid, LM_RD_GAVEUP); done: clear_bit(JDF_RECOVERY, &jd->jd_flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&jd->jd_flags, JDF_RECOVERY); } diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c index 281a7716e3f3..db629d1bd1bd 100644 --- a/fs/gfs2/rgrp.c +++ b/fs/gfs2/rgrp.c @@ -2001,7 +2001,7 @@ next_rgrp: } /* Flushing the log may release space */ if (loops == 2) - gfs2_log_flush(sdp, NULL); + gfs2_log_flush(sdp, NULL, NORMAL_FLUSH); } return -ENOSPC; diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index de8afad89e51..1319b5c4ec68 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -399,7 +399,7 @@ int gfs2_make_fs_rw(struct gfs2_sbd *sdp) { struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode); struct gfs2_glock *j_gl = ip->i_gl; - struct gfs2_holder t_gh; + struct gfs2_holder thaw_gh; struct gfs2_log_header_host head; int error; @@ -407,7 +407,8 @@ int gfs2_make_fs_rw(struct gfs2_sbd *sdp) if (error) return error; - error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED, 0, &t_gh); + error = gfs2_glock_nq_init(sdp->sd_freeze_gl, LM_ST_SHARED, 0, + &thaw_gh); if (error) goto fail_threads; @@ -433,13 +434,13 @@ int gfs2_make_fs_rw(struct gfs2_sbd *sdp) set_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags); - gfs2_glock_dq_uninit(&t_gh); + gfs2_glock_dq_uninit(&thaw_gh); return 0; fail: - t_gh.gh_flags |= GL_NOCACHE; - gfs2_glock_dq_uninit(&t_gh); + thaw_gh.gh_flags |= GL_NOCACHE; + gfs2_glock_dq_uninit(&thaw_gh); fail_threads: kthread_stop(sdp->sd_quotad_process); kthread_stop(sdp->sd_logd_process); @@ -635,15 +636,21 @@ struct lfcc { */ static int gfs2_lock_fs_check_clean(struct gfs2_sbd *sdp, - struct gfs2_holder *t_gh) + struct gfs2_holder *freeze_gh) { struct gfs2_inode *ip; struct gfs2_jdesc *jd; struct lfcc *lfcc; LIST_HEAD(list); struct gfs2_log_header_host lh; + struct gfs2_inode *dip = GFS2_I(sdp->sd_root_dir->d_inode); int error; + error = gfs2_glock_nq_init(dip->i_gl, LM_ST_SHARED, 0, + &sdp->sd_freeze_root_gh); + if (error) + return error; + atomic_set(&sdp->sd_frozen_root, 1); list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { lfcc = kmalloc(sizeof(struct lfcc), GFP_KERNEL); if (!lfcc) { @@ -659,8 +666,8 @@ static int gfs2_lock_fs_check_clean(struct gfs2_sbd *sdp, list_add(&lfcc->list, &list); } - error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_DEFERRED, - GL_NOCACHE, t_gh); + error = gfs2_glock_nq_init(sdp->sd_freeze_gl, LM_ST_EXCLUSIVE, + GL_NOCACHE, freeze_gh); list_for_each_entry(jd, &sdp->sd_jindex_list, jd_list) { error = gfs2_jdesc_check(jd); @@ -676,7 +683,7 @@ static int gfs2_lock_fs_check_clean(struct gfs2_sbd *sdp, } if (error) - gfs2_glock_dq_uninit(t_gh); + gfs2_glock_dq_uninit(freeze_gh); out: while (!list_empty(&list)) { @@ -685,6 +692,11 @@ out: gfs2_glock_dq_uninit(&lfcc->gh); kfree(lfcc); } + if (error) { + atomic_dec(&sdp->sd_frozen_root); + wait_event(sdp->sd_frozen_root_wait, atomic_read(&sdp->sd_frozen_root) == 0); + gfs2_glock_dq_uninit(&sdp->sd_freeze_root_gh); + } return error; } @@ -742,7 +754,7 @@ static int gfs2_write_inode(struct inode *inode, struct writeback_control *wbc) int ret = 0; if (wbc->sync_mode == WB_SYNC_ALL) - gfs2_log_flush(GFS2_SB(inode), ip->i_gl); + gfs2_log_flush(GFS2_SB(inode), ip->i_gl, NORMAL_FLUSH); if (bdi->dirty_exceeded) gfs2_ail1_flush(sdp, wbc); else @@ -822,9 +834,18 @@ out: static int gfs2_make_fs_ro(struct gfs2_sbd *sdp) { - struct gfs2_holder t_gh; + struct gfs2_holder thaw_gh; int error; + error = gfs2_glock_nq_init(sdp->sd_freeze_gl, LM_ST_SHARED, GL_NOCACHE, + &thaw_gh); + if (error && !test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) + return error; + + down_write(&sdp->sd_log_flush_lock); + clear_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags); + up_write(&sdp->sd_log_flush_lock); + kthread_stop(sdp->sd_quotad_process); kthread_stop(sdp->sd_logd_process); @@ -832,18 +853,11 @@ static int gfs2_make_fs_ro(struct gfs2_sbd *sdp) gfs2_quota_sync(sdp->sd_vfs, 0); gfs2_statfs_sync(sdp->sd_vfs, 0); - error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED, GL_NOCACHE, - &t_gh); - if (error && !test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) - return error; - - gfs2_meta_syncfs(sdp); - gfs2_log_shutdown(sdp); - - clear_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags); + gfs2_log_flush(sdp, NULL, SHUTDOWN_FLUSH); + gfs2_assert_warn(sdp, atomic_read(&sdp->sd_log_blks_free) == sdp->sd_jdesc->jd_blocks); - if (t_gh.gh_gl) - gfs2_glock_dq_uninit(&t_gh); + if (thaw_gh.gh_gl) + gfs2_glock_dq_uninit(&thaw_gh); gfs2_quota_cleanup(sdp); @@ -900,7 +914,7 @@ restart: iput(sdp->sd_quota_inode); gfs2_glock_put(sdp->sd_rename_gl); - gfs2_glock_put(sdp->sd_trans_gl); + gfs2_glock_put(sdp->sd_freeze_gl); if (!sdp->sd_args.ar_spectator) { gfs2_glock_dq_uninit(&sdp->sd_journal_gh); @@ -935,8 +949,8 @@ static int gfs2_sync_fs(struct super_block *sb, int wait) struct gfs2_sbd *sdp = sb->s_fs_info; gfs2_quota_sync(sb, -1); - if (wait && sdp) - gfs2_log_flush(sdp, NULL); + if (wait && sdp && !atomic_read(&sdp->sd_log_freeze)) + gfs2_log_flush(sdp, NULL, NORMAL_FLUSH); return 0; } @@ -986,6 +1000,9 @@ static int gfs2_unfreeze(struct super_block *sb) struct gfs2_sbd *sdp = sb->s_fs_info; gfs2_glock_dq_uninit(&sdp->sd_freeze_gh); + atomic_dec(&sdp->sd_frozen_root); + wait_event(sdp->sd_frozen_root_wait, atomic_read(&sdp->sd_frozen_root) == 0); + gfs2_glock_dq_uninit(&sdp->sd_freeze_root_gh); return 0; } @@ -1525,7 +1542,7 @@ static void gfs2_evict_inode(struct inode *inode) goto out_unlock; out_truncate: - gfs2_log_flush(sdp, ip->i_gl); + gfs2_log_flush(sdp, ip->i_gl, NORMAL_FLUSH); if (test_bit(GLF_DIRTY, &ip->i_gl->gl_flags)) { struct address_space *metamapping = gfs2_glock2aspace(ip->i_gl); filemap_fdatawrite(metamapping); diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c index de25d5577e5d..3ab566ba5696 100644 --- a/fs/gfs2/sys.c +++ b/fs/gfs2/sys.c @@ -240,8 +240,8 @@ static ssize_t demote_rq_store(struct gfs2_sbd *sdp, const char *buf, size_t len if (gltype > LM_TYPE_JOURNAL) return -EINVAL; - if (gltype == LM_TYPE_NONDISK && glnum == GFS2_TRANS_LOCK) - glops = &gfs2_trans_glops; + if (gltype == LM_TYPE_NONDISK && glnum == GFS2_FREEZE_LOCK) + glops = &gfs2_freeze_glops; else glops = gfs2_glops_list[gltype]; if (glops == NULL) @@ -333,7 +333,7 @@ static ssize_t block_store(struct gfs2_sbd *sdp, const char *buf, size_t len) set_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags); else if (val == 0) { clear_bit(DFL_BLOCK_LOCKS, &ls->ls_recover_flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); gfs2_glock_thaw(sdp); } else { ret = -EINVAL; @@ -407,6 +407,9 @@ int gfs2_recover_set(struct gfs2_sbd *sdp, unsigned jid) struct gfs2_jdesc *jd; int rv; + /* Wait for our primary journal to be initialized */ + wait_for_completion(&sdp->sd_journal_ready); + spin_lock(&sdp->sd_jindex_spin); rv = -EBUSY; if (sdp->sd_jdesc->jd_jid == jid) @@ -482,7 +485,7 @@ static ssize_t jid_store(struct gfs2_sbd *sdp, const char *buf, size_t len) rv = jid = -EINVAL; sdp->sd_lockstruct.ls_jid = jid; clear_bit(SDF_NOJOURNALID, &sdp->sd_flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&sdp->sd_flags, SDF_NOJOURNALID); out: spin_unlock(&sdp->sd_jindex_spin); diff --git a/fs/gfs2/trans.c b/fs/gfs2/trans.c index bead90d27bad..0546ab4e28e8 100644 --- a/fs/gfs2/trans.c +++ b/fs/gfs2/trans.c @@ -48,6 +48,7 @@ int gfs2_trans_begin(struct gfs2_sbd *sdp, unsigned int blocks, tr->tr_blocks = blocks; tr->tr_revokes = revokes; tr->tr_reserved = 1; + tr->tr_alloced = 1; if (blocks) tr->tr_reserved += 6 + blocks; if (revokes) @@ -57,48 +58,22 @@ int gfs2_trans_begin(struct gfs2_sbd *sdp, unsigned int blocks, INIT_LIST_HEAD(&tr->tr_buf); sb_start_intwrite(sdp->sd_vfs); - gfs2_holder_init(sdp->sd_trans_gl, LM_ST_SHARED, 0, &tr->tr_t_gh); - - error = gfs2_glock_nq(&tr->tr_t_gh); - if (error) - goto fail_holder_uninit; error = gfs2_log_reserve(sdp, tr->tr_reserved); if (error) - goto fail_gunlock; + goto fail; current->journal_info = tr; return 0; -fail_gunlock: - gfs2_glock_dq(&tr->tr_t_gh); - -fail_holder_uninit: +fail: sb_end_intwrite(sdp->sd_vfs); - gfs2_holder_uninit(&tr->tr_t_gh); kfree(tr); return error; } -/** - * gfs2_log_release - Release a given number of log blocks - * @sdp: The GFS2 superblock - * @blks: The number of blocks - * - */ - -static void gfs2_log_release(struct gfs2_sbd *sdp, unsigned int blks) -{ - - atomic_add(blks, &sdp->sd_log_blks_free); - trace_gfs2_log_blocks(sdp, blks); - gfs2_assert_withdraw(sdp, atomic_read(&sdp->sd_log_blks_free) <= - sdp->sd_jdesc->jd_blocks); - up_read(&sdp->sd_log_flush_lock); -} - static void gfs2_print_trans(const struct gfs2_trans *tr) { pr_warn("Transaction created at: %pSR\n", (void *)tr->tr_ip); @@ -119,11 +94,8 @@ void gfs2_trans_end(struct gfs2_sbd *sdp) if (!tr->tr_touched) { gfs2_log_release(sdp, tr->tr_reserved); - if (tr->tr_t_gh.gh_gl) { - gfs2_glock_dq(&tr->tr_t_gh); - gfs2_holder_uninit(&tr->tr_t_gh); + if (tr->tr_alloced) kfree(tr); - } sb_end_intwrite(sdp->sd_vfs); return; } @@ -137,16 +109,12 @@ void gfs2_trans_end(struct gfs2_sbd *sdp) gfs2_print_trans(tr); gfs2_log_commit(sdp, tr); - if (tr->tr_t_gh.gh_gl) { - gfs2_glock_dq(&tr->tr_t_gh); - gfs2_holder_uninit(&tr->tr_t_gh); - if (!tr->tr_attached) + if (tr->tr_alloced && !tr->tr_attached) kfree(tr); - } up_read(&sdp->sd_log_flush_lock); if (sdp->sd_vfs->s_flags & MS_SYNCHRONOUS) - gfs2_log_flush(sdp, NULL); + gfs2_log_flush(sdp, NULL, NORMAL_FLUSH); sb_end_intwrite(sdp->sd_vfs); } diff --git a/fs/hfsplus/attributes.c b/fs/hfsplus/attributes.c index caf89a7be0a1..e5b221de7de6 100644 --- a/fs/hfsplus/attributes.c +++ b/fs/hfsplus/attributes.c @@ -54,14 +54,11 @@ int hfsplus_attr_build_key(struct super_block *sb, hfsplus_btree_key *key, memset(key, 0, sizeof(struct hfsplus_attr_key)); key->attr.cnid = cpu_to_be32(cnid); if (name) { - len = strlen(name); - if (len > HFSPLUS_ATTR_MAX_STRLEN) { - pr_err("invalid xattr name's length\n"); - return -EINVAL; - } - hfsplus_asc2uni(sb, + int res = hfsplus_asc2uni(sb, (struct hfsplus_unistr *)&key->attr.key_name, - HFSPLUS_ATTR_MAX_STRLEN, name, len); + HFSPLUS_ATTR_MAX_STRLEN, name, strlen(name)); + if (res) + return res; len = be16_to_cpu(key->attr.key_name.length); } else { key->attr.key_name.length = 0; @@ -82,31 +79,6 @@ int hfsplus_attr_build_key(struct super_block *sb, hfsplus_btree_key *key, return 0; } -void hfsplus_attr_build_key_uni(hfsplus_btree_key *key, - u32 cnid, - struct hfsplus_attr_unistr *name) -{ - int ustrlen; - - memset(key, 0, sizeof(struct hfsplus_attr_key)); - ustrlen = be16_to_cpu(name->length); - key->attr.cnid = cpu_to_be32(cnid); - key->attr.key_name.length = cpu_to_be16(ustrlen); - ustrlen *= 2; - memcpy(key->attr.key_name.unicode, name->unicode, ustrlen); - - /* The length of the key, as stored in key_len field, does not include - * the size of the key_len field itself. - * So, offsetof(hfsplus_attr_key, key_name) is a trick because - * it takes into consideration key_len field (__be16) of - * hfsplus_attr_key structure instead of length field (__be16) of - * hfsplus_attr_unistr structure. - */ - key->key_len = - cpu_to_be16(offsetof(struct hfsplus_attr_key, key_name) + - ustrlen); -} - hfsplus_attr_entry *hfsplus_alloc_attr_entry(void) { return kmem_cache_alloc(hfsplus_attr_tree_cachep, GFP_KERNEL); diff --git a/fs/hfsplus/bnode.c b/fs/hfsplus/bnode.c index 11c860204520..759708fd9331 100644 --- a/fs/hfsplus/bnode.c +++ b/fs/hfsplus/bnode.c @@ -27,13 +27,13 @@ void hfs_bnode_read(struct hfs_bnode *node, void *buf, int off, int len) pagep = node->page + (off >> PAGE_CACHE_SHIFT); off &= ~PAGE_CACHE_MASK; - l = min(len, (int)PAGE_CACHE_SIZE - off); + l = min_t(int, len, PAGE_CACHE_SIZE - off); memcpy(buf, kmap(*pagep) + off, l); kunmap(*pagep); while ((len -= l) != 0) { buf += l; - l = min(len, (int)PAGE_CACHE_SIZE); + l = min_t(int, len, PAGE_CACHE_SIZE); memcpy(buf, kmap(*++pagep), l); kunmap(*pagep); } @@ -80,14 +80,14 @@ void hfs_bnode_write(struct hfs_bnode *node, void *buf, int off, int len) pagep = node->page + (off >> PAGE_CACHE_SHIFT); off &= ~PAGE_CACHE_MASK; - l = min(len, (int)PAGE_CACHE_SIZE - off); + l = min_t(int, len, PAGE_CACHE_SIZE - off); memcpy(kmap(*pagep) + off, buf, l); set_page_dirty(*pagep); kunmap(*pagep); while ((len -= l) != 0) { buf += l; - l = min(len, (int)PAGE_CACHE_SIZE); + l = min_t(int, len, PAGE_CACHE_SIZE); memcpy(kmap(*++pagep), buf, l); set_page_dirty(*pagep); kunmap(*pagep); @@ -110,13 +110,13 @@ void hfs_bnode_clear(struct hfs_bnode *node, int off, int len) pagep = node->page + (off >> PAGE_CACHE_SHIFT); off &= ~PAGE_CACHE_MASK; - l = min(len, (int)PAGE_CACHE_SIZE - off); + l = min_t(int, len, PAGE_CACHE_SIZE - off); memset(kmap(*pagep) + off, 0, l); set_page_dirty(*pagep); kunmap(*pagep); while ((len -= l) != 0) { - l = min(len, (int)PAGE_CACHE_SIZE); + l = min_t(int, len, PAGE_CACHE_SIZE); memset(kmap(*++pagep), 0, l); set_page_dirty(*pagep); kunmap(*pagep); @@ -142,14 +142,14 @@ void hfs_bnode_copy(struct hfs_bnode *dst_node, int dst, dst &= ~PAGE_CACHE_MASK; if (src == dst) { - l = min(len, (int)PAGE_CACHE_SIZE - src); + l = min_t(int, len, PAGE_CACHE_SIZE - src); memcpy(kmap(*dst_page) + src, kmap(*src_page) + src, l); kunmap(*src_page); set_page_dirty(*dst_page); kunmap(*dst_page); while ((len -= l) != 0) { - l = min(len, (int)PAGE_CACHE_SIZE); + l = min_t(int, len, PAGE_CACHE_SIZE); memcpy(kmap(*++dst_page), kmap(*++src_page), l); kunmap(*src_page); set_page_dirty(*dst_page); @@ -251,7 +251,7 @@ void hfs_bnode_move(struct hfs_bnode *node, int dst, int src, int len) dst &= ~PAGE_CACHE_MASK; if (src == dst) { - l = min(len, (int)PAGE_CACHE_SIZE - src); + l = min_t(int, len, PAGE_CACHE_SIZE - src); memmove(kmap(*dst_page) + src, kmap(*src_page) + src, l); kunmap(*src_page); @@ -259,7 +259,7 @@ void hfs_bnode_move(struct hfs_bnode *node, int dst, int src, int len) kunmap(*dst_page); while ((len -= l) != 0) { - l = min(len, (int)PAGE_CACHE_SIZE); + l = min_t(int, len, PAGE_CACHE_SIZE); memmove(kmap(*++dst_page), kmap(*++src_page), l); kunmap(*src_page); @@ -386,9 +386,8 @@ struct hfs_bnode *hfs_bnode_findhash(struct hfs_btree *tree, u32 cnid) struct hfs_bnode *node; if (cnid >= tree->node_count) { - pr_err("request for non-existent node " - "%d in B*Tree\n", - cnid); + pr_err("request for non-existent node %d in B*Tree\n", + cnid); return NULL; } @@ -409,9 +408,8 @@ static struct hfs_bnode *__hfs_bnode_create(struct hfs_btree *tree, u32 cnid) loff_t off; if (cnid >= tree->node_count) { - pr_err("request for non-existent node " - "%d in B*Tree\n", - cnid); + pr_err("request for non-existent node %d in B*Tree\n", + cnid); return NULL; } @@ -602,7 +600,7 @@ struct hfs_bnode *hfs_bnode_create(struct hfs_btree *tree, u32 num) pagep = node->page; memset(kmap(*pagep) + node->page_offset, 0, - min((int)PAGE_CACHE_SIZE, (int)tree->node_size)); + min_t(int, PAGE_CACHE_SIZE, tree->node_size)); set_page_dirty(*pagep); kunmap(*pagep); for (i = 1; i < tree->pages_per_bnode; i++) { @@ -648,8 +646,8 @@ void hfs_bnode_put(struct hfs_bnode *node) if (test_bit(HFS_BNODE_DELETED, &node->flags)) { hfs_bnode_unhash(node); spin_unlock(&tree->hash_lock); - hfs_bnode_clear(node, 0, - PAGE_CACHE_SIZE * tree->pages_per_bnode); + if (hfs_bnode_need_zeroout(tree)) + hfs_bnode_clear(node, 0, tree->node_size); hfs_bmap_free(node); hfs_bnode_free(node); return; @@ -658,3 +656,16 @@ void hfs_bnode_put(struct hfs_bnode *node) } } +/* + * Unused nodes have to be zeroed if this is the catalog tree and + * a corresponding flag in the volume header is set. + */ +bool hfs_bnode_need_zeroout(struct hfs_btree *tree) +{ + struct super_block *sb = tree->inode->i_sb; + struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); + const u32 volume_attr = be32_to_cpu(sbi->s_vhdr->attributes); + + return tree->cnid == HFSPLUS_CAT_CNID && + volume_attr & HFSPLUS_VOL_UNUSED_NODE_FIX; +} diff --git a/fs/hfsplus/btree.c b/fs/hfsplus/btree.c index 0fcec8b2a90b..3345c7553edc 100644 --- a/fs/hfsplus/btree.c +++ b/fs/hfsplus/btree.c @@ -358,7 +358,7 @@ struct hfs_bnode *hfs_bmap_alloc(struct hfs_btree *tree) u32 count; int res; - res = hfsplus_file_extend(inode); + res = hfsplus_file_extend(inode, hfs_bnode_need_zeroout(tree)); if (res) return ERR_PTR(res); hip->phys_size = inode->i_size = diff --git a/fs/hfsplus/dir.c b/fs/hfsplus/dir.c index bdec66522de3..610a3260bef1 100644 --- a/fs/hfsplus/dir.c +++ b/fs/hfsplus/dir.c @@ -12,6 +12,7 @@ #include <linux/fs.h> #include <linux/slab.h> #include <linux/random.h> +#include <linux/nls.h> #include "hfsplus_fs.h" #include "hfsplus_raw.h" @@ -127,7 +128,7 @@ static int hfsplus_readdir(struct file *file, struct dir_context *ctx) struct inode *inode = file_inode(file); struct super_block *sb = inode->i_sb; int len, err; - char strbuf[HFSPLUS_MAX_STRLEN + 1]; + char *strbuf; hfsplus_cat_entry entry; struct hfs_find_data fd; struct hfsplus_readdir_data *rd; @@ -139,6 +140,11 @@ static int hfsplus_readdir(struct file *file, struct dir_context *ctx) err = hfs_find_init(HFSPLUS_SB(sb)->cat_tree, &fd); if (err) return err; + strbuf = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_MAX_STRLEN + 1, GFP_KERNEL); + if (!strbuf) { + err = -ENOMEM; + goto out; + } hfsplus_cat_build_key(sb, fd.search_key, inode->i_ino, NULL); err = hfs_brec_find(&fd, hfs_find_rec_by_key); if (err) @@ -193,7 +199,7 @@ static int hfsplus_readdir(struct file *file, struct dir_context *ctx) hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, fd.entrylength); type = be16_to_cpu(entry.type); - len = HFSPLUS_MAX_STRLEN; + len = NLS_MAX_CHARSET_SIZE * HFSPLUS_MAX_STRLEN; err = hfsplus_uni2asc(sb, &fd.key->cat.name, strbuf, &len); if (err) goto out; @@ -212,13 +218,31 @@ static int hfsplus_readdir(struct file *file, struct dir_context *ctx) be32_to_cpu(entry.folder.id), DT_DIR)) break; } else if (type == HFSPLUS_FILE) { + u16 mode; + unsigned type = DT_UNKNOWN; + if (fd.entrylength < sizeof(struct hfsplus_cat_file)) { pr_err("small file entry\n"); err = -EIO; goto out; } + + mode = be16_to_cpu(entry.file.permissions.mode); + if (S_ISREG(mode)) + type = DT_REG; + else if (S_ISLNK(mode)) + type = DT_LNK; + else if (S_ISFIFO(mode)) + type = DT_FIFO; + else if (S_ISCHR(mode)) + type = DT_CHR; + else if (S_ISBLK(mode)) + type = DT_BLK; + else if (S_ISSOCK(mode)) + type = DT_SOCK; + if (!dir_emit(ctx, strbuf, len, - be32_to_cpu(entry.file.id), DT_REG)) + be32_to_cpu(entry.file.id), type)) break; } else { pr_err("bad catalog entry type\n"); @@ -246,6 +270,7 @@ next: } memcpy(&rd->key, fd.key, sizeof(struct hfsplus_cat_key)); out: + kfree(strbuf); hfs_find_exit(&fd); return err; } diff --git a/fs/hfsplus/extents.c b/fs/hfsplus/extents.c index a7aafb35b624..feca524ce2a5 100644 --- a/fs/hfsplus/extents.c +++ b/fs/hfsplus/extents.c @@ -235,7 +235,7 @@ int hfsplus_get_block(struct inode *inode, sector_t iblock, if (iblock > hip->fs_blocks || !create) return -EIO; if (ablock >= hip->alloc_blocks) { - res = hfsplus_file_extend(inode); + res = hfsplus_file_extend(inode, false); if (res) return res; } @@ -425,7 +425,7 @@ int hfsplus_free_fork(struct super_block *sb, u32 cnid, return res; } -int hfsplus_file_extend(struct inode *inode) +int hfsplus_file_extend(struct inode *inode, bool zeroout) { struct super_block *sb = inode->i_sb; struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb); @@ -436,10 +436,9 @@ int hfsplus_file_extend(struct inode *inode) if (sbi->alloc_file->i_size * 8 < sbi->total_blocks - sbi->free_blocks + 8) { /* extend alloc file */ - pr_err("extend alloc file! " - "(%llu,%u,%u)\n", - sbi->alloc_file->i_size * 8, - sbi->total_blocks, sbi->free_blocks); + pr_err("extend alloc file! (%llu,%u,%u)\n", + sbi->alloc_file->i_size * 8, + sbi->total_blocks, sbi->free_blocks); return -ENOSPC; } @@ -463,6 +462,12 @@ int hfsplus_file_extend(struct inode *inode) } } + if (zeroout) { + res = sb_issue_zeroout(sb, start, len, GFP_NOFS); + if (res) + goto out; + } + hfs_dbg(EXTENT, "extend %lu: %u,%u\n", inode->i_ino, start, len); if (hip->alloc_blocks <= hip->first_blocks) { diff --git a/fs/hfsplus/hfsplus_fs.h b/fs/hfsplus/hfsplus_fs.h index 83dc29286b10..eb5e059f481a 100644 --- a/fs/hfsplus/hfsplus_fs.h +++ b/fs/hfsplus/hfsplus_fs.h @@ -369,114 +369,119 @@ typedef int (*search_strategy_t)(struct hfs_bnode *, /* attributes.c */ int __init hfsplus_create_attr_tree_cache(void); void hfsplus_destroy_attr_tree_cache(void); +int hfsplus_attr_bin_cmp_key(const hfsplus_btree_key *k1, + const hfsplus_btree_key *k2); +int hfsplus_attr_build_key(struct super_block *sb, hfsplus_btree_key *key, + u32 cnid, const char *name); hfsplus_attr_entry *hfsplus_alloc_attr_entry(void); -void hfsplus_destroy_attr_entry(hfsplus_attr_entry *entry_p); -int hfsplus_attr_bin_cmp_key(const hfsplus_btree_key *, - const hfsplus_btree_key *); -int hfsplus_attr_build_key(struct super_block *, hfsplus_btree_key *, - u32, const char *); -void hfsplus_attr_build_key_uni(hfsplus_btree_key *key, - u32 cnid, - struct hfsplus_attr_unistr *name); -int hfsplus_find_attr(struct super_block *, u32, - const char *, struct hfs_find_data *); +void hfsplus_destroy_attr_entry(hfsplus_attr_entry *entry); +int hfsplus_find_attr(struct super_block *sb, u32 cnid, const char *name, + struct hfs_find_data *fd); int hfsplus_attr_exists(struct inode *inode, const char *name); -int hfsplus_create_attr(struct inode *, const char *, const void *, size_t); -int hfsplus_delete_attr(struct inode *, const char *); +int hfsplus_create_attr(struct inode *inode, const char *name, + const void *value, size_t size); +int hfsplus_delete_attr(struct inode *inode, const char *name); int hfsplus_delete_all_attrs(struct inode *dir, u32 cnid); /* bitmap.c */ -int hfsplus_block_allocate(struct super_block *, u32, u32, u32 *); -int hfsplus_block_free(struct super_block *, u32, u32); +int hfsplus_block_allocate(struct super_block *sb, u32 size, u32 offset, + u32 *max); +int hfsplus_block_free(struct super_block *sb, u32 offset, u32 count); /* btree.c */ -u32 hfsplus_calc_btree_clump_size(u32, u32, u64, int); -struct hfs_btree *hfs_btree_open(struct super_block *, u32); -void hfs_btree_close(struct hfs_btree *); -int hfs_btree_write(struct hfs_btree *); -struct hfs_bnode *hfs_bmap_alloc(struct hfs_btree *); -void hfs_bmap_free(struct hfs_bnode *); +u32 hfsplus_calc_btree_clump_size(u32 block_size, u32 node_size, u64 sectors, + int file_id); +struct hfs_btree *hfs_btree_open(struct super_block *sb, u32 id); +void hfs_btree_close(struct hfs_btree *tree); +int hfs_btree_write(struct hfs_btree *tree); +struct hfs_bnode *hfs_bmap_alloc(struct hfs_btree *tree); +void hfs_bmap_free(struct hfs_bnode *node); /* bnode.c */ -void hfs_bnode_read(struct hfs_bnode *, void *, int, int); -u16 hfs_bnode_read_u16(struct hfs_bnode *, int); -u8 hfs_bnode_read_u8(struct hfs_bnode *, int); -void hfs_bnode_read_key(struct hfs_bnode *, void *, int); -void hfs_bnode_write(struct hfs_bnode *, void *, int, int); -void hfs_bnode_write_u16(struct hfs_bnode *, int, u16); -void hfs_bnode_clear(struct hfs_bnode *, int, int); -void hfs_bnode_copy(struct hfs_bnode *, int, - struct hfs_bnode *, int, int); -void hfs_bnode_move(struct hfs_bnode *, int, int, int); -void hfs_bnode_dump(struct hfs_bnode *); -void hfs_bnode_unlink(struct hfs_bnode *); -struct hfs_bnode *hfs_bnode_findhash(struct hfs_btree *, u32); -struct hfs_bnode *hfs_bnode_find(struct hfs_btree *, u32); -void hfs_bnode_unhash(struct hfs_bnode *); -void hfs_bnode_free(struct hfs_bnode *); -struct hfs_bnode *hfs_bnode_create(struct hfs_btree *, u32); -void hfs_bnode_get(struct hfs_bnode *); -void hfs_bnode_put(struct hfs_bnode *); +void hfs_bnode_read(struct hfs_bnode *node, void *buf, int off, int len); +u16 hfs_bnode_read_u16(struct hfs_bnode *node, int off); +u8 hfs_bnode_read_u8(struct hfs_bnode *node, int off); +void hfs_bnode_read_key(struct hfs_bnode *node, void *key, int off); +void hfs_bnode_write(struct hfs_bnode *node, void *buf, int off, int len); +void hfs_bnode_write_u16(struct hfs_bnode *node, int off, u16 data); +void hfs_bnode_clear(struct hfs_bnode *node, int off, int len); +void hfs_bnode_copy(struct hfs_bnode *dst_node, int dst, + struct hfs_bnode *src_node, int src, int len); +void hfs_bnode_move(struct hfs_bnode *node, int dst, int src, int len); +void hfs_bnode_dump(struct hfs_bnode *node); +void hfs_bnode_unlink(struct hfs_bnode *node); +struct hfs_bnode *hfs_bnode_findhash(struct hfs_btree *tree, u32 cnid); +void hfs_bnode_unhash(struct hfs_bnode *node); +struct hfs_bnode *hfs_bnode_find(struct hfs_btree *tree, u32 num); +void hfs_bnode_free(struct hfs_bnode *node); +struct hfs_bnode *hfs_bnode_create(struct hfs_btree *tree, u32 num); +void hfs_bnode_get(struct hfs_bnode *node); +void hfs_bnode_put(struct hfs_bnode *node); +bool hfs_bnode_need_zeroout(struct hfs_btree *tree); /* brec.c */ -u16 hfs_brec_lenoff(struct hfs_bnode *, u16, u16 *); -u16 hfs_brec_keylen(struct hfs_bnode *, u16); -int hfs_brec_insert(struct hfs_find_data *, void *, int); -int hfs_brec_remove(struct hfs_find_data *); +u16 hfs_brec_lenoff(struct hfs_bnode *node, u16 rec, u16 *off); +u16 hfs_brec_keylen(struct hfs_bnode *node, u16 rec); +int hfs_brec_insert(struct hfs_find_data *fd, void *entry, int entry_len); +int hfs_brec_remove(struct hfs_find_data *fd); /* bfind.c */ -int hfs_find_init(struct hfs_btree *, struct hfs_find_data *); -void hfs_find_exit(struct hfs_find_data *); -int hfs_find_1st_rec_by_cnid(struct hfs_bnode *, - struct hfs_find_data *, - int *, int *, int *); -int hfs_find_rec_by_key(struct hfs_bnode *, - struct hfs_find_data *, - int *, int *, int *); -int __hfs_brec_find(struct hfs_bnode *, struct hfs_find_data *, - search_strategy_t); -int hfs_brec_find(struct hfs_find_data *, search_strategy_t); -int hfs_brec_read(struct hfs_find_data *, void *, int); -int hfs_brec_goto(struct hfs_find_data *, int); +int hfs_find_init(struct hfs_btree *tree, struct hfs_find_data *fd); +void hfs_find_exit(struct hfs_find_data *fd); +int hfs_find_1st_rec_by_cnid(struct hfs_bnode *bnode, struct hfs_find_data *fd, + int *begin, int *end, int *cur_rec); +int hfs_find_rec_by_key(struct hfs_bnode *bnode, struct hfs_find_data *fd, + int *begin, int *end, int *cur_rec); +int __hfs_brec_find(struct hfs_bnode *bnode, struct hfs_find_data *fd, + search_strategy_t rec_found); +int hfs_brec_find(struct hfs_find_data *fd, search_strategy_t do_key_compare); +int hfs_brec_read(struct hfs_find_data *fd, void *rec, int rec_len); +int hfs_brec_goto(struct hfs_find_data *fd, int cnt); /* catalog.c */ -int hfsplus_cat_case_cmp_key(const hfsplus_btree_key *, - const hfsplus_btree_key *); -int hfsplus_cat_bin_cmp_key(const hfsplus_btree_key *, - const hfsplus_btree_key *); -void hfsplus_cat_build_key(struct super_block *sb, - hfsplus_btree_key *, u32, struct qstr *); -int hfsplus_find_cat(struct super_block *, u32, struct hfs_find_data *); -int hfsplus_create_cat(u32, struct inode *, struct qstr *, struct inode *); -int hfsplus_delete_cat(u32, struct inode *, struct qstr *); -int hfsplus_rename_cat(u32, struct inode *, struct qstr *, - struct inode *, struct qstr *); +int hfsplus_cat_case_cmp_key(const hfsplus_btree_key *k1, + const hfsplus_btree_key *k2); +int hfsplus_cat_bin_cmp_key(const hfsplus_btree_key *k1, + const hfsplus_btree_key *k2); +void hfsplus_cat_build_key(struct super_block *sb, hfsplus_btree_key *key, + u32 parent, struct qstr *str); void hfsplus_cat_set_perms(struct inode *inode, struct hfsplus_perm *perms); +int hfsplus_find_cat(struct super_block *sb, u32 cnid, + struct hfs_find_data *fd); +int hfsplus_create_cat(u32 cnid, struct inode *dir, struct qstr *str, + struct inode *inode); +int hfsplus_delete_cat(u32 cnid, struct inode *dir, struct qstr *str); +int hfsplus_rename_cat(u32 cnid, struct inode *src_dir, struct qstr *src_name, + struct inode *dst_dir, struct qstr *dst_name); /* dir.c */ extern const struct inode_operations hfsplus_dir_inode_operations; extern const struct file_operations hfsplus_dir_operations; /* extents.c */ -int hfsplus_ext_cmp_key(const hfsplus_btree_key *, const hfsplus_btree_key *); -int hfsplus_ext_write_extent(struct inode *); -int hfsplus_get_block(struct inode *, sector_t, struct buffer_head *, int); -int hfsplus_free_fork(struct super_block *, u32, - struct hfsplus_fork_raw *, int); -int hfsplus_file_extend(struct inode *); -void hfsplus_file_truncate(struct inode *); +int hfsplus_ext_cmp_key(const hfsplus_btree_key *k1, + const hfsplus_btree_key *k2); +int hfsplus_ext_write_extent(struct inode *inode); +int hfsplus_get_block(struct inode *inode, sector_t iblock, + struct buffer_head *bh_result, int create); +int hfsplus_free_fork(struct super_block *sb, u32 cnid, + struct hfsplus_fork_raw *fork, int type); +int hfsplus_file_extend(struct inode *inode, bool zeroout); +void hfsplus_file_truncate(struct inode *inode); /* inode.c */ extern const struct address_space_operations hfsplus_aops; extern const struct address_space_operations hfsplus_btree_aops; extern const struct dentry_operations hfsplus_dentry_operations; -void hfsplus_inode_read_fork(struct inode *, struct hfsplus_fork_raw *); -void hfsplus_inode_write_fork(struct inode *, struct hfsplus_fork_raw *); -int hfsplus_cat_read_inode(struct inode *, struct hfs_find_data *); -int hfsplus_cat_write_inode(struct inode *); -struct inode *hfsplus_new_inode(struct super_block *, umode_t); -void hfsplus_delete_inode(struct inode *); +struct inode *hfsplus_new_inode(struct super_block *sb, umode_t mode); +void hfsplus_delete_inode(struct inode *inode); +void hfsplus_inode_read_fork(struct inode *inode, + struct hfsplus_fork_raw *fork); +void hfsplus_inode_write_fork(struct inode *inode, + struct hfsplus_fork_raw *fork); +int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd); +int hfsplus_cat_write_inode(struct inode *inode); int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end, int datasync); @@ -484,13 +489,17 @@ int hfsplus_file_fsync(struct file *file, loff_t start, loff_t end, long hfsplus_ioctl(struct file *filp, unsigned int cmd, unsigned long arg); /* options.c */ -int hfsplus_parse_options(char *, struct hfsplus_sb_info *); +void hfsplus_fill_defaults(struct hfsplus_sb_info *opts); int hfsplus_parse_options_remount(char *input, int *force); -void hfsplus_fill_defaults(struct hfsplus_sb_info *); -int hfsplus_show_options(struct seq_file *, struct dentry *); +int hfsplus_parse_options(char *input, struct hfsplus_sb_info *sbi); +int hfsplus_show_options(struct seq_file *seq, struct dentry *root); + +/* part_tbl.c */ +int hfs_part_find(struct super_block *sb, sector_t *part_start, + sector_t *part_size); /* super.c */ -struct inode *hfsplus_iget(struct super_block *, unsigned long); +struct inode *hfsplus_iget(struct super_block *sb, unsigned long ino); void hfsplus_mark_mdb_dirty(struct super_block *sb); /* tables.c */ @@ -499,23 +508,23 @@ extern u16 hfsplus_decompose_table[]; extern u16 hfsplus_compose_table[]; /* unicode.c */ -int hfsplus_strcasecmp(const struct hfsplus_unistr *, - const struct hfsplus_unistr *); -int hfsplus_strcmp(const struct hfsplus_unistr *, - const struct hfsplus_unistr *); -int hfsplus_uni2asc(struct super_block *, - const struct hfsplus_unistr *, char *, int *); -int hfsplus_asc2uni(struct super_block *, - struct hfsplus_unistr *, int, const char *, int); +int hfsplus_strcasecmp(const struct hfsplus_unistr *s1, + const struct hfsplus_unistr *s2); +int hfsplus_strcmp(const struct hfsplus_unistr *s1, + const struct hfsplus_unistr *s2); +int hfsplus_uni2asc(struct super_block *sb, const struct hfsplus_unistr *ustr, + char *astr, int *len_p); +int hfsplus_asc2uni(struct super_block *sb, struct hfsplus_unistr *ustr, + int max_unistr_len, const char *astr, int len); int hfsplus_hash_dentry(const struct dentry *dentry, struct qstr *str); -int hfsplus_compare_dentry(const struct dentry *parent, const struct dentry *dentry, - unsigned int len, const char *str, const struct qstr *name); +int hfsplus_compare_dentry(const struct dentry *parent, + const struct dentry *dentry, unsigned int len, + const char *str, const struct qstr *name); /* wrapper.c */ -int hfsplus_read_wrapper(struct super_block *); -int hfs_part_find(struct super_block *, sector_t *, sector_t *); -int hfsplus_submit_bio(struct super_block *sb, sector_t sector, - void *buf, void **data, int rw); +int hfsplus_submit_bio(struct super_block *sb, sector_t sector, void *buf, + void **data, int rw); +int hfsplus_read_wrapper(struct super_block *sb); /* time macros */ #define __hfsp_mt2ut(t) (be32_to_cpu(t) - 2082844800U) diff --git a/fs/hfsplus/hfsplus_raw.h b/fs/hfsplus/hfsplus_raw.h index 5a126828d85e..8298d0985f81 100644 --- a/fs/hfsplus/hfsplus_raw.h +++ b/fs/hfsplus/hfsplus_raw.h @@ -144,6 +144,7 @@ struct hfsplus_vh { #define HFSPLUS_VOL_NODEID_REUSED (1 << 12) #define HFSPLUS_VOL_JOURNALED (1 << 13) #define HFSPLUS_VOL_SOFTLOCK (1 << 15) +#define HFSPLUS_VOL_UNUSED_NODE_FIX (1 << 31) /* HFS+ BTree node descriptor */ struct hfs_bnode_desc { diff --git a/fs/hfsplus/options.c b/fs/hfsplus/options.c index 68537e8b7a09..c90b72ee676d 100644 --- a/fs/hfsplus/options.c +++ b/fs/hfsplus/options.c @@ -173,9 +173,8 @@ int hfsplus_parse_options(char *input, struct hfsplus_sb_info *sbi) if (p) sbi->nls = load_nls(p); if (!sbi->nls) { - pr_err("unable to load " - "nls mapping \"%s\"\n", - p); + pr_err("unable to load nls mapping \"%s\"\n", + p); kfree(p); return 0; } @@ -232,8 +231,8 @@ int hfsplus_show_options(struct seq_file *seq, struct dentry *root) if (sbi->nls) seq_printf(seq, ",nls=%s", sbi->nls->charset); if (test_bit(HFSPLUS_SB_NODECOMPOSE, &sbi->flags)) - seq_printf(seq, ",nodecompose"); + seq_puts(seq, ",nodecompose"); if (test_bit(HFSPLUS_SB_NOBARRIER, &sbi->flags)) - seq_printf(seq, ",nobarrier"); + seq_puts(seq, ",nobarrier"); return 0; } diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c index a513d2d36be9..4cf2024b87da 100644 --- a/fs/hfsplus/super.c +++ b/fs/hfsplus/super.c @@ -131,9 +131,10 @@ static int hfsplus_system_write_inode(struct inode *inode) hfsplus_inode_write_fork(inode, fork); if (tree) { int err = hfs_btree_write(tree); + if (err) { pr_err("b-tree write err: %d, ino %lu\n", - err, inode->i_ino); + err, inode->i_ino); return err; } } diff --git a/fs/hfsplus/wrapper.c b/fs/hfsplus/wrapper.c index 3f999649587f..cc6235671437 100644 --- a/fs/hfsplus/wrapper.c +++ b/fs/hfsplus/wrapper.c @@ -24,8 +24,8 @@ struct hfsplus_wd { u16 embed_count; }; -/* - * hfsplus_submit_bio - Perfrom block I/O +/** + * hfsplus_submit_bio - Perform block I/O * @sb: super block of volume for I/O * @sector: block to read or write, for blocks of HFSPLUS_SECTOR_SIZE bytes * @buf: buffer for I/O @@ -231,10 +231,8 @@ reread: if (blocksize < HFSPLUS_SECTOR_SIZE || ((blocksize - 1) & blocksize)) goto out_free_backup_vhdr; sbi->alloc_blksz = blocksize; - sbi->alloc_blksz_shift = 0; - while ((blocksize >>= 1) != 0) - sbi->alloc_blksz_shift++; - blocksize = min(sbi->alloc_blksz, (u32)PAGE_SIZE); + sbi->alloc_blksz_shift = ilog2(blocksize); + blocksize = min_t(u32, sbi->alloc_blksz, PAGE_SIZE); /* * Align block size to block offset. diff --git a/fs/hfsplus/xattr.c b/fs/hfsplus/xattr.c index 4e27edc082a4..d98094a9f476 100644 --- a/fs/hfsplus/xattr.c +++ b/fs/hfsplus/xattr.c @@ -8,6 +8,7 @@ #include "hfsplus_fs.h" #include <linux/posix_acl_xattr.h> +#include <linux/nls.h> #include "xattr.h" #include "acl.h" @@ -66,10 +67,10 @@ static void hfsplus_init_header_node(struct inode *attr_file, char *bmp; u32 used_nodes; u32 used_bmp_bytes; - loff_t tmp; + u64 tmp; hfs_dbg(ATTR_MOD, "init_hdr_attr_file: clump %u, node_size %u\n", - clump_size, node_size); + clump_size, node_size); /* The end of the node contains list of record offsets */ rec_offsets = (__be16 *)(buf + node_size); @@ -195,7 +196,7 @@ check_attr_tree_state_again: } while (hip->alloc_blocks < hip->clump_blocks) { - err = hfsplus_file_extend(attr_file); + err = hfsplus_file_extend(attr_file, false); if (unlikely(err)) { pr_err("failed to extend attributes file\n"); goto end_attr_file_creation; @@ -645,8 +646,7 @@ ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size) struct hfs_find_data fd; u16 key_len = 0; struct hfsplus_attr_key attr_key; - char strbuf[HFSPLUS_ATTR_MAX_STRLEN + - XATTR_MAC_OSX_PREFIX_LEN + 1] = {0}; + char *strbuf; int xattr_name_len; if ((!S_ISREG(inode->i_mode) && @@ -666,6 +666,13 @@ ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size) return err; } + strbuf = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + + XATTR_MAC_OSX_PREFIX_LEN + 1, GFP_KERNEL); + if (!strbuf) { + res = -ENOMEM; + goto out; + } + err = hfsplus_find_attr(inode->i_sb, inode->i_ino, NULL, &fd); if (err) { if (err == -ENOENT) { @@ -692,7 +699,7 @@ ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size) if (be32_to_cpu(attr_key.cnid) != inode->i_ino) goto end_listxattr; - xattr_name_len = HFSPLUS_ATTR_MAX_STRLEN; + xattr_name_len = NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN; if (hfsplus_uni2asc(inode->i_sb, (const struct hfsplus_unistr *)&fd.key->attr.key_name, strbuf, &xattr_name_len)) { @@ -718,6 +725,8 @@ ssize_t hfsplus_listxattr(struct dentry *dentry, char *buffer, size_t size) } end_listxattr: + kfree(strbuf); +out: hfs_find_exit(&fd); return res; } @@ -797,47 +806,55 @@ end_removexattr: static int hfsplus_osx_getxattr(struct dentry *dentry, const char *name, void *buffer, size_t size, int type) { - char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + - XATTR_MAC_OSX_PREFIX_LEN + 1] = {0}; - size_t len = strlen(name); + char *xattr_name; + int res; if (!strcmp(name, "")) return -EINVAL; - if (len > HFSPLUS_ATTR_MAX_STRLEN) - return -EOPNOTSUPP; - /* * Don't allow retrieving properly prefixed attributes * by prepending them with "osx." */ if (is_known_namespace(name)) return -EOPNOTSUPP; + xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + + XATTR_MAC_OSX_PREFIX_LEN + 1, GFP_KERNEL); + if (!xattr_name) + return -ENOMEM; + strcpy(xattr_name, XATTR_MAC_OSX_PREFIX); + strcpy(xattr_name + XATTR_MAC_OSX_PREFIX_LEN, name); - return hfsplus_getxattr(dentry, xattr_name, buffer, size); + res = hfsplus_getxattr(dentry, xattr_name, buffer, size); + kfree(xattr_name); + return res; } static int hfsplus_osx_setxattr(struct dentry *dentry, const char *name, const void *buffer, size_t size, int flags, int type) { - char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + - XATTR_MAC_OSX_PREFIX_LEN + 1] = {0}; - size_t len = strlen(name); + char *xattr_name; + int res; if (!strcmp(name, "")) return -EINVAL; - if (len > HFSPLUS_ATTR_MAX_STRLEN) - return -EOPNOTSUPP; - /* * Don't allow setting properly prefixed attributes * by prepending them with "osx." */ if (is_known_namespace(name)) return -EOPNOTSUPP; + xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + + XATTR_MAC_OSX_PREFIX_LEN + 1, GFP_KERNEL); + if (!xattr_name) + return -ENOMEM; + strcpy(xattr_name, XATTR_MAC_OSX_PREFIX); + strcpy(xattr_name + XATTR_MAC_OSX_PREFIX_LEN, name); - return hfsplus_setxattr(dentry, xattr_name, buffer, size, flags); + res = hfsplus_setxattr(dentry, xattr_name, buffer, size, flags); + kfree(xattr_name); + return res; } static size_t hfsplus_osx_listxattr(struct dentry *dentry, char *list, diff --git a/fs/hfsplus/xattr_security.c b/fs/hfsplus/xattr_security.c index 00722765ea79..6ec5e107691f 100644 --- a/fs/hfsplus/xattr_security.c +++ b/fs/hfsplus/xattr_security.c @@ -7,6 +7,8 @@ */ #include <linux/security.h> +#include <linux/nls.h> + #include "hfsplus_fs.h" #include "xattr.h" #include "acl.h" @@ -14,37 +16,43 @@ static int hfsplus_security_getxattr(struct dentry *dentry, const char *name, void *buffer, size_t size, int type) { - char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0}; - size_t len = strlen(name); + char *xattr_name; + int res; if (!strcmp(name, "")) return -EINVAL; - if (len + XATTR_SECURITY_PREFIX_LEN > HFSPLUS_ATTR_MAX_STRLEN) - return -EOPNOTSUPP; - + xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1, + GFP_KERNEL); + if (!xattr_name) + return -ENOMEM; strcpy(xattr_name, XATTR_SECURITY_PREFIX); strcpy(xattr_name + XATTR_SECURITY_PREFIX_LEN, name); - return hfsplus_getxattr(dentry, xattr_name, buffer, size); + res = hfsplus_getxattr(dentry, xattr_name, buffer, size); + kfree(xattr_name); + return res; } static int hfsplus_security_setxattr(struct dentry *dentry, const char *name, const void *buffer, size_t size, int flags, int type) { - char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0}; - size_t len = strlen(name); + char *xattr_name; + int res; if (!strcmp(name, "")) return -EINVAL; - if (len + XATTR_SECURITY_PREFIX_LEN > HFSPLUS_ATTR_MAX_STRLEN) - return -EOPNOTSUPP; - + xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1, + GFP_KERNEL); + if (!xattr_name) + return -ENOMEM; strcpy(xattr_name, XATTR_SECURITY_PREFIX); strcpy(xattr_name + XATTR_SECURITY_PREFIX_LEN, name); - return hfsplus_setxattr(dentry, xattr_name, buffer, size, flags); + res = hfsplus_setxattr(dentry, xattr_name, buffer, size, flags); + kfree(xattr_name); + return res; } static size_t hfsplus_security_listxattr(struct dentry *dentry, char *list, @@ -62,31 +70,30 @@ static int hfsplus_initxattrs(struct inode *inode, void *fs_info) { const struct xattr *xattr; - char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0}; - size_t xattr_name_len; + char *xattr_name; int err = 0; + xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1, + GFP_KERNEL); + if (!xattr_name) + return -ENOMEM; for (xattr = xattr_array; xattr->name != NULL; xattr++) { - xattr_name_len = strlen(xattr->name); - if (xattr_name_len == 0) + if (!strcmp(xattr->name, "")) continue; - if (xattr_name_len + XATTR_SECURITY_PREFIX_LEN > - HFSPLUS_ATTR_MAX_STRLEN) - return -EOPNOTSUPP; - strcpy(xattr_name, XATTR_SECURITY_PREFIX); strcpy(xattr_name + XATTR_SECURITY_PREFIX_LEN, xattr->name); memset(xattr_name + - XATTR_SECURITY_PREFIX_LEN + xattr_name_len, 0, 1); + XATTR_SECURITY_PREFIX_LEN + strlen(xattr->name), 0, 1); err = __hfsplus_setxattr(inode, xattr_name, xattr->value, xattr->value_len, 0); if (err) break; } + kfree(xattr_name); return err; } diff --git a/fs/hfsplus/xattr_trusted.c b/fs/hfsplus/xattr_trusted.c index 426cee277542..3c5f27e4746a 100644 --- a/fs/hfsplus/xattr_trusted.c +++ b/fs/hfsplus/xattr_trusted.c @@ -6,43 +6,51 @@ * Handler for trusted extended attributes. */ +#include <linux/nls.h> + #include "hfsplus_fs.h" #include "xattr.h" static int hfsplus_trusted_getxattr(struct dentry *dentry, const char *name, void *buffer, size_t size, int type) { - char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0}; - size_t len = strlen(name); + char *xattr_name; + int res; if (!strcmp(name, "")) return -EINVAL; - if (len + XATTR_TRUSTED_PREFIX_LEN > HFSPLUS_ATTR_MAX_STRLEN) - return -EOPNOTSUPP; - + xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1, + GFP_KERNEL); + if (!xattr_name) + return -ENOMEM; strcpy(xattr_name, XATTR_TRUSTED_PREFIX); strcpy(xattr_name + XATTR_TRUSTED_PREFIX_LEN, name); - return hfsplus_getxattr(dentry, xattr_name, buffer, size); + res = hfsplus_getxattr(dentry, xattr_name, buffer, size); + kfree(xattr_name); + return res; } static int hfsplus_trusted_setxattr(struct dentry *dentry, const char *name, const void *buffer, size_t size, int flags, int type) { - char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0}; - size_t len = strlen(name); + char *xattr_name; + int res; if (!strcmp(name, "")) return -EINVAL; - if (len + XATTR_TRUSTED_PREFIX_LEN > HFSPLUS_ATTR_MAX_STRLEN) - return -EOPNOTSUPP; - + xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1, + GFP_KERNEL); + if (!xattr_name) + return -ENOMEM; strcpy(xattr_name, XATTR_TRUSTED_PREFIX); strcpy(xattr_name + XATTR_TRUSTED_PREFIX_LEN, name); - return hfsplus_setxattr(dentry, xattr_name, buffer, size, flags); + res = hfsplus_setxattr(dentry, xattr_name, buffer, size, flags); + kfree(xattr_name); + return res; } static size_t hfsplus_trusted_listxattr(struct dentry *dentry, char *list, diff --git a/fs/hfsplus/xattr_user.c b/fs/hfsplus/xattr_user.c index e34016561ae0..2b625a538b64 100644 --- a/fs/hfsplus/xattr_user.c +++ b/fs/hfsplus/xattr_user.c @@ -6,43 +6,51 @@ * Handler for user extended attributes. */ +#include <linux/nls.h> + #include "hfsplus_fs.h" #include "xattr.h" static int hfsplus_user_getxattr(struct dentry *dentry, const char *name, void *buffer, size_t size, int type) { - char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0}; - size_t len = strlen(name); + char *xattr_name; + int res; if (!strcmp(name, "")) return -EINVAL; - if (len + XATTR_USER_PREFIX_LEN > HFSPLUS_ATTR_MAX_STRLEN) - return -EOPNOTSUPP; - + xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1, + GFP_KERNEL); + if (!xattr_name) + return -ENOMEM; strcpy(xattr_name, XATTR_USER_PREFIX); strcpy(xattr_name + XATTR_USER_PREFIX_LEN, name); - return hfsplus_getxattr(dentry, xattr_name, buffer, size); + res = hfsplus_getxattr(dentry, xattr_name, buffer, size); + kfree(xattr_name); + return res; } static int hfsplus_user_setxattr(struct dentry *dentry, const char *name, const void *buffer, size_t size, int flags, int type) { - char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0}; - size_t len = strlen(name); + char *xattr_name; + int res; if (!strcmp(name, "")) return -EINVAL; - if (len + XATTR_USER_PREFIX_LEN > HFSPLUS_ATTR_MAX_STRLEN) - return -EOPNOTSUPP; - + xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1, + GFP_KERNEL); + if (!xattr_name) + return -ENOMEM; strcpy(xattr_name, XATTR_USER_PREFIX); strcpy(xattr_name + XATTR_USER_PREFIX_LEN, name); - return hfsplus_setxattr(dentry, xattr_name, buffer, size, flags); + res = hfsplus_setxattr(dentry, xattr_name, buffer, size, flags); + kfree(xattr_name); + return res; } static size_t hfsplus_user_listxattr(struct dentry *dentry, char *list, diff --git a/fs/hpfs/alloc.c b/fs/hpfs/alloc.c index 58b5106186d0..f005046e1591 100644 --- a/fs/hpfs/alloc.c +++ b/fs/hpfs/alloc.c @@ -316,7 +316,7 @@ void hpfs_free_sectors(struct super_block *s, secno sec, unsigned n) struct quad_buffer_head qbh; __le32 *bmp; struct hpfs_sb_info *sbi = hpfs_sb(s); - /*printk("2 - ");*/ + /*pr_info("2 - ");*/ if (!n) return; if (sec < 0x12) { hpfs_error(s, "Trying to free reserved sector %08x", sec); diff --git a/fs/hpfs/buffer.c b/fs/hpfs/buffer.c index 139ef1684d07..8057fe4e6574 100644 --- a/fs/hpfs/buffer.c +++ b/fs/hpfs/buffer.c @@ -55,7 +55,7 @@ void *hpfs_map_sector(struct super_block *s, unsigned secno, struct buffer_head if (bh != NULL) return bh->b_data; else { - printk("HPFS: hpfs_map_sector: read error\n"); + pr_err("%s(): read error\n", __func__); return NULL; } } @@ -76,7 +76,7 @@ void *hpfs_get_sector(struct super_block *s, unsigned secno, struct buffer_head set_buffer_uptodate(bh); return bh->b_data; } else { - printk("HPFS: hpfs_get_sector: getblk failed\n"); + pr_err("%s(): getblk failed\n", __func__); return NULL; } } @@ -93,7 +93,7 @@ void *hpfs_map_4sectors(struct super_block *s, unsigned secno, struct quad_buffe cond_resched(); if (secno & 3) { - printk("HPFS: hpfs_map_4sectors: unaligned read\n"); + pr_err("%s(): unaligned read\n", __func__); return NULL; } @@ -112,7 +112,7 @@ void *hpfs_map_4sectors(struct super_block *s, unsigned secno, struct quad_buffe qbh->data = data = kmalloc(2048, GFP_NOFS); if (!data) { - printk("HPFS: hpfs_map_4sectors: out of memory\n"); + pr_err("%s(): out of memory\n", __func__); goto bail4; } @@ -145,7 +145,7 @@ void *hpfs_get_4sectors(struct super_block *s, unsigned secno, hpfs_lock_assert(s); if (secno & 3) { - printk("HPFS: hpfs_get_4sectors: unaligned read\n"); + pr_err("%s(): unaligned read\n", __func__); return NULL; } @@ -161,7 +161,7 @@ void *hpfs_get_4sectors(struct super_block *s, unsigned secno, } if (!(qbh->data = kmalloc(2048, GFP_NOFS))) { - printk("HPFS: hpfs_get_4sectors: out of memory\n"); + pr_err("%s(): out of memory\n", __func__); goto bail4; } return qbh->data; diff --git a/fs/hpfs/dir.c b/fs/hpfs/dir.c index 292b1acb9b81..2a8e07425de0 100644 --- a/fs/hpfs/dir.c +++ b/fs/hpfs/dir.c @@ -36,7 +36,7 @@ static loff_t hpfs_dir_lseek(struct file *filp, loff_t off, int whence) mutex_lock(&i->i_mutex); hpfs_lock(s); - /*printk("dir lseek\n");*/ + /*pr_info("dir lseek\n");*/ if (new_off == 0 || new_off == 1 || new_off == 11 || new_off == 12 || new_off == 13) goto ok; pos = ((loff_t) hpfs_de_as_down_as_possible(s, hpfs_inode->i_dno) << 4) + 1; while (pos != new_off) { @@ -51,7 +51,7 @@ ok: mutex_unlock(&i->i_mutex); return new_off; fail: - /*printk("illegal lseek: %016llx\n", new_off);*/ + /*pr_warn("illegal lseek: %016llx\n", new_off);*/ hpfs_unlock(s); mutex_unlock(&i->i_mutex); return -ESPIPE; @@ -127,7 +127,7 @@ static int hpfs_readdir(struct file *file, struct dir_context *ctx) if (ctx->pos == 12) goto out; if (ctx->pos == 3 || ctx->pos == 4 || ctx->pos == 5) { - printk("HPFS: warning: pos==%d\n",(int)ctx->pos); + pr_err("pos==%d\n", (int)ctx->pos); goto out; } if (ctx->pos == 0) { diff --git a/fs/hpfs/dnode.c b/fs/hpfs/dnode.c index 4364b2a02c5d..f36fc010fccb 100644 --- a/fs/hpfs/dnode.c +++ b/fs/hpfs/dnode.c @@ -17,7 +17,7 @@ static loff_t get_pos(struct dnode *d, struct hpfs_dirent *fde) if (de == fde) return ((loff_t) le32_to_cpu(d->self) << 4) | (loff_t)i; i++; } - printk("HPFS: get_pos: not_found\n"); + pr_info("%s(): not_found\n", __func__); return ((loff_t)le32_to_cpu(d->self) << 4) | (loff_t)1; } @@ -32,7 +32,7 @@ void hpfs_add_pos(struct inode *inode, loff_t *pos) if (hpfs_inode->i_rddir_off[i] == pos) return; if (!(i&0x0f)) { if (!(ppos = kmalloc((i+0x11) * sizeof(loff_t*), GFP_NOFS))) { - printk("HPFS: out of memory for position list\n"); + pr_err("out of memory for position list\n"); return; } if (hpfs_inode->i_rddir_off) { @@ -63,7 +63,8 @@ void hpfs_del_pos(struct inode *inode, loff_t *pos) } return; not_f: - /*printk("HPFS: warning: position pointer %p->%08x not found\n", pos, (int)*pos);*/ + /*pr_warn("position pointer %p->%08x not found\n", + pos, (int)*pos);*/ return; } @@ -92,8 +93,11 @@ static void hpfs_pos_ins(loff_t *p, loff_t d, loff_t c) { if ((*p & ~0x3f) == (d & ~0x3f) && (*p & 0x3f) >= (d & 0x3f)) { int n = (*p & 0x3f) + c; - if (n > 0x3f) printk("HPFS: hpfs_pos_ins: %08x + %d\n", (int)*p, (int)c >> 8); - else *p = (*p & ~0x3f) | n; + if (n > 0x3f) + pr_err("%s(): %08x + %d\n", + __func__, (int)*p, (int)c >> 8); + else + *p = (*p & ~0x3f) | n; } } @@ -101,8 +105,11 @@ static void hpfs_pos_del(loff_t *p, loff_t d, loff_t c) { if ((*p & ~0x3f) == (d & ~0x3f) && (*p & 0x3f) >= (d & 0x3f)) { int n = (*p & 0x3f) - c; - if (n < 1) printk("HPFS: hpfs_pos_ins: %08x - %d\n", (int)*p, (int)c >> 8); - else *p = (*p & ~0x3f) | n; + if (n < 1) + pr_err("%s(): %08x - %d\n", + __func__, (int)*p, (int)c >> 8); + else + *p = (*p & ~0x3f) | n; } } @@ -239,12 +246,12 @@ static int hpfs_add_to_dnode(struct inode *i, dnode_secno dno, struct fnode *fnode; int c1, c2 = 0; if (!(nname = kmalloc(256, GFP_NOFS))) { - printk("HPFS: out of memory, can't add to dnode\n"); + pr_err("out of memory, can't add to dnode\n"); return 1; } go_up: if (namelen >= 256) { - hpfs_error(i->i_sb, "hpfs_add_to_dnode: namelen == %d", namelen); + hpfs_error(i->i_sb, "%s(): namelen == %d", __func__, namelen); kfree(nd); kfree(nname); return 1; @@ -281,7 +288,7 @@ static int hpfs_add_to_dnode(struct inode *i, dnode_secno dno, not be any error while splitting dnodes, otherwise the whole directory, not only file we're adding, would be lost. */ - printk("HPFS: out of memory for dnode splitting\n"); + pr_err("out of memory for dnode splitting\n"); hpfs_brelse4(&qbh); kfree(nname); return 1; @@ -597,7 +604,7 @@ static void delete_empty_dnode(struct inode *i, dnode_secno dno) if (!de_next->down) goto endm; ndown = de_down_pointer(de_next); if (!(de_cp = kmalloc(le16_to_cpu(de->length), GFP_NOFS))) { - printk("HPFS: out of memory for dtree balancing\n"); + pr_err("out of memory for dtree balancing\n"); goto endm; } memcpy(de_cp, de, le16_to_cpu(de->length)); @@ -612,7 +619,8 @@ static void delete_empty_dnode(struct inode *i, dnode_secno dno) hpfs_brelse4(&qbh1); } hpfs_add_to_dnode(i, ndown, de_cp->name, de_cp->namelen, de_cp, de_cp->down ? de_down_pointer(de_cp) : 0); - /*printk("UP-TO-DNODE: %08x (ndown = %08x, down = %08x, dno = %08x)\n", up, ndown, down, dno);*/ + /*pr_info("UP-TO-DNODE: %08x (ndown = %08x, down = %08x, dno = %08x)\n", + up, ndown, down, dno);*/ dno = up; kfree(de_cp); goto try_it_again; @@ -637,15 +645,15 @@ static void delete_empty_dnode(struct inode *i, dnode_secno dno) if (!dlp && down) { if (le32_to_cpu(d1->first_free) > 2044) { if (hpfs_sb(i->i_sb)->sb_chk >= 2) { - printk("HPFS: warning: unbalanced dnode tree, see hpfs.txt 4 more info\n"); - printk("HPFS: warning: terminating balancing operation\n"); + pr_err("unbalanced dnode tree, see hpfs.txt 4 more info\n"); + pr_err("terminating balancing operation\n"); } hpfs_brelse4(&qbh1); goto endm; } if (hpfs_sb(i->i_sb)->sb_chk >= 2) { - printk("HPFS: warning: unbalanced dnode tree, see hpfs.txt 4 more info\n"); - printk("HPFS: warning: goin'on\n"); + pr_err("unbalanced dnode tree, see hpfs.txt 4 more info\n"); + pr_err("goin'on\n"); } le16_add_cpu(&del->length, 4); del->down = 1; @@ -659,7 +667,7 @@ static void delete_empty_dnode(struct inode *i, dnode_secno dno) *(__le32 *) ((void *) del + le16_to_cpu(del->length) - 4) = cpu_to_le32(down); } else goto endm; if (!(de_cp = kmalloc(le16_to_cpu(de_prev->length), GFP_NOFS))) { - printk("HPFS: out of memory for dtree balancing\n"); + pr_err("out of memory for dtree balancing\n"); hpfs_brelse4(&qbh1); goto endm; } @@ -1000,7 +1008,7 @@ struct hpfs_dirent *map_fnode_dirent(struct super_block *s, fnode_secno fno, int d1, d2 = 0; name1 = f->name; if (!(name2 = kmalloc(256, GFP_NOFS))) { - printk("HPFS: out of memory, can't map dirent\n"); + pr_err("out of memory, can't map dirent\n"); return NULL; } if (f->len <= 15) diff --git a/fs/hpfs/ea.c b/fs/hpfs/ea.c index bcaafcd2666a..ce3f98ba993a 100644 --- a/fs/hpfs/ea.c +++ b/fs/hpfs/ea.c @@ -51,7 +51,7 @@ static char *get_indirect_ea(struct super_block *s, int ano, secno a, int size) { char *ret; if (!(ret = kmalloc(size + 1, GFP_NOFS))) { - printk("HPFS: out of memory for EA\n"); + pr_err("out of memory for EA\n"); return NULL; } if (hpfs_ea_read(s, a, ano, 0, size, ret)) { @@ -139,7 +139,7 @@ char *hpfs_get_ea(struct super_block *s, struct fnode *fnode, char *key, int *si if (ea_indirect(ea)) return get_indirect_ea(s, ea_in_anode(ea), ea_sec(ea), *size = ea_len(ea)); if (!(ret = kmalloc((*size = ea_valuelen(ea)) + 1, GFP_NOFS))) { - printk("HPFS: out of memory for EA\n"); + pr_err("out of memory for EA\n"); return NULL; } memcpy(ret, ea_data(ea), ea_valuelen(ea)); @@ -165,7 +165,7 @@ char *hpfs_get_ea(struct super_block *s, struct fnode *fnode, char *key, int *si if (ea_indirect(ea)) return get_indirect_ea(s, ea_in_anode(ea), ea_sec(ea), *size = ea_len(ea)); if (!(ret = kmalloc((*size = ea_valuelen(ea)) + 1, GFP_NOFS))) { - printk("HPFS: out of memory for EA\n"); + pr_err("out of memory for EA\n"); return NULL; } if (hpfs_ea_read(s, a, ano, pos + 4 + ea->namelen + 1, ea_valuelen(ea), ret)) { diff --git a/fs/hpfs/hpfs_fn.h b/fs/hpfs/hpfs_fn.h index 3ba49c080e42..b63b75fa00e7 100644 --- a/fs/hpfs/hpfs_fn.h +++ b/fs/hpfs/hpfs_fn.h @@ -8,6 +8,11 @@ //#define DBG //#define DEBUG_LOCKS +#ifdef pr_fmt +#undef pr_fmt +#endif + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/mutex.h> #include <linux/pagemap.h> diff --git a/fs/hpfs/inode.c b/fs/hpfs/inode.c index 50a427313835..7ce4b74234a1 100644 --- a/fs/hpfs/inode.c +++ b/fs/hpfs/inode.c @@ -183,7 +183,8 @@ void hpfs_write_inode(struct inode *i) struct inode *parent; if (i->i_ino == hpfs_sb(i->i_sb)->sb_root) return; if (hpfs_inode->i_rddir_off && !atomic_read(&i->i_count)) { - if (*hpfs_inode->i_rddir_off) printk("HPFS: write_inode: some position still there\n"); + if (*hpfs_inode->i_rddir_off) + pr_err("write_inode: some position still there\n"); kfree(hpfs_inode->i_rddir_off); hpfs_inode->i_rddir_off = NULL; } diff --git a/fs/hpfs/map.c b/fs/hpfs/map.c index 3aa66ae1031e..442770edcdc7 100644 --- a/fs/hpfs/map.c +++ b/fs/hpfs/map.c @@ -65,12 +65,13 @@ unsigned char *hpfs_load_code_page(struct super_block *s, secno cps) struct code_page_directory *cp = hpfs_map_sector(s, cps, &bh, 0); if (!cp) return NULL; if (le32_to_cpu(cp->magic) != CP_DIR_MAGIC) { - printk("HPFS: Code page directory magic doesn't match (magic = %08x)\n", le32_to_cpu(cp->magic)); + pr_err("Code page directory magic doesn't match (magic = %08x)\n", + le32_to_cpu(cp->magic)); brelse(bh); return NULL; } if (!le32_to_cpu(cp->n_code_pages)) { - printk("HPFS: n_code_pages == 0\n"); + pr_err("n_code_pages == 0\n"); brelse(bh); return NULL; } @@ -79,19 +80,19 @@ unsigned char *hpfs_load_code_page(struct super_block *s, secno cps) brelse(bh); if (cpi >= 3) { - printk("HPFS: Code page index out of array\n"); + pr_err("Code page index out of array\n"); return NULL; } if (!(cpd = hpfs_map_sector(s, cpds, &bh, 0))) return NULL; if (le16_to_cpu(cpd->offs[cpi]) > 0x178) { - printk("HPFS: Code page index out of sector\n"); + pr_err("Code page index out of sector\n"); brelse(bh); return NULL; } ptr = (unsigned char *)cpd + le16_to_cpu(cpd->offs[cpi]) + 6; if (!(cp_table = kmalloc(256, GFP_KERNEL))) { - printk("HPFS: out of memory for code page table\n"); + pr_err("out of memory for code page table\n"); brelse(bh); return NULL; } @@ -114,7 +115,7 @@ __le32 *hpfs_load_bitmap_directory(struct super_block *s, secno bmp) int i; __le32 *b; if (!(b = kmalloc(n * 512, GFP_KERNEL))) { - printk("HPFS: can't allocate memory for bitmap directory\n"); + pr_err("can't allocate memory for bitmap directory\n"); return NULL; } for (i=0;i<n;i++) { @@ -281,7 +282,9 @@ struct dnode *hpfs_map_dnode(struct super_block *s, unsigned secno, hpfs_error(s, "dnode %08x does not end with \\377 entry", secno); goto bail; } - if (b == 3) printk("HPFS: warning: unbalanced dnode tree, dnode %08x; see hpfs.txt 4 more info\n", secno); + if (b == 3) + pr_err("unbalanced dnode tree, dnode %08x; see hpfs.txt 4 more info\n", + secno); } return dnode; bail: diff --git a/fs/hpfs/name.c b/fs/hpfs/name.c index 9acdf338def0..b00d396d22c6 100644 --- a/fs/hpfs/name.c +++ b/fs/hpfs/name.c @@ -56,14 +56,15 @@ unsigned char *hpfs_translate_name(struct super_block *s, unsigned char *from, unsigned char *to; int i; if (hpfs_sb(s)->sb_chk >= 2) if (hpfs_is_name_long(from, len) != lng) { - printk("HPFS: Long name flag mismatch - name "); - for (i=0; i<len; i++) printk("%c", from[i]); - printk(" misidentified as %s.\n", lng ? "short" : "long"); - printk("HPFS: It's nothing serious. It could happen because of bug in OS/2.\nHPFS: Set checks=normal to disable this message.\n"); + pr_err("Long name flag mismatch - name "); + for (i = 0; i < len; i++) + pr_cont("%c", from[i]); + pr_cont(" misidentified as %s.\n", lng ? "short" : "long"); + pr_err("It's nothing serious. It could happen because of bug in OS/2.\nSet checks=normal to disable this message.\n"); } if (!lc) return from; if (!(to = kmalloc(len, GFP_KERNEL))) { - printk("HPFS: can't allocate memory for name conversion buffer\n"); + pr_err("can't allocate memory for name conversion buffer\n"); return from; } for (i = 0; i < len; i++) to[i] = locase(hpfs_sb(s)->sb_cp_table,from[i]); diff --git a/fs/hpfs/namei.c b/fs/hpfs/namei.c index 1b39afdd86fd..bdbc2c3080a4 100644 --- a/fs/hpfs/namei.c +++ b/fs/hpfs/namei.c @@ -404,7 +404,7 @@ again: d_rehash(dentry); } else { struct iattr newattrs; - /*printk("HPFS: truncating file before delete.\n");*/ + /*pr_info("truncating file before delete.\n");*/ newattrs.ia_size = 0; newattrs.ia_valid = ATTR_SIZE | ATTR_CTIME; err = notify_change(dentry, &newattrs, NULL); diff --git a/fs/hpfs/super.c b/fs/hpfs/super.c index fe3463a43236..7cd00d3a7c9b 100644 --- a/fs/hpfs/super.c +++ b/fs/hpfs/super.c @@ -62,22 +62,26 @@ void hpfs_error(struct super_block *s, const char *fmt, ...) vsnprintf(err_buf, sizeof(err_buf), fmt, args); va_end(args); - printk("HPFS: filesystem error: %s", err_buf); + pr_err("filesystem error: %s", err_buf); if (!hpfs_sb(s)->sb_was_error) { if (hpfs_sb(s)->sb_err == 2) { - printk("; crashing the system because you wanted it\n"); + pr_cont("; crashing the system because you wanted it\n"); mark_dirty(s, 0); panic("HPFS panic"); } else if (hpfs_sb(s)->sb_err == 1) { - if (s->s_flags & MS_RDONLY) printk("; already mounted read-only\n"); + if (s->s_flags & MS_RDONLY) + pr_cont("; already mounted read-only\n"); else { - printk("; remounting read-only\n"); + pr_cont("; remounting read-only\n"); mark_dirty(s, 0); s->s_flags |= MS_RDONLY; } - } else if (s->s_flags & MS_RDONLY) printk("; going on - but anything won't be destroyed because it's read-only\n"); - else printk("; corrupted filesystem mounted read/write - your computer will explode within 20 seconds ... but you wanted it so!\n"); - } else printk("\n"); + } else if (s->s_flags & MS_RDONLY) + pr_cont("; going on - but anything won't be destroyed because it's read-only\n"); + else + pr_cont("; corrupted filesystem mounted read/write - your computer will explode within 20 seconds ... but you wanted it so!\n"); + } else + pr_cont("\n"); hpfs_sb(s)->sb_was_error = 1; } @@ -292,7 +296,7 @@ static int parse_opts(char *opts, kuid_t *uid, kgid_t *gid, umode_t *umask, if (!opts) return 1; - /*printk("Parsing opts: '%s'\n",opts);*/ + /*pr_info("Parsing opts: '%s'\n",opts);*/ while ((p = strsep(&opts, ",")) != NULL) { substring_t args[MAX_OPT_ARGS]; @@ -387,7 +391,7 @@ static int parse_opts(char *opts, kuid_t *uid, kgid_t *gid, umode_t *umask, static inline void hpfs_help(void) { - printk("\n\ + pr_info("\n\ HPFS filesystem options:\n\ help do not mount and display this text\n\ uid=xxx set uid of files that don't have uid specified in eas\n\ @@ -434,7 +438,7 @@ static int hpfs_remount_fs(struct super_block *s, int *flags, char *data) if (!(o = parse_opts(data, &uid, &gid, &umask, &lowercase, &eas, &chk, &errs, &chkdsk, ×hift))) { - printk("HPFS: bad mount options.\n"); + pr_err("bad mount options.\n"); goto out_err; } if (o == 2) { @@ -442,7 +446,7 @@ static int hpfs_remount_fs(struct super_block *s, int *flags, char *data) goto out_err; } if (timeshift != sbi->sb_timeshift) { - printk("HPFS: timeshift can't be changed using remount.\n"); + pr_err("timeshift can't be changed using remount.\n"); goto out_err; } @@ -523,7 +527,7 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) if (!(o = parse_opts(options, &uid, &gid, &umask, &lowercase, &eas, &chk, &errs, &chkdsk, ×hift))) { - printk("HPFS: bad mount options.\n"); + pr_err("bad mount options.\n"); goto bail0; } if (o==2) { @@ -542,16 +546,17 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) if (/*le16_to_cpu(bootblock->magic) != BB_MAGIC ||*/ le32_to_cpu(superblock->magic) != SB_MAGIC || le32_to_cpu(spareblock->magic) != SP_MAGIC) { - if (!silent) printk("HPFS: Bad magic ... probably not HPFS\n"); + if (!silent) + pr_err("Bad magic ... probably not HPFS\n"); goto bail4; } /* Check version */ if (!(s->s_flags & MS_RDONLY) && superblock->funcversion != 2 && superblock->funcversion != 3) { - printk("HPFS: Bad version %d,%d. Mount readonly to go around\n", + pr_err("Bad version %d,%d. Mount readonly to go around\n", (int)superblock->version, (int)superblock->funcversion); - printk("HPFS: please try recent version of HPFS driver at http://artax.karlin.mff.cuni.cz/~mikulas/vyplody/hpfs/index-e.cgi and if it still can't understand this format, contact author - mikulas@artax.karlin.mff.cuni.cz\n"); + pr_err("please try recent version of HPFS driver at http://artax.karlin.mff.cuni.cz/~mikulas/vyplody/hpfs/index-e.cgi and if it still can't understand this format, contact author - mikulas@artax.karlin.mff.cuni.cz\n"); goto bail4; } @@ -597,7 +602,7 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) /* Check for general fs errors*/ if (spareblock->dirty && !spareblock->old_wrote) { if (errs == 2) { - printk("HPFS: Improperly stopped, not mounted\n"); + pr_err("Improperly stopped, not mounted\n"); goto bail4; } hpfs_error(s, "improperly stopped"); @@ -611,22 +616,25 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) if (spareblock->hotfixes_used || spareblock->n_spares_used) { if (errs >= 2) { - printk("HPFS: Hotfixes not supported here, try chkdsk\n"); + pr_err("Hotfixes not supported here, try chkdsk\n"); mark_dirty(s, 0); goto bail4; } hpfs_error(s, "hotfixes not supported here, try chkdsk"); - if (errs == 0) printk("HPFS: Proceeding, but your filesystem will be probably corrupted by this driver...\n"); - else printk("HPFS: This driver may read bad files or crash when operating on disk with hotfixes.\n"); + if (errs == 0) + pr_err("Proceeding, but your filesystem will be probably corrupted by this driver...\n"); + else + pr_err("This driver may read bad files or crash when operating on disk with hotfixes.\n"); } if (le32_to_cpu(spareblock->n_dnode_spares) != le32_to_cpu(spareblock->n_dnode_spares_free)) { if (errs >= 2) { - printk("HPFS: Spare dnodes used, try chkdsk\n"); + pr_err("Spare dnodes used, try chkdsk\n"); mark_dirty(s, 0); goto bail4; } hpfs_error(s, "warning: spare dnodes used, try chkdsk"); - if (errs == 0) printk("HPFS: Proceeding, but your filesystem could be corrupted if you delete files or directories\n"); + if (errs == 0) + pr_err("Proceeding, but your filesystem could be corrupted if you delete files or directories\n"); } if (chk) { unsigned a; @@ -645,12 +653,13 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) goto bail4; } sbi->sb_dirband_size = a; - } else printk("HPFS: You really don't want any checks? You are crazy...\n"); + } else + pr_err("You really don't want any checks? You are crazy...\n"); /* Load code page table */ if (le32_to_cpu(spareblock->n_code_pages)) if (!(sbi->sb_cp_table = hpfs_load_code_page(s, le32_to_cpu(spareblock->code_page_dir)))) - printk("HPFS: Warning: code page support is disabled\n"); + pr_err("code page support is disabled\n"); brelse(bh2); brelse(bh1); diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index e19d4c0cacae..1e2872b25343 100644 --- a/fs/hugetlbfs/inode.c +++ b/fs/hugetlbfs/inode.c @@ -6,6 +6,8 @@ * Copyright (C) 2002 Linus Torvalds. */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/module.h> #include <linux/thread_info.h> #include <asm/current.h> @@ -475,7 +477,7 @@ static struct inode *hugetlbfs_get_root(struct super_block *sb, * annotation because huge_pmd_share() does an allocation under * i_mmap_mutex. */ -struct lock_class_key hugetlbfs_i_mmap_mutex_key; +static struct lock_class_key hugetlbfs_i_mmap_mutex_key; static struct inode *hugetlbfs_get_inode(struct super_block *sb, struct inode *dir, @@ -823,8 +825,7 @@ hugetlbfs_parse_options(char *options, struct hugetlbfs_config *pconfig) ps = memparse(args[0].from, &rest); pconfig->hstate = size_to_hstate(ps); if (!pconfig->hstate) { - printk(KERN_ERR - "hugetlbfs: Unsupported page size %lu MB\n", + pr_err("Unsupported page size %lu MB\n", ps >> 20); return -EINVAL; } @@ -832,8 +833,7 @@ hugetlbfs_parse_options(char *options, struct hugetlbfs_config *pconfig) } default: - printk(KERN_ERR "hugetlbfs: Bad mount option: \"%s\"\n", - p); + pr_err("Bad mount option: \"%s\"\n", p); return -EINVAL; break; } @@ -853,8 +853,7 @@ hugetlbfs_parse_options(char *options, struct hugetlbfs_config *pconfig) return 0; bad_val: - printk(KERN_ERR "hugetlbfs: Bad value '%s' for mount option '%s'\n", - args[0].from, p); + pr_err("Bad value '%s' for mount option '%s'\n", args[0].from, p); return -EINVAL; } @@ -902,8 +901,7 @@ hugetlbfs_fill_super(struct super_block *sb, void *data, int silent) goto out_free; return 0; out_free: - if (sbinfo->spool) - kfree(sbinfo->spool); + kfree(sbinfo->spool); kfree(sbinfo); return -ENOMEM; } @@ -939,7 +937,7 @@ static int get_hstate_idx(int page_size_log) return h - hstates; } -static struct dentry_operations anon_ops = { +static const struct dentry_operations anon_ops = { .d_dname = simple_dname }; @@ -970,8 +968,7 @@ struct file *hugetlb_file_setup(const char *name, size_t size, *user = current_user(); if (user_shm_lock(size, *user)) { task_lock(current); - printk_once(KERN_WARNING - "%s (%d): Using mlock ulimits for SHM_HUGETLB is deprecated\n", + pr_warn_once("%s (%d): Using mlock ulimits for SHM_HUGETLB is deprecated\n", current->comm, current->pid); task_unlock(current); } else { @@ -1031,7 +1028,7 @@ static int __init init_hugetlbfs_fs(void) int i; if (!hugepages_supported()) { - pr_info("hugetlbfs: disabling because there are no supported hugepage sizes\n"); + pr_info("disabling because there are no supported hugepage sizes\n"); return -ENOTSUPP; } @@ -1060,7 +1057,7 @@ static int __init init_hugetlbfs_fs(void) buf); if (IS_ERR(hugetlbfs_vfsmount[i])) { - pr_err("hugetlb: Cannot mount internal hugetlbfs for " + pr_err("Cannot mount internal hugetlbfs for " "page size %uK", ps_kb); error = PTR_ERR(hugetlbfs_vfsmount[i]); hugetlbfs_vfsmount[i] = NULL; diff --git a/fs/inode.c b/fs/inode.c index f96d2a6f88cc..2feb9b69f1be 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -105,7 +105,7 @@ long get_nr_dirty_inodes(void) * Handle nr_inode sysctl */ #ifdef CONFIG_SYSCTL -int proc_nr_inodes(ctl_table *table, int write, +int proc_nr_inodes(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { inodes_stat.nr_inodes = get_nr_inodes(); diff --git a/fs/ioprio.c b/fs/ioprio.c deleted file mode 100644 index e50170ca7c33..000000000000 --- a/fs/ioprio.c +++ /dev/null @@ -1,241 +0,0 @@ -/* - * fs/ioprio.c - * - * Copyright (C) 2004 Jens Axboe <axboe@kernel.dk> - * - * Helper functions for setting/querying io priorities of processes. The - * system calls closely mimmick getpriority/setpriority, see the man page for - * those. The prio argument is a composite of prio class and prio data, where - * the data argument has meaning within that class. The standard scheduling - * classes have 8 distinct prio levels, with 0 being the highest prio and 7 - * being the lowest. - * - * IOW, setting BE scheduling class with prio 2 is done ala: - * - * unsigned int prio = (IOPRIO_CLASS_BE << IOPRIO_CLASS_SHIFT) | 2; - * - * ioprio_set(PRIO_PROCESS, pid, prio); - * - * See also Documentation/block/ioprio.txt - * - */ -#include <linux/gfp.h> -#include <linux/kernel.h> -#include <linux/export.h> -#include <linux/ioprio.h> -#include <linux/blkdev.h> -#include <linux/capability.h> -#include <linux/syscalls.h> -#include <linux/security.h> -#include <linux/pid_namespace.h> - -int set_task_ioprio(struct task_struct *task, int ioprio) -{ - int err; - struct io_context *ioc; - const struct cred *cred = current_cred(), *tcred; - - rcu_read_lock(); - tcred = __task_cred(task); - if (!uid_eq(tcred->uid, cred->euid) && - !uid_eq(tcred->uid, cred->uid) && !capable(CAP_SYS_NICE)) { - rcu_read_unlock(); - return -EPERM; - } - rcu_read_unlock(); - - err = security_task_setioprio(task, ioprio); - if (err) - return err; - - ioc = get_task_io_context(task, GFP_ATOMIC, NUMA_NO_NODE); - if (ioc) { - ioc->ioprio = ioprio; - put_io_context(ioc); - } - - return err; -} -EXPORT_SYMBOL_GPL(set_task_ioprio); - -SYSCALL_DEFINE3(ioprio_set, int, which, int, who, int, ioprio) -{ - int class = IOPRIO_PRIO_CLASS(ioprio); - int data = IOPRIO_PRIO_DATA(ioprio); - struct task_struct *p, *g; - struct user_struct *user; - struct pid *pgrp; - kuid_t uid; - int ret; - - switch (class) { - case IOPRIO_CLASS_RT: - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - /* fall through, rt has prio field too */ - case IOPRIO_CLASS_BE: - if (data >= IOPRIO_BE_NR || data < 0) - return -EINVAL; - - break; - case IOPRIO_CLASS_IDLE: - break; - case IOPRIO_CLASS_NONE: - if (data) - return -EINVAL; - break; - default: - return -EINVAL; - } - - ret = -ESRCH; - rcu_read_lock(); - switch (which) { - case IOPRIO_WHO_PROCESS: - if (!who) - p = current; - else - p = find_task_by_vpid(who); - if (p) - ret = set_task_ioprio(p, ioprio); - break; - case IOPRIO_WHO_PGRP: - if (!who) - pgrp = task_pgrp(current); - else - pgrp = find_vpid(who); - do_each_pid_thread(pgrp, PIDTYPE_PGID, p) { - ret = set_task_ioprio(p, ioprio); - if (ret) - break; - } while_each_pid_thread(pgrp, PIDTYPE_PGID, p); - break; - case IOPRIO_WHO_USER: - uid = make_kuid(current_user_ns(), who); - if (!uid_valid(uid)) - break; - if (!who) - user = current_user(); - else - user = find_user(uid); - - if (!user) - break; - - do_each_thread(g, p) { - if (!uid_eq(task_uid(p), uid)) - continue; - ret = set_task_ioprio(p, ioprio); - if (ret) - goto free_uid; - } while_each_thread(g, p); -free_uid: - if (who) - free_uid(user); - break; - default: - ret = -EINVAL; - } - - rcu_read_unlock(); - return ret; -} - -static int get_task_ioprio(struct task_struct *p) -{ - int ret; - - ret = security_task_getioprio(p); - if (ret) - goto out; - ret = IOPRIO_PRIO_VALUE(IOPRIO_CLASS_NONE, IOPRIO_NORM); - if (p->io_context) - ret = p->io_context->ioprio; -out: - return ret; -} - -int ioprio_best(unsigned short aprio, unsigned short bprio) -{ - unsigned short aclass = IOPRIO_PRIO_CLASS(aprio); - unsigned short bclass = IOPRIO_PRIO_CLASS(bprio); - - if (aclass == IOPRIO_CLASS_NONE) - aclass = IOPRIO_CLASS_BE; - if (bclass == IOPRIO_CLASS_NONE) - bclass = IOPRIO_CLASS_BE; - - if (aclass == bclass) - return min(aprio, bprio); - if (aclass > bclass) - return bprio; - else - return aprio; -} - -SYSCALL_DEFINE2(ioprio_get, int, which, int, who) -{ - struct task_struct *g, *p; - struct user_struct *user; - struct pid *pgrp; - kuid_t uid; - int ret = -ESRCH; - int tmpio; - - rcu_read_lock(); - switch (which) { - case IOPRIO_WHO_PROCESS: - if (!who) - p = current; - else - p = find_task_by_vpid(who); - if (p) - ret = get_task_ioprio(p); - break; - case IOPRIO_WHO_PGRP: - if (!who) - pgrp = task_pgrp(current); - else - pgrp = find_vpid(who); - do_each_pid_thread(pgrp, PIDTYPE_PGID, p) { - tmpio = get_task_ioprio(p); - if (tmpio < 0) - continue; - if (ret == -ESRCH) - ret = tmpio; - else - ret = ioprio_best(ret, tmpio); - } while_each_pid_thread(pgrp, PIDTYPE_PGID, p); - break; - case IOPRIO_WHO_USER: - uid = make_kuid(current_user_ns(), who); - if (!who) - user = current_user(); - else - user = find_user(uid); - - if (!user) - break; - - do_each_thread(g, p) { - if (!uid_eq(task_uid(p), user->uid)) - continue; - tmpio = get_task_ioprio(p); - if (tmpio < 0) - continue; - if (ret == -ESRCH) - ret = tmpio; - else - ret = ioprio_best(ret, tmpio); - } while_each_thread(g, p); - - if (who) - free_uid(user); - break; - default: - ret = -EINVAL; - } - - rcu_read_unlock(); - return ret; -} diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c index 5f26139a165a..6fac74349856 100644 --- a/fs/jbd2/commit.c +++ b/fs/jbd2/commit.c @@ -43,7 +43,7 @@ static void journal_end_buffer_io_sync(struct buffer_head *bh, int uptodate) clear_buffer_uptodate(bh); if (orig_bh) { clear_bit_unlock(BH_Shadow, &orig_bh->b_state); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&orig_bh->b_state, BH_Shadow); } unlock_buffer(bh); @@ -239,7 +239,7 @@ static int journal_submit_data_buffers(journal_t *journal, spin_lock(&journal->j_list_lock); J_ASSERT(jinode->i_transaction == commit_transaction); clear_bit(__JI_COMMIT_RUNNING, &jinode->i_flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&jinode->i_flags, __JI_COMMIT_RUNNING); } spin_unlock(&journal->j_list_lock); @@ -277,7 +277,7 @@ static int journal_finish_inode_data_buffers(journal_t *journal, } spin_lock(&journal->j_list_lock); clear_bit(__JI_COMMIT_RUNNING, &jinode->i_flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&jinode->i_flags, __JI_COMMIT_RUNNING); } diff --git a/fs/jffs2/background.c b/fs/jffs2/background.c index 2b60ce1996aa..bb9cebc9ca8a 100644 --- a/fs/jffs2/background.c +++ b/fs/jffs2/background.c @@ -75,10 +75,13 @@ void jffs2_stop_garbage_collect_thread(struct jffs2_sb_info *c) static int jffs2_garbage_collect_thread(void *_c) { struct jffs2_sb_info *c = _c; + sigset_t hupmask; + siginitset(&hupmask, sigmask(SIGHUP)); allow_signal(SIGKILL); allow_signal(SIGSTOP); allow_signal(SIGCONT); + allow_signal(SIGHUP); c->gc_task = current; complete(&c->gc_thread_start); @@ -87,7 +90,7 @@ static int jffs2_garbage_collect_thread(void *_c) set_freezable(); for (;;) { - allow_signal(SIGHUP); + sigprocmask(SIG_UNBLOCK, &hupmask, NULL); again: spin_lock(&c->erase_completion_lock); if (!jffs2_thread_should_wake(c)) { @@ -95,10 +98,9 @@ static int jffs2_garbage_collect_thread(void *_c) spin_unlock(&c->erase_completion_lock); jffs2_dbg(1, "%s(): sleeping...\n", __func__); schedule(); - } else + } else { spin_unlock(&c->erase_completion_lock); - - + } /* Problem - immediately after bootup, the GCD spends a lot * of time in places like jffs2_kill_fragtree(); so much so * that userspace processes (like gdm and X) are starved @@ -150,7 +152,7 @@ static int jffs2_garbage_collect_thread(void *_c) } } /* We don't want SIGHUP to interrupt us. STOP and KILL are OK though. */ - disallow_signal(SIGHUP); + sigprocmask(SIG_BLOCK, &hupmask, NULL); jffs2_dbg(1, "%s(): pass\n", __func__); if (jffs2_garbage_collect_pass(c) == -ENOSPC) { diff --git a/fs/jfs/acl.c b/fs/jfs/acl.c index 5a8ea16eedbc..0c8ca830b113 100644 --- a/fs/jfs/acl.c +++ b/fs/jfs/acl.c @@ -83,13 +83,15 @@ static int __jfs_set_acl(tid_t tid, struct inode *inode, int type, switch (type) { case ACL_TYPE_ACCESS: ea_name = POSIX_ACL_XATTR_ACCESS; - rc = posix_acl_equiv_mode(acl, &inode->i_mode); - if (rc < 0) - return rc; - inode->i_ctime = CURRENT_TIME; - mark_inode_dirty(inode); - if (rc == 0) - acl = NULL; + if (acl) { + rc = posix_acl_equiv_mode(acl, &inode->i_mode); + if (rc < 0) + return rc; + inode->i_ctime = CURRENT_TIME; + mark_inode_dirty(inode); + if (rc == 0) + acl = NULL; + } break; case ACL_TYPE_DEFAULT: ea_name = POSIX_ACL_XATTR_DEFAULT; diff --git a/fs/jfs/jfs_dmap.c b/fs/jfs/jfs_dmap.c index 370d7b6c5942..2d514c7affc2 100644 --- a/fs/jfs/jfs_dmap.c +++ b/fs/jfs/jfs_dmap.c @@ -1208,7 +1208,7 @@ static int dbAllocNext(struct bmap * bmp, struct dmap * dp, s64 blkno, * by this leaf. */ l2size = - min((int)leaf[word], NLSTOL2BSZ(nwords)); + min_t(int, leaf[word], NLSTOL2BSZ(nwords)); /* determine how many words were handled. */ @@ -1902,7 +1902,7 @@ dbAllocCtl(struct bmap * bmp, s64 nblocks, int l2nb, s64 blkno, s64 * results) /* determine how many blocks to allocate from this dmap. */ - nb = min(n, (s64)BPERDMAP); + nb = min_t(s64, n, BPERDMAP); /* allocate the blocks from the dmap. */ @@ -2260,7 +2260,8 @@ static void dbAllocBits(struct bmap * bmp, struct dmap * dp, s64 blkno, * of bits being allocated and the l2 number * of bits currently described by this leaf. */ - size = min((int)leaf[word], NLSTOL2BSZ(nwords)); + size = min_t(int, leaf[word], + NLSTOL2BSZ(nwords)); /* update the leaf to reflect the allocation. * in addition to setting the leaf value to @@ -3563,7 +3564,7 @@ int dbExtendFS(struct inode *ipbmap, s64 blkno, s64 nblocks) if (mp == NULL) goto errout; - n = min(nblocks, (s64)BPERDMAP); + n = min_t(s64, nblocks, BPERDMAP); } dp = (struct dmap *) mp->data; diff --git a/fs/jfs/jfs_inode.c b/fs/jfs/jfs_inode.c index 7f464c513ba0..6b0f816201a2 100644 --- a/fs/jfs/jfs_inode.c +++ b/fs/jfs/jfs_inode.c @@ -29,20 +29,20 @@ void jfs_set_inode_flags(struct inode *inode) { unsigned int flags = JFS_IP(inode)->mode2; - - inode->i_flags &= ~(S_IMMUTABLE | S_APPEND | - S_NOATIME | S_DIRSYNC | S_SYNC); + unsigned int new_fl = 0; if (flags & JFS_IMMUTABLE_FL) - inode->i_flags |= S_IMMUTABLE; + new_fl |= S_IMMUTABLE; if (flags & JFS_APPEND_FL) - inode->i_flags |= S_APPEND; + new_fl |= S_APPEND; if (flags & JFS_NOATIME_FL) - inode->i_flags |= S_NOATIME; + new_fl |= S_NOATIME; if (flags & JFS_DIRSYNC_FL) - inode->i_flags |= S_DIRSYNC; + new_fl |= S_DIRSYNC; if (flags & JFS_SYNC_FL) - inode->i_flags |= S_SYNC; + new_fl |= S_SYNC; + inode_set_flags(inode, new_fl, S_IMMUTABLE | S_APPEND | S_NOATIME | + S_DIRSYNC | S_SYNC); } void jfs_get_inode_flags(struct jfs_inode_info *jfs_ip) diff --git a/fs/jfs/jfs_logmgr.c b/fs/jfs/jfs_logmgr.c index 8d811e02b4b9..0acddf60af55 100644 --- a/fs/jfs/jfs_logmgr.c +++ b/fs/jfs/jfs_logmgr.c @@ -167,7 +167,7 @@ do { \ * Global list of active external journals */ static LIST_HEAD(jfs_external_logs); -static struct jfs_log *dummy_log = NULL; +static struct jfs_log *dummy_log; static DEFINE_MUTEX(jfs_log_mutex); /* diff --git a/fs/jfs/super.c b/fs/jfs/super.c index 97f7fda51890..adf8cb045b9e 100644 --- a/fs/jfs/super.c +++ b/fs/jfs/super.c @@ -50,14 +50,14 @@ MODULE_DESCRIPTION("The Journaled Filesystem (JFS)"); MODULE_AUTHOR("Steve Best/Dave Kleikamp/Barry Arndt, IBM"); MODULE_LICENSE("GPL"); -static struct kmem_cache * jfs_inode_cachep; +static struct kmem_cache *jfs_inode_cachep; static const struct super_operations jfs_super_operations; static const struct export_operations jfs_export_operations; static struct file_system_type jfs_fs_type; #define MAX_COMMIT_THREADS 64 -static int commit_threads = 0; +static int commit_threads; module_param(commit_threads, int, 0); MODULE_PARM_DESC(commit_threads, "Number of commit threads"); @@ -84,8 +84,7 @@ static void jfs_handle_error(struct super_block *sb) panic("JFS (device %s): panic forced after error\n", sb->s_id); else if (sbi->flag & JFS_ERR_REMOUNT_RO) { - jfs_err("ERROR: (device %s): remounting filesystem " - "as read-only\n", + jfs_err("ERROR: (device %s): remounting filesystem as read-only\n", sb->s_id); sb->s_flags |= MS_RDONLY; } @@ -273,7 +272,10 @@ static int parse_options(char *options, struct super_block *sb, s64 *newLVSize, case Opt_resize: { char *resize = args[0].from; - *newLVSize = simple_strtoull(resize, &resize, 0); + int rc = kstrtoll(resize, 0, newLVSize); + + if (rc) + goto cleanup; break; } case Opt_resize_nosize: @@ -327,7 +329,11 @@ static int parse_options(char *options, struct super_block *sb, s64 *newLVSize, case Opt_uid: { char *uid = args[0].from; - uid_t val = simple_strtoul(uid, &uid, 0); + uid_t val; + int rc = kstrtouint(uid, 0, &val); + + if (rc) + goto cleanup; sbi->uid = make_kuid(current_user_ns(), val); if (!uid_valid(sbi->uid)) goto cleanup; @@ -337,7 +343,11 @@ static int parse_options(char *options, struct super_block *sb, s64 *newLVSize, case Opt_gid: { char *gid = args[0].from; - gid_t val = simple_strtoul(gid, &gid, 0); + gid_t val; + int rc = kstrtouint(gid, 0, &val); + + if (rc) + goto cleanup; sbi->gid = make_kgid(current_user_ns(), val); if (!gid_valid(sbi->gid)) goto cleanup; @@ -347,7 +357,10 @@ static int parse_options(char *options, struct super_block *sb, s64 *newLVSize, case Opt_umask: { char *umask = args[0].from; - sbi->umask = simple_strtoul(umask, &umask, 8); + int rc = kstrtouint(umask, 8, &sbi->umask); + + if (rc) + goto cleanup; if (sbi->umask & ~0777) { pr_err("JFS: Invalid value of umask\n"); goto cleanup; @@ -363,12 +376,10 @@ static int parse_options(char *options, struct super_block *sb, s64 *newLVSize, * -> user has more control over the online trimming */ sbi->minblks_trim = 64; - if (blk_queue_discard(q)) { + if (blk_queue_discard(q)) *flag |= JFS_DISCARD; - } else { - pr_err("JFS: discard option " \ - "not supported on device\n"); - } + else + pr_err("JFS: discard option not supported on device\n"); break; } @@ -380,20 +391,21 @@ static int parse_options(char *options, struct super_block *sb, s64 *newLVSize, { struct request_queue *q = bdev_get_queue(sb->s_bdev); char *minblks_trim = args[0].from; + int rc; if (blk_queue_discard(q)) { *flag |= JFS_DISCARD; - sbi->minblks_trim = simple_strtoull( - minblks_trim, &minblks_trim, 0); - } else { - pr_err("JFS: discard option " \ - "not supported on device\n"); - } + rc = kstrtouint(minblks_trim, 0, + &sbi->minblks_trim); + if (rc) + goto cleanup; + } else + pr_err("JFS: discard option not supported on device\n"); break; } default: - printk("jfs: Unrecognized mount option \"%s\" " - " or missing value\n", p); + printk("jfs: Unrecognized mount option \"%s\" or missing value\n", + p); goto cleanup; } } @@ -419,14 +431,12 @@ static int jfs_remount(struct super_block *sb, int *flags, char *data) int ret; sync_filesystem(sb); - if (!parse_options(data, sb, &newLVSize, &flag)) { + if (!parse_options(data, sb, &newLVSize, &flag)) return -EINVAL; - } if (newLVSize) { if (sb->s_flags & MS_RDONLY) { - pr_err("JFS: resize requires volume" \ - " to be mounted read-write\n"); + pr_err("JFS: resize requires volume to be mounted read-write\n"); return -EROFS; } rc = jfs_extendfs(sb, newLVSize, 0); @@ -452,9 +462,8 @@ static int jfs_remount(struct super_block *sb, int *flags, char *data) } if ((!(sb->s_flags & MS_RDONLY)) && (*flags & MS_RDONLY)) { rc = dquot_suspend(sb, -1); - if (rc < 0) { + if (rc < 0) return rc; - } rc = jfs_umount_rw(sb); JFS_SBI(sb)->flag = flag; return rc; @@ -487,7 +496,7 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent) if (!new_valid_dev(sb->s_bdev->bd_dev)) return -EOVERFLOW; - sbi = kzalloc(sizeof (struct jfs_sb_info), GFP_KERNEL); + sbi = kzalloc(sizeof(struct jfs_sb_info), GFP_KERNEL); if (!sbi) return -ENOMEM; @@ -548,9 +557,8 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent) rc = jfs_mount(sb); if (rc) { - if (!silent) { + if (!silent) jfs_err("jfs_mount failed w/return code = %d", rc); - } goto out_mount_failed; } if (sb->s_flags & MS_RDONLY) @@ -587,7 +595,8 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent) * Page cache is indexed by long. * I would use MAX_LFS_FILESIZE, but it's only half as big */ - sb->s_maxbytes = min(((u64) PAGE_CACHE_SIZE << 32) - 1, (u64)sb->s_maxbytes); + sb->s_maxbytes = min(((u64) PAGE_CACHE_SIZE << 32) - 1, + (u64)sb->s_maxbytes); #endif sb->s_time_gran = 1; return 0; @@ -597,9 +606,8 @@ out_no_root: out_no_rw: rc = jfs_umount(sb); - if (rc) { + if (rc) jfs_err("jfs_umount failed with return code %d", rc); - } out_mount_failed: filemap_write_and_wait(sbi->direct_inode->i_mapping); truncate_inode_pages(sbi->direct_inode->i_mapping, 0); @@ -924,7 +932,8 @@ static int __init init_jfs_fs(void) commit_threads = MAX_COMMIT_THREADS; for (i = 0; i < commit_threads; i++) { - jfsCommitThread[i] = kthread_run(jfs_lazycommit, NULL, "jfsCommit"); + jfsCommitThread[i] = kthread_run(jfs_lazycommit, NULL, + "jfsCommit"); if (IS_ERR(jfsCommitThread[i])) { rc = PTR_ERR(jfsCommitThread[i]); jfs_err("init_jfs_fs: fork failed w/rc = %d", rc); diff --git a/fs/kernfs/dir.c b/fs/kernfs/dir.c index ac127cd008bf..a693f5b01ae6 100644 --- a/fs/kernfs/dir.c +++ b/fs/kernfs/dir.c @@ -714,6 +714,7 @@ struct kernfs_root *kernfs_create_root(struct kernfs_syscall_ops *scops, return ERR_PTR(-ENOMEM); ida_init(&root->ino_ida); + INIT_LIST_HEAD(&root->supers); kn = __kernfs_new_node(root, "", S_IFDIR | S_IRUGO | S_IXUGO, KERNFS_DIR); diff --git a/fs/kernfs/file.c b/fs/kernfs/file.c index 5e9a80cfc3d8..e3d37f607f97 100644 --- a/fs/kernfs/file.c +++ b/fs/kernfs/file.c @@ -14,6 +14,7 @@ #include <linux/poll.h> #include <linux/pagemap.h> #include <linux/sched.h> +#include <linux/fsnotify.h> #include "kernfs-internal.h" @@ -790,20 +791,48 @@ static unsigned int kernfs_fop_poll(struct file *filp, poll_table *wait) */ void kernfs_notify(struct kernfs_node *kn) { + struct kernfs_root *root = kernfs_root(kn); struct kernfs_open_node *on; + struct kernfs_super_info *info; unsigned long flags; + if (WARN_ON(kernfs_type(kn) != KERNFS_FILE)) + return; + + /* kick poll */ spin_lock_irqsave(&kernfs_open_node_lock, flags); - if (!WARN_ON(kernfs_type(kn) != KERNFS_FILE)) { - on = kn->attr.open; - if (on) { - atomic_inc(&on->event); - wake_up_interruptible(&on->poll); - } + on = kn->attr.open; + if (on) { + atomic_inc(&on->event); + wake_up_interruptible(&on->poll); } spin_unlock_irqrestore(&kernfs_open_node_lock, flags); + + /* kick fsnotify */ + mutex_lock(&kernfs_mutex); + + list_for_each_entry(info, &root->supers, node) { + struct inode *inode; + struct dentry *dentry; + + inode = ilookup(info->sb, kn->ino); + if (!inode) + continue; + + dentry = d_find_any_alias(inode); + if (dentry) { + fsnotify_parent(NULL, dentry, FS_MODIFY); + fsnotify(inode, FS_MODIFY, inode, FSNOTIFY_EVENT_INODE, + NULL, 0); + dput(dentry); + } + + iput(inode); + } + + mutex_unlock(&kernfs_mutex); } EXPORT_SYMBOL_GPL(kernfs_notify); diff --git a/fs/kernfs/kernfs-internal.h b/fs/kernfs/kernfs-internal.h index 8be13b2a079b..dc84a3ef9ca2 100644 --- a/fs/kernfs/kernfs-internal.h +++ b/fs/kernfs/kernfs-internal.h @@ -49,6 +49,8 @@ static inline struct kernfs_root *kernfs_root(struct kernfs_node *kn) * mount.c */ struct kernfs_super_info { + struct super_block *sb; + /* * The root associated with this super_block. Each super_block is * identified by the root and ns it's associated with. @@ -62,6 +64,9 @@ struct kernfs_super_info { * an array and compare kernfs_node tag against every entry. */ const void *ns; + + /* anchored at kernfs_root->supers, protected by kernfs_mutex */ + struct list_head node; }; #define kernfs_info(SB) ((struct kernfs_super_info *)(SB->s_fs_info)) diff --git a/fs/kernfs/mount.c b/fs/kernfs/mount.c index 95dcd1d558bb..d171b98a6cdd 100644 --- a/fs/kernfs/mount.c +++ b/fs/kernfs/mount.c @@ -68,6 +68,7 @@ static int kernfs_fill_super(struct super_block *sb, unsigned long magic) struct inode *inode; struct dentry *root; + info->sb = sb; sb->s_blocksize = PAGE_CACHE_SIZE; sb->s_blocksize_bits = PAGE_CACHE_SHIFT; sb->s_magic = magic; @@ -167,12 +168,18 @@ struct dentry *kernfs_mount_ns(struct file_system_type *fs_type, int flags, *new_sb_created = !sb->s_root; if (!sb->s_root) { + struct kernfs_super_info *info = kernfs_info(sb); + error = kernfs_fill_super(sb, magic); if (error) { deactivate_locked_super(sb); return ERR_PTR(error); } sb->s_flags |= MS_ACTIVE; + + mutex_lock(&kernfs_mutex); + list_add(&info->node, &root->supers); + mutex_unlock(&kernfs_mutex); } return dget(sb->s_root); @@ -191,6 +198,10 @@ void kernfs_kill_sb(struct super_block *sb) struct kernfs_super_info *info = kernfs_info(sb); struct kernfs_node *root_kn = sb->s_root->d_fsdata; + mutex_lock(&kernfs_mutex); + list_del(&info->node); + mutex_unlock(&kernfs_mutex); + /* * Remove the superblock from fs_supers/s_instances * so we can't find it, before freeing kernfs_super_info. diff --git a/fs/libfs.c b/fs/libfs.c index a1844244246f..88e3e00e2eca 100644 --- a/fs/libfs.c +++ b/fs/libfs.c @@ -3,6 +3,7 @@ * Library for filesystems writers. */ +#include <linux/blkdev.h> #include <linux/export.h> #include <linux/pagemap.h> #include <linux/slab.h> @@ -923,16 +924,19 @@ struct dentry *generic_fh_to_parent(struct super_block *sb, struct fid *fid, EXPORT_SYMBOL_GPL(generic_fh_to_parent); /** - * generic_file_fsync - generic fsync implementation for simple filesystems + * __generic_file_fsync - generic fsync implementation for simple filesystems + * * @file: file to synchronize + * @start: start offset in bytes + * @end: end offset in bytes (inclusive) * @datasync: only synchronize essential metadata if true * * This is a generic implementation of the fsync method for simple * filesystems which track all non-inode metadata in the buffers list * hanging off the address_space structure. */ -int generic_file_fsync(struct file *file, loff_t start, loff_t end, - int datasync) +int __generic_file_fsync(struct file *file, loff_t start, loff_t end, + int datasync) { struct inode *inode = file->f_mapping->host; int err; @@ -952,10 +956,34 @@ int generic_file_fsync(struct file *file, loff_t start, loff_t end, err = sync_inode_metadata(inode, 1); if (ret == 0) ret = err; + out: mutex_unlock(&inode->i_mutex); return ret; } +EXPORT_SYMBOL(__generic_file_fsync); + +/** + * generic_file_fsync - generic fsync implementation for simple filesystems + * with flush + * @file: file to synchronize + * @start: start offset in bytes + * @end: end offset in bytes (inclusive) + * @datasync: only synchronize essential metadata if true + * + */ + +int generic_file_fsync(struct file *file, loff_t start, loff_t end, + int datasync) +{ + struct inode *inode = file->f_mapping->host; + int err; + + err = __generic_file_fsync(file, start, end, datasync); + if (err) + return err; + return blkdev_issue_flush(inode->i_sb->s_bdev, GFP_KERNEL, NULL); +} EXPORT_SYMBOL(generic_file_fsync); /** diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c index 6bf06a07f3e0..de051cb1f553 100644 --- a/fs/lockd/svc.c +++ b/fs/lockd/svc.c @@ -436,7 +436,7 @@ EXPORT_SYMBOL_GPL(lockd_down); * Sysctl parameters (same as module parameters, different interface). */ -static ctl_table nlm_sysctls[] = { +static struct ctl_table nlm_sysctls[] = { { .procname = "nlm_grace_period", .data = &nlm_grace_period, @@ -490,7 +490,7 @@ static ctl_table nlm_sysctls[] = { { } }; -static ctl_table nlm_sysctl_dir[] = { +static struct ctl_table nlm_sysctl_dir[] = { { .procname = "nfs", .mode = 0555, @@ -499,7 +499,7 @@ static ctl_table nlm_sysctl_dir[] = { { } }; -static ctl_table nlm_sysctl_root[] = { +static struct ctl_table nlm_sysctl_root[] = { { .procname = "fs", .mode = 0555, diff --git a/fs/locks.c b/fs/locks.c index e390bd9ae068..da57c9b7e844 100644 --- a/fs/locks.c +++ b/fs/locks.c @@ -130,6 +130,9 @@ #include <linux/percpu.h> #include <linux/lglock.h> +#define CREATE_TRACE_POINTS +#include <trace/events/filelock.h> + #include <asm/uaccess.h> #define IS_POSIX(fl) (fl->fl_flags & FL_POSIX) @@ -322,6 +325,7 @@ static int flock_make_lock(struct file *filp, struct file_lock **lock, return -ENOMEM; fl->fl_file = filp; + fl->fl_owner = (fl_owner_t)filp; fl->fl_pid = current->tgid; fl->fl_flags = FL_FLOCK; fl->fl_type = type; @@ -427,7 +431,7 @@ static int lease_init(struct file *filp, long type, struct file_lock *fl) if (assign_type(fl, type) != 0) return -EINVAL; - fl->fl_owner = current->files; + fl->fl_owner = (fl_owner_t)filp; fl->fl_pid = current->tgid; fl->fl_file = filp; @@ -1286,6 +1290,7 @@ static void time_out_leases(struct inode *inode) before = &inode->i_flock; while ((fl = *before) && IS_LEASE(fl) && lease_breaking(fl)) { + trace_time_out_leases(inode, fl); if (past_time(fl->fl_downgrade_time)) lease_modify(before, F_RDLCK); if (past_time(fl->fl_break_time)) @@ -1373,6 +1378,7 @@ int __break_lease(struct inode *inode, unsigned int mode, unsigned int type) } if (i_have_this_lease || (mode & O_NONBLOCK)) { + trace_break_lease_noblock(inode, new_fl); error = -EWOULDBLOCK; goto out; } @@ -1384,10 +1390,12 @@ restart: if (break_time == 0) break_time++; locks_insert_block(flock, new_fl); + trace_break_lease_block(inode, new_fl); spin_unlock(&inode->i_lock); error = wait_event_interruptible_timeout(new_fl->fl_wait, !new_fl->fl_next, break_time); spin_lock(&inode->i_lock); + trace_break_lease_unblock(inode, new_fl); locks_delete_block(new_fl); if (error >= 0) { if (error == 0) @@ -1509,6 +1517,8 @@ static int generic_add_lease(struct file *filp, long arg, struct file_lock **flp int error; lease = *flp; + trace_generic_add_lease(inode, lease); + /* * In the delegation case we need mutual exclusion with * a number of operations that take the i_mutex. We trylock @@ -1598,6 +1608,8 @@ static int generic_delete_lease(struct file *filp, struct file_lock **flp) struct dentry *dentry = filp->f_path.dentry; struct inode *inode = dentry->d_inode; + trace_generic_delete_lease(inode, *flp); + for (before = &inode->i_flock; ((fl = *before) != NULL) && IS_LEASE(fl); before = &fl->fl_next) { @@ -2316,6 +2328,7 @@ void locks_remove_file(struct file *filp) if (filp->f_op->flock) { struct file_lock fl = { + .fl_owner = (fl_owner_t)filp, .fl_pid = current->tgid, .fl_file = filp, .fl_flags = FL_FLOCK, @@ -2423,31 +2436,31 @@ static void lock_get_status(struct seq_file *f, struct file_lock *fl, seq_printf(f, "%lld:%s ", id, pfx); if (IS_POSIX(fl)) { if (fl->fl_flags & FL_ACCESS) - seq_printf(f, "ACCESS"); + seq_puts(f, "ACCESS"); else if (IS_OFDLCK(fl)) - seq_printf(f, "OFDLCK"); + seq_puts(f, "OFDLCK"); else - seq_printf(f, "POSIX "); + seq_puts(f, "POSIX "); seq_printf(f, " %s ", (inode == NULL) ? "*NOINODE*" : mandatory_lock(inode) ? "MANDATORY" : "ADVISORY "); } else if (IS_FLOCK(fl)) { if (fl->fl_type & LOCK_MAND) { - seq_printf(f, "FLOCK MSNFS "); + seq_puts(f, "FLOCK MSNFS "); } else { - seq_printf(f, "FLOCK ADVISORY "); + seq_puts(f, "FLOCK ADVISORY "); } } else if (IS_LEASE(fl)) { - seq_printf(f, "LEASE "); + seq_puts(f, "LEASE "); if (lease_breaking(fl)) - seq_printf(f, "BREAKING "); + seq_puts(f, "BREAKING "); else if (fl->fl_file) - seq_printf(f, "ACTIVE "); + seq_puts(f, "ACTIVE "); else - seq_printf(f, "BREAKER "); + seq_puts(f, "BREAKER "); } else { - seq_printf(f, "UNKNOWN UNKNOWN "); + seq_puts(f, "UNKNOWN UNKNOWN "); } if (fl->fl_type & LOCK_MAND) { seq_printf(f, "%s ", @@ -2479,7 +2492,7 @@ static void lock_get_status(struct seq_file *f, struct file_lock *fl, else seq_printf(f, "%Ld %Ld\n", fl->fl_start, fl->fl_end); } else { - seq_printf(f, "0 EOF\n"); + seq_puts(f, "0 EOF\n"); } } diff --git a/fs/mpage.c b/fs/mpage.c index 4979ffa60aaa..5f9ed622274f 100644 --- a/fs/mpage.c +++ b/fs/mpage.c @@ -48,23 +48,7 @@ static void mpage_end_io(struct bio *bio, int err) bio_for_each_segment_all(bv, bio, i) { struct page *page = bv->bv_page; - - if (bio_data_dir(bio) == READ) { - if (!err) { - SetPageUptodate(page); - } else { - ClearPageUptodate(page); - SetPageError(page); - } - unlock_page(page); - } else { /* bio_data_dir(bio) == WRITE */ - if (err) { - SetPageError(page); - if (page->mapping) - set_bit(AS_EIO, &page->mapping->flags); - } - end_page_writeback(page); - } + page_endio(page, bio_data_dir(bio), err); } bio_put(bio); @@ -285,6 +269,11 @@ do_mpage_readpage(struct bio *bio, struct page *page, unsigned nr_pages, alloc_new: if (bio == NULL) { + if (first_hole == blocks_per_page) { + if (!bdev_read_page(bdev, blocks[0] << (blkbits - 9), + page)) + goto out; + } bio = mpage_alloc(bdev, blocks[0] << (blkbits - 9), min_t(int, nr_pages, bio_get_nr_vecs(bdev)), GFP_KERNEL); @@ -439,6 +428,35 @@ struct mpage_data { unsigned use_writepage; }; +/* + * We have our BIO, so we can now mark the buffers clean. Make + * sure to only clean buffers which we know we'll be writing. + */ +static void clean_buffers(struct page *page, unsigned first_unmapped) +{ + unsigned buffer_counter = 0; + struct buffer_head *bh, *head; + if (!page_has_buffers(page)) + return; + head = page_buffers(page); + bh = head; + + do { + if (buffer_counter++ == first_unmapped) + break; + clear_buffer_dirty(bh); + bh = bh->b_this_page; + } while (bh != head); + + /* + * we cannot drop the bh if the page is not uptodate or a concurrent + * readpage would fail to serialize with the bh and it would read from + * disk before we reach the platter. + */ + if (buffer_heads_over_limit && PageUptodate(page)) + try_to_free_buffers(page); +} + static int __mpage_writepage(struct page *page, struct writeback_control *wbc, void *data) { @@ -574,6 +592,13 @@ page_is_mapped: alloc_new: if (bio == NULL) { + if (first_unmapped == blocks_per_page) { + if (!bdev_write_page(bdev, blocks[0] << (blkbits - 9), + page, wbc)) { + clean_buffers(page, first_unmapped); + goto out; + } + } bio = mpage_alloc(bdev, blocks[0] << (blkbits - 9), bio_get_nr_vecs(bdev), GFP_NOFS|__GFP_HIGH); if (bio == NULL) @@ -591,30 +616,7 @@ alloc_new: goto alloc_new; } - /* - * OK, we have our BIO, so we can now mark the buffers clean. Make - * sure to only clean buffers which we know we'll be writing. - */ - if (page_has_buffers(page)) { - struct buffer_head *head = page_buffers(page); - struct buffer_head *bh = head; - unsigned buffer_counter = 0; - - do { - if (buffer_counter++ == first_unmapped) - break; - clear_buffer_dirty(bh); - bh = bh->b_this_page; - } while (bh != head); - - /* - * we cannot drop the bh if the page is not uptodate - * or a concurrent readpage would fail to serialize with the bh - * and it would read from disk before we reach the platter. - */ - if (buffer_heads_over_limit && PageUptodate(page)) - try_to_free_buffers(page); - } + clean_buffers(page, first_unmapped); BUG_ON(PageWriteback(page)); set_page_writeback(page); diff --git a/fs/ncpfs/getopt.c b/fs/ncpfs/getopt.c index 03ffde1f44d6..344889cd120e 100644 --- a/fs/ncpfs/getopt.c +++ b/fs/ncpfs/getopt.c @@ -53,15 +53,14 @@ int ncp_getopt(const char *caller, char **options, const struct ncp_option *opts return -EINVAL; } if (opts->has_arg & OPT_INT) { - char* v; + int rc = kstrtoul(val, 0, value); - *value = simple_strtoul(val, &v, 0); - if (!*v) { - return opts->val; + if (rc) { + pr_info("%s: invalid numeric value in %s=%s\n", + caller, token, val); + return rc; } - pr_info("%s: invalid numeric value in %s=%s\n", - caller, token, val); - return -EDOM; + return opts->val; } if (opts->has_arg & OPT_STRING) { return opts->val; diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index d9f3d067cd15..4a3d4ef76127 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -2032,9 +2032,9 @@ static void nfs_access_free_entry(struct nfs_access_entry *entry) { put_rpccred(entry->cred); kfree(entry); - smp_mb__before_atomic_dec(); + smp_mb__before_atomic(); atomic_long_dec(&nfs_access_nr_entries); - smp_mb__after_atomic_dec(); + smp_mb__after_atomic(); } static void nfs_access_free_list(struct list_head *head) @@ -2082,9 +2082,9 @@ nfs_access_cache_scan(struct shrinker *shrink, struct shrink_control *sc) else { remove_lru_entry: list_del_init(&nfsi->access_cache_inode_lru); - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(NFS_INO_ACL_LRU_SET, &nfsi->flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); } spin_unlock(&inode->i_lock); } @@ -2232,9 +2232,9 @@ void nfs_access_add_cache(struct inode *inode, struct nfs_access_entry *set) nfs_access_add_rbtree(inode, cache); /* Update accounting */ - smp_mb__before_atomic_inc(); + smp_mb__before_atomic(); atomic_long_inc(&nfs_access_nr_entries); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); /* Add inode to global LRU list */ if (!test_bit(NFS_INO_ACL_LRU_SET, &NFS_I(inode)->flags)) { diff --git a/fs/nfs/file.c b/fs/nfs/file.c index 284ca901fe16..c1edf7336315 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -916,10 +916,6 @@ int nfs_flock(struct file *filp, int cmd, struct file_lock *fl) is_local = 1; /* We're simulating flock() locks using posix locks on the server */ - fl->fl_owner = (fl_owner_t)filp; - fl->fl_start = 0; - fl->fl_end = OFFSET_MAX; - if (fl->fl_type == F_UNLCK) return do_unlk(filp, cmd, fl, is_local); return do_setlk(filp, cmd, fl, is_local); diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 0c438973f3c8..e6f7398d2b3c 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -1085,7 +1085,7 @@ int nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping) trace_nfs_invalidate_mapping_exit(inode, ret); clear_bit_unlock(NFS_INO_INVALIDATING, bitlock); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(bitlock, NFS_INO_INVALIDATING); out: return ret; diff --git a/fs/nfs/nfs4filelayoutdev.c b/fs/nfs/nfs4filelayoutdev.c index efac602edb37..b9c61efe9660 100644 --- a/fs/nfs/nfs4filelayoutdev.c +++ b/fs/nfs/nfs4filelayoutdev.c @@ -789,9 +789,9 @@ static void nfs4_wait_ds_connect(struct nfs4_pnfs_ds *ds) static void nfs4_clear_ds_conn_bit(struct nfs4_pnfs_ds *ds) { - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(NFS4DS_CONNECTING, &ds->ds_state); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&ds->ds_state, NFS4DS_CONNECTING); } diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 2349518eef2c..c0583b9bef71 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -1140,9 +1140,9 @@ static int nfs4_run_state_manager(void *); static void nfs4_clear_state_manager_bit(struct nfs_client *clp) { - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&clp->cl_state, NFS4CLNT_MANAGER_RUNNING); rpc_wake_up(&clp->cl_rpcwaitq); } diff --git a/fs/nfs/nfs4sysctl.c b/fs/nfs/nfs4sysctl.c index 2628d921b7e3..b6ebe7e445f6 100644 --- a/fs/nfs/nfs4sysctl.c +++ b/fs/nfs/nfs4sysctl.c @@ -16,7 +16,7 @@ static const int nfs_set_port_min = 0; static const int nfs_set_port_max = 65535; static struct ctl_table_header *nfs4_callback_sysctl_table; -static ctl_table nfs4_cb_sysctls[] = { +static struct ctl_table nfs4_cb_sysctls[] = { { .procname = "nfs_callback_tcpport", .data = &nfs_callback_set_tcpport, @@ -36,7 +36,7 @@ static ctl_table nfs4_cb_sysctls[] = { { } }; -static ctl_table nfs4_cb_sysctl_dir[] = { +static struct ctl_table nfs4_cb_sysctl_dir[] = { { .procname = "nfs", .mode = 0555, @@ -45,7 +45,7 @@ static ctl_table nfs4_cb_sysctl_dir[] = { { } }; -static ctl_table nfs4_cb_sysctl_root[] = { +static struct ctl_table nfs4_cb_sysctl_root[] = { { .procname = "fs", .mode = 0555, diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index 2ffebf2081ce..03ed984ab4d8 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -95,7 +95,7 @@ nfs_iocounter_dec(struct nfs_io_counter *c) { if (atomic_dec_and_test(&c->io_count)) { clear_bit(NFS_IO_INPROGRESS, &c->flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&c->flags, NFS_IO_INPROGRESS); } } @@ -193,9 +193,9 @@ void nfs_unlock_request(struct nfs_page *req) printk(KERN_ERR "NFS: Invalid unlock attempted\n"); BUG(); } - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(PG_BUSY, &req->wb_flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&req->wb_flags, PG_BUSY); } diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index cb53d450ae32..fd9536e494bc 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -1810,7 +1810,7 @@ static void pnfs_clear_layoutcommitting(struct inode *inode) unsigned long *bitlock = &NFS_I(inode)->flags; clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING); } diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h index 023793909778..c3058a076596 100644 --- a/fs/nfs/pnfs.h +++ b/fs/nfs/pnfs.h @@ -275,7 +275,7 @@ pnfs_get_lseg(struct pnfs_layout_segment *lseg) { if (lseg) { atomic_inc(&lseg->pls_refcount); - smp_mb__after_atomic_inc(); + smp_mb__after_atomic(); } return lseg; } diff --git a/fs/nfs/sysctl.c b/fs/nfs/sysctl.c index 6b3f2535a3ec..bb6ed810fa6f 100644 --- a/fs/nfs/sysctl.c +++ b/fs/nfs/sysctl.c @@ -13,7 +13,7 @@ static struct ctl_table_header *nfs_callback_sysctl_table; -static ctl_table nfs_cb_sysctls[] = { +static struct ctl_table nfs_cb_sysctls[] = { { .procname = "nfs_mountpoint_timeout", .data = &nfs_mountpoint_expiry_timeout, @@ -31,7 +31,7 @@ static ctl_table nfs_cb_sysctls[] = { { } }; -static ctl_table nfs_cb_sysctl_dir[] = { +static struct ctl_table nfs_cb_sysctl_dir[] = { { .procname = "nfs", .mode = 0555, @@ -40,7 +40,7 @@ static ctl_table nfs_cb_sysctl_dir[] = { { } }; -static ctl_table nfs_cb_sysctl_root[] = { +static struct ctl_table nfs_cb_sysctl_root[] = { { .procname = "fs", .mode = 0555, diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 9a3b6a4cd6b9..ffb9459f180b 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -405,7 +405,7 @@ int nfs_writepages(struct address_space *mapping, struct writeback_control *wbc) nfs_pageio_complete(&pgio); clear_bit_unlock(NFS_INO_FLUSHING, bitlock); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(bitlock, NFS_INO_FLUSHING); if (err < 0) @@ -1458,7 +1458,7 @@ static int nfs_commit_set_lock(struct nfs_inode *nfsi, int may_wait) static void nfs_commit_clear_lock(struct nfs_inode *nfsi) { clear_bit(NFS_INO_COMMIT, &nfsi->flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_bit(&nfsi->flags, NFS_INO_COMMIT); } diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c index 732648b270dc..3fdc8a3e1134 100644 --- a/fs/notify/fanotify/fanotify_user.c +++ b/fs/notify/fanotify/fanotify_user.c @@ -25,6 +25,19 @@ #define FANOTIFY_DEFAULT_MAX_MARKS 8192 #define FANOTIFY_DEFAULT_MAX_LISTENERS 128 +/* + * All flags that may be specified in parameter event_f_flags of fanotify_init. + * + * Internal and external open flags are stored together in field f_flags of + * struct file. Only external open flags shall be allowed in event_f_flags. + * Internal flags like FMODE_NONOTIFY, FMODE_EXEC, FMODE_NOCMTIME shall be + * excluded. + */ +#define FANOTIFY_INIT_ALL_EVENT_F_BITS ( \ + O_ACCMODE | O_APPEND | O_NONBLOCK | \ + __O_SYNC | O_DSYNC | O_CLOEXEC | \ + O_LARGEFILE | O_NOATIME ) + extern const struct fsnotify_ops fanotify_fsnotify_ops; static struct kmem_cache *fanotify_mark_cache __read_mostly; @@ -669,6 +682,18 @@ SYSCALL_DEFINE2(fanotify_init, unsigned int, flags, unsigned int, event_f_flags) if (flags & ~FAN_ALL_INIT_FLAGS) return -EINVAL; + if (event_f_flags & ~FANOTIFY_INIT_ALL_EVENT_F_BITS) + return -EINVAL; + + switch (event_f_flags & O_ACCMODE) { + case O_RDONLY: + case O_RDWR: + case O_WRONLY: + break; + default: + return -EINVAL; + } + user = get_current_user(); if (atomic_read(&user->fanotify_listeners) > FANOTIFY_DEFAULT_MAX_LISTENERS) { free_uid(user); @@ -776,7 +801,10 @@ SYSCALL_DEFINE5(fanotify_mark, int, fanotify_fd, unsigned int, flags, case FAN_MARK_REMOVE: if (!mask) return -EINVAL; + break; case FAN_MARK_FLUSH: + if (flags & ~(FAN_MARK_MOUNT | FAN_MARK_FLUSH)) + return -EINVAL; break; default: return -EINVAL; @@ -813,6 +841,15 @@ SYSCALL_DEFINE5(fanotify_mark, int, fanotify_fd, unsigned int, flags, group->priority == FS_PRIO_0) goto fput_and_out; + if (flags & FAN_MARK_FLUSH) { + ret = 0; + if (flags & FAN_MARK_MOUNT) + fsnotify_clear_vfsmount_marks_by_group(group); + else + fsnotify_clear_inode_marks_by_group(group); + goto fput_and_out; + } + ret = fanotify_find_path(dfd, pathname, &path, flags); if (ret) goto fput_and_out; @@ -824,7 +861,7 @@ SYSCALL_DEFINE5(fanotify_mark, int, fanotify_fd, unsigned int, flags, mnt = path.mnt; /* create/update an inode mark */ - switch (flags & (FAN_MARK_ADD | FAN_MARK_REMOVE | FAN_MARK_FLUSH)) { + switch (flags & (FAN_MARK_ADD | FAN_MARK_REMOVE)) { case FAN_MARK_ADD: if (flags & FAN_MARK_MOUNT) ret = fanotify_add_vfsmount_mark(group, mnt, mask, flags); @@ -837,12 +874,6 @@ SYSCALL_DEFINE5(fanotify_mark, int, fanotify_fd, unsigned int, flags, else ret = fanotify_remove_inode_mark(group, inode, mask, flags); break; - case FAN_MARK_FLUSH: - if (flags & FAN_MARK_MOUNT) - fsnotify_clear_vfsmount_marks_by_group(group); - else - fsnotify_clear_inode_marks_by_group(group); - break; default: ret = -EINVAL; } diff --git a/fs/notify/inotify/inotify_user.c b/fs/notify/inotify/inotify_user.c index 78a2ca3966c3..cc423a30a0c8 100644 --- a/fs/notify/inotify/inotify_user.c +++ b/fs/notify/inotify/inotify_user.c @@ -57,7 +57,7 @@ static struct kmem_cache *inotify_inode_mark_cachep __read_mostly; static int zero; -ctl_table inotify_table[] = { +struct ctl_table inotify_table[] = { { .procname = "max_user_instances", .data = &inotify_max_user_instances, diff --git a/fs/notify/mark.c b/fs/notify/mark.c index 923fe4a5f503..d90deaa08e78 100644 --- a/fs/notify/mark.c +++ b/fs/notify/mark.c @@ -340,7 +340,7 @@ void fsnotify_init_mark(struct fsnotify_mark *mark, static int fsnotify_mark_destroy(void *ignored) { struct fsnotify_mark *mark, *next; - LIST_HEAD(private_destroy_list); + struct list_head private_destroy_list; for (;;) { spin_lock(&destroy_lock); diff --git a/fs/ntfs/attrib.c b/fs/ntfs/attrib.c index a27e3fecefaf..250ed5b20c8f 100644 --- a/fs/ntfs/attrib.c +++ b/fs/ntfs/attrib.c @@ -1748,7 +1748,6 @@ int ntfs_attr_make_non_resident(ntfs_inode *ni, const u32 data_size) if (page) { set_page_dirty(page); unlock_page(page); - mark_page_accessed(page); page_cache_release(page); } ntfs_debug("Done."); diff --git a/fs/ntfs/compress.c b/fs/ntfs/compress.c index ee4144ce5d7c..f82498c35e78 100644 --- a/fs/ntfs/compress.c +++ b/fs/ntfs/compress.c @@ -58,7 +58,7 @@ typedef enum { /** * ntfs_compression_buffer - one buffer for the decompression engine */ -static u8 *ntfs_compression_buffer = NULL; +static u8 *ntfs_compression_buffer; /** * ntfs_cb_lock - spinlock which protects ntfs_compression_buffer diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c index db9bd8a31725..86ddab916b66 100644 --- a/fs/ntfs/file.c +++ b/fs/ntfs/file.c @@ -2060,7 +2060,6 @@ static ssize_t ntfs_file_buffered_write(struct kiocb *iocb, } do { unlock_page(pages[--do_pages]); - mark_page_accessed(pages[do_pages]); page_cache_release(pages[do_pages]); } while (do_pages); if (unlikely(status)) diff --git a/fs/ntfs/super.c b/fs/ntfs/super.c index 9de2491f2926..6c3296e546c3 100644 --- a/fs/ntfs/super.c +++ b/fs/ntfs/super.c @@ -50,8 +50,8 @@ static unsigned long ntfs_nr_compression_users; /* A global default upcase table and a corresponding reference count. */ -static ntfschar *default_upcase = NULL; -static unsigned long ntfs_nr_upcase_users = 0; +static ntfschar *default_upcase; +static unsigned long ntfs_nr_upcase_users; /* Error constants/strings used in inode.c::ntfs_show_options(). */ typedef enum { diff --git a/fs/ntfs/sysctl.c b/fs/ntfs/sysctl.c index 79a89184cb5e..a503156ec15f 100644 --- a/fs/ntfs/sysctl.c +++ b/fs/ntfs/sysctl.c @@ -34,7 +34,7 @@ #include "debug.h" /* Definition of the ntfs sysctl. */ -static ctl_table ntfs_sysctls[] = { +static struct ctl_table ntfs_sysctls[] = { { .procname = "ntfs-debug", .data = &debug_msgs, /* Data pointer and size. */ @@ -46,7 +46,7 @@ static ctl_table ntfs_sysctls[] = { }; /* Define the parent directory /proc/sys/fs. */ -static ctl_table sysctls_root[] = { +static struct ctl_table sysctls_root[] = { { .procname = "fs", .mode = 0555, @@ -56,7 +56,7 @@ static ctl_table sysctls_root[] = { }; /* Storage for the sysctls header. */ -static struct ctl_table_header *sysctls_root_table = NULL; +static struct ctl_table_header *sysctls_root_table; /** * ntfs_sysctl - add or remove the debug sysctl diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c index b4deb5f750d9..9d8fcf2f3b94 100644 --- a/fs/ocfs2/alloc.c +++ b/fs/ocfs2/alloc.c @@ -6046,7 +6046,8 @@ static void ocfs2_truncate_log_worker(struct work_struct *work) void ocfs2_schedule_truncate_log_flush(struct ocfs2_super *osb, int cancel) { - if (osb->osb_tl_inode) { + if (osb->osb_tl_inode && + atomic_read(&osb->osb_tl_disable) == 0) { /* We want to push off log flushes while truncates are * still running. */ if (cancel) @@ -6223,6 +6224,8 @@ void ocfs2_truncate_log_shutdown(struct ocfs2_super *osb) int status; struct inode *tl_inode = osb->osb_tl_inode; + atomic_set(&osb->osb_tl_disable, 1); + if (tl_inode) { cancel_delayed_work(&osb->osb_truncate_log_wq); flush_workqueue(ocfs2_wq); @@ -6254,6 +6257,7 @@ int ocfs2_truncate_log_init(struct ocfs2_super *osb) * until we're sure all is well. */ INIT_DELAYED_WORK(&osb->osb_truncate_log_wq, ocfs2_truncate_log_worker); + atomic_set(&osb->osb_tl_disable, 0); osb->osb_tl_bh = tl_bh; osb->osb_tl_inode = tl_inode; diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c index bf482dfed14f..73039295d0d1 100644 --- a/fs/ocfs2/cluster/heartbeat.c +++ b/fs/ocfs2/cluster/heartbeat.c @@ -1107,7 +1107,7 @@ static int o2hb_thread(void *data) mlog(ML_HEARTBEAT|ML_KTHREAD, "hb thread running\n"); - set_user_nice(current, -20); + set_user_nice(current, MIN_NICE); /* Pin node */ o2nm_depend_this_node(); diff --git a/fs/ocfs2/cluster/tcp.c b/fs/ocfs2/cluster/tcp.c index c6b90e670389..a68e07a9bd46 100644 --- a/fs/ocfs2/cluster/tcp.c +++ b/fs/ocfs2/cluster/tcp.c @@ -108,7 +108,7 @@ static struct rb_root o2net_handler_tree = RB_ROOT; static struct o2net_node o2net_nodes[O2NM_MAX_NODES]; /* XXX someday we'll need better accounting */ -static struct socket *o2net_listen_sock = NULL; +static struct socket *o2net_listen_sock; /* * listen work is only queued by the listening socket callbacks on the diff --git a/fs/ocfs2/dlm/dlmcommon.h b/fs/ocfs2/dlm/dlmcommon.h index e0517762fcc0..a106b3f2b22a 100644 --- a/fs/ocfs2/dlm/dlmcommon.h +++ b/fs/ocfs2/dlm/dlmcommon.h @@ -108,7 +108,6 @@ static inline int dlm_is_recovery_lock(const char *lock_name, int name_len) struct dlm_recovery_ctxt { struct list_head resources; - struct list_head received; struct list_head node_data; u8 new_master; u8 dead_node; diff --git a/fs/ocfs2/dlm/dlmdebug.c b/fs/ocfs2/dlm/dlmdebug.c index e33cd7a3c582..18f13c2e4a10 100644 --- a/fs/ocfs2/dlm/dlmdebug.c +++ b/fs/ocfs2/dlm/dlmdebug.c @@ -338,7 +338,7 @@ void dlm_print_one_mle(struct dlm_master_list_entry *mle) #ifdef CONFIG_DEBUG_FS -static struct dentry *dlm_debugfs_root = NULL; +static struct dentry *dlm_debugfs_root; #define DLM_DEBUGFS_DIR "o2dlm" #define DLM_DEBUGFS_DLM_STATE "dlm_state" diff --git a/fs/ocfs2/dlm/dlmdomain.c b/fs/ocfs2/dlm/dlmdomain.c index c973690dc0bc..39efc5057a36 100644 --- a/fs/ocfs2/dlm/dlmdomain.c +++ b/fs/ocfs2/dlm/dlmdomain.c @@ -959,6 +959,14 @@ static int dlm_assert_joined_handler(struct o2net_msg *msg, u32 len, void *data, * domain. Set him in the map and clean up our * leftover join state. */ BUG_ON(dlm->joining_node != assert->node_idx); + + if (dlm->reco.state & DLM_RECO_STATE_ACTIVE) { + mlog(0, "dlm recovery is ongoing, disallow join\n"); + spin_unlock(&dlm->spinlock); + spin_unlock(&dlm_domain_lock); + return -EAGAIN; + } + set_bit(assert->node_idx, dlm->domain_map); clear_bit(assert->node_idx, dlm->exit_domain_map); __dlm_set_joining_node(dlm, DLM_LOCK_RES_OWNER_UNKNOWN); @@ -1517,6 +1525,7 @@ static int dlm_send_one_join_assert(struct dlm_ctxt *dlm, unsigned int node) { int status; + int ret; struct dlm_assert_joined assert_msg; mlog(0, "Sending join assert to node %u\n", node); @@ -1528,11 +1537,13 @@ static int dlm_send_one_join_assert(struct dlm_ctxt *dlm, status = o2net_send_message(DLM_ASSERT_JOINED_MSG, DLM_MOD_KEY, &assert_msg, sizeof(assert_msg), node, - NULL); + &ret); if (status < 0) mlog(ML_ERROR, "Error %d when sending message %u (key 0x%x) to " "node %u\n", status, DLM_ASSERT_JOINED_MSG, DLM_MOD_KEY, node); + else + status = ret; return status; } @@ -2023,7 +2034,6 @@ static struct dlm_ctxt *dlm_alloc_ctxt(const char *domain, INIT_LIST_HEAD(&dlm->list); INIT_LIST_HEAD(&dlm->dirty_list); INIT_LIST_HEAD(&dlm->reco.resources); - INIT_LIST_HEAD(&dlm->reco.received); INIT_LIST_HEAD(&dlm->reco.node_data); INIT_LIST_HEAD(&dlm->purge_list); INIT_LIST_HEAD(&dlm->dlm_domain_handlers); diff --git a/fs/ocfs2/dlm/dlmlock.c b/fs/ocfs2/dlm/dlmlock.c index 5d32f7511f74..66c2a491f68d 100644 --- a/fs/ocfs2/dlm/dlmlock.c +++ b/fs/ocfs2/dlm/dlmlock.c @@ -52,7 +52,7 @@ #define MLOG_MASK_PREFIX ML_DLM #include "cluster/masklog.h" -static struct kmem_cache *dlm_lock_cache = NULL; +static struct kmem_cache *dlm_lock_cache; static DEFINE_SPINLOCK(dlm_cookie_lock); static u64 dlm_next_cookie = 1; diff --git a/fs/ocfs2/dlm/dlmmaster.c b/fs/ocfs2/dlm/dlmmaster.c index ee1f88419cb0..3087a21d32f9 100644 --- a/fs/ocfs2/dlm/dlmmaster.c +++ b/fs/ocfs2/dlm/dlmmaster.c @@ -82,9 +82,9 @@ static inline int dlm_mle_equal(struct dlm_ctxt *dlm, return 1; } -static struct kmem_cache *dlm_lockres_cache = NULL; -static struct kmem_cache *dlm_lockname_cache = NULL; -static struct kmem_cache *dlm_mle_cache = NULL; +static struct kmem_cache *dlm_lockres_cache; +static struct kmem_cache *dlm_lockname_cache; +static struct kmem_cache *dlm_mle_cache; static void dlm_mle_release(struct kref *kref); static void dlm_init_mle(struct dlm_master_list_entry *mle, diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c index fe29f7978f81..5de019437ea5 100644 --- a/fs/ocfs2/dlm/dlmrecovery.c +++ b/fs/ocfs2/dlm/dlmrecovery.c @@ -1986,7 +1986,15 @@ skip_lvb: } if (!bad) { dlm_lock_get(newlock); - list_add_tail(&newlock->list, queue); + if (mres->flags & DLM_MRES_RECOVERY && + ml->list == DLM_CONVERTING_LIST && + newlock->ml.type > + newlock->ml.convert_type) { + /* newlock is doing downconvert, add it to the + * head of converting list */ + list_add(&newlock->list, queue); + } else + list_add_tail(&newlock->list, queue); mlog(0, "%s:%.*s: added lock for node %u, " "setting refmap bit\n", dlm->name, res->lockname.len, res->lockname.name, ml->node); diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c index 6bd690b5a061..52cfe99ae056 100644 --- a/fs/ocfs2/dlmglue.c +++ b/fs/ocfs2/dlmglue.c @@ -2544,11 +2544,6 @@ int ocfs2_super_lock(struct ocfs2_super *osb, * refreshed, so we do it here. Of course, making sense of * everything is up to the caller :) */ status = ocfs2_should_refresh_lock_res(lockres); - if (status < 0) { - ocfs2_cluster_unlock(osb, lockres, level); - mlog_errno(status); - goto bail; - } if (status) { status = ocfs2_refresh_slot_info(osb); diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c index 8970dcf74de5..8eb6e5732d3b 100644 --- a/fs/ocfs2/file.c +++ b/fs/ocfs2/file.c @@ -828,7 +828,7 @@ static int ocfs2_write_zero_page(struct inode *inode, u64 abs_from, /* * fs-writeback will release the dirty pages without page lock * whose offset are over inode size, the release happens at - * block_write_full_page_endio(). + * block_write_full_page(). */ i_size_write(inode, abs_to); inode->i_blocks = ocfs2_inode_sector_count(inode); diff --git a/fs/ocfs2/ioctl.c b/fs/ocfs2/ioctl.c index 490229f43731..6f66b3751ace 100644 --- a/fs/ocfs2/ioctl.c +++ b/fs/ocfs2/ioctl.c @@ -143,8 +143,8 @@ bail: return status; } -int ocfs2_info_handle_blocksize(struct inode *inode, - struct ocfs2_info_request __user *req) +static int ocfs2_info_handle_blocksize(struct inode *inode, + struct ocfs2_info_request __user *req) { int status = -EFAULT; struct ocfs2_info_blocksize oib; @@ -167,8 +167,8 @@ bail: return status; } -int ocfs2_info_handle_clustersize(struct inode *inode, - struct ocfs2_info_request __user *req) +static int ocfs2_info_handle_clustersize(struct inode *inode, + struct ocfs2_info_request __user *req) { int status = -EFAULT; struct ocfs2_info_clustersize oic; @@ -192,8 +192,8 @@ bail: return status; } -int ocfs2_info_handle_maxslots(struct inode *inode, - struct ocfs2_info_request __user *req) +static int ocfs2_info_handle_maxslots(struct inode *inode, + struct ocfs2_info_request __user *req) { int status = -EFAULT; struct ocfs2_info_maxslots oim; @@ -217,8 +217,8 @@ bail: return status; } -int ocfs2_info_handle_label(struct inode *inode, - struct ocfs2_info_request __user *req) +static int ocfs2_info_handle_label(struct inode *inode, + struct ocfs2_info_request __user *req) { int status = -EFAULT; struct ocfs2_info_label oil; @@ -242,8 +242,8 @@ bail: return status; } -int ocfs2_info_handle_uuid(struct inode *inode, - struct ocfs2_info_request __user *req) +static int ocfs2_info_handle_uuid(struct inode *inode, + struct ocfs2_info_request __user *req) { int status = -EFAULT; struct ocfs2_info_uuid oiu; @@ -267,8 +267,8 @@ bail: return status; } -int ocfs2_info_handle_fs_features(struct inode *inode, - struct ocfs2_info_request __user *req) +static int ocfs2_info_handle_fs_features(struct inode *inode, + struct ocfs2_info_request __user *req) { int status = -EFAULT; struct ocfs2_info_fs_features oif; @@ -294,8 +294,8 @@ bail: return status; } -int ocfs2_info_handle_journal_size(struct inode *inode, - struct ocfs2_info_request __user *req) +static int ocfs2_info_handle_journal_size(struct inode *inode, + struct ocfs2_info_request __user *req) { int status = -EFAULT; struct ocfs2_info_journal_size oij; @@ -319,9 +319,10 @@ bail: return status; } -int ocfs2_info_scan_inode_alloc(struct ocfs2_super *osb, - struct inode *inode_alloc, u64 blkno, - struct ocfs2_info_freeinode *fi, u32 slot) +static int ocfs2_info_scan_inode_alloc(struct ocfs2_super *osb, + struct inode *inode_alloc, u64 blkno, + struct ocfs2_info_freeinode *fi, + u32 slot) { int status = 0, unlock = 0; @@ -366,8 +367,8 @@ bail: return status; } -int ocfs2_info_handle_freeinode(struct inode *inode, - struct ocfs2_info_request __user *req) +static int ocfs2_info_handle_freeinode(struct inode *inode, + struct ocfs2_info_request __user *req) { u32 i; u64 blkno = -1; @@ -462,19 +463,19 @@ static void o2ffg_update_stats(struct ocfs2_info_freefrag_stats *stats, stats->ffs_free_chunks_real++; } -void ocfs2_info_update_ffg(struct ocfs2_info_freefrag *ffg, - unsigned int chunksize) +static void ocfs2_info_update_ffg(struct ocfs2_info_freefrag *ffg, + unsigned int chunksize) { o2ffg_update_histogram(&(ffg->iff_ffs.ffs_fc_hist), chunksize); o2ffg_update_stats(&(ffg->iff_ffs), chunksize); } -int ocfs2_info_freefrag_scan_chain(struct ocfs2_super *osb, - struct inode *gb_inode, - struct ocfs2_dinode *gb_dinode, - struct ocfs2_chain_rec *rec, - struct ocfs2_info_freefrag *ffg, - u32 chunks_in_group) +static int ocfs2_info_freefrag_scan_chain(struct ocfs2_super *osb, + struct inode *gb_inode, + struct ocfs2_dinode *gb_dinode, + struct ocfs2_chain_rec *rec, + struct ocfs2_info_freefrag *ffg, + u32 chunks_in_group) { int status = 0, used; u64 blkno; @@ -572,9 +573,9 @@ bail: return status; } -int ocfs2_info_freefrag_scan_bitmap(struct ocfs2_super *osb, - struct inode *gb_inode, u64 blkno, - struct ocfs2_info_freefrag *ffg) +static int ocfs2_info_freefrag_scan_bitmap(struct ocfs2_super *osb, + struct inode *gb_inode, u64 blkno, + struct ocfs2_info_freefrag *ffg) { u32 chunks_in_group; int status = 0, unlock = 0, i; @@ -652,8 +653,8 @@ bail: return status; } -int ocfs2_info_handle_freefrag(struct inode *inode, - struct ocfs2_info_request __user *req) +static int ocfs2_info_handle_freefrag(struct inode *inode, + struct ocfs2_info_request __user *req) { u64 blkno = -1; char namebuf[40]; @@ -723,8 +724,8 @@ out_err: return status; } -int ocfs2_info_handle_unknown(struct inode *inode, - struct ocfs2_info_request __user *req) +static int ocfs2_info_handle_unknown(struct inode *inode, + struct ocfs2_info_request __user *req) { int status = -EFAULT; struct ocfs2_info_request oir; @@ -752,8 +753,8 @@ bail: * - distinguish different requests. * - validate size of different requests. */ -int ocfs2_info_handle_request(struct inode *inode, - struct ocfs2_info_request __user *req) +static int ocfs2_info_handle_request(struct inode *inode, + struct ocfs2_info_request __user *req) { int status = -EFAULT; struct ocfs2_info_request oir; @@ -811,8 +812,8 @@ bail: return status; } -int ocfs2_get_request_ptr(struct ocfs2_info *info, int idx, - u64 *req_addr, int compat_flag) +static int ocfs2_get_request_ptr(struct ocfs2_info *info, int idx, + u64 *req_addr, int compat_flag) { int status = -EFAULT; u64 __user *bp = NULL; @@ -849,8 +850,8 @@ bail: * a better backward&forward compatibility, since a small piece of * request will be less likely to be broken if disk layout get changed. */ -int ocfs2_info_handle(struct inode *inode, struct ocfs2_info *info, - int compat_flag) +static int ocfs2_info_handle(struct inode *inode, struct ocfs2_info *info, + int compat_flag) { int i, status = 0; u64 req_addr; diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c index 03ea9314fecd..4b0c68849b36 100644 --- a/fs/ocfs2/journal.c +++ b/fs/ocfs2/journal.c @@ -30,6 +30,7 @@ #include <linux/kthread.h> #include <linux/time.h> #include <linux/random.h> +#include <linux/delay.h> #include <cluster/masklog.h> @@ -2185,8 +2186,20 @@ static int ocfs2_commit_thread(void *arg) || kthread_should_stop()); status = ocfs2_commit_cache(osb); - if (status < 0) - mlog_errno(status); + if (status < 0) { + static unsigned long abort_warn_time; + + /* Warn about this once per minute */ + if (printk_timed_ratelimit(&abort_warn_time, 60*HZ)) + mlog(ML_ERROR, "status = %d, journal is " + "already aborted.\n", status); + /* + * After ocfs2_commit_cache() fails, j_num_trans has a + * non-zero value. Sleep here to avoid a busy-wait + * loop. + */ + msleep_interruptible(1000); + } if (kthread_should_stop() && atomic_read(&journal->j_num_trans)){ mlog(ML_KTHREAD, diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h index 8d64a97a9d5e..bbec539230fd 100644 --- a/fs/ocfs2/ocfs2.h +++ b/fs/ocfs2/ocfs2.h @@ -422,6 +422,7 @@ struct ocfs2_super struct inode *osb_tl_inode; struct buffer_head *osb_tl_bh; struct delayed_work osb_truncate_log_wq; + atomic_t osb_tl_disable; /* * How many clusters in our truncate log. * It must be protected by osb_tl_inode->i_mutex. diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c index 6ba4bcbc4796..714e53b9cc66 100644 --- a/fs/ocfs2/refcounttree.c +++ b/fs/ocfs2/refcounttree.c @@ -1408,10 +1408,9 @@ static void swap_refcount_rec(void *a, void *b, int size) { struct ocfs2_refcount_rec *l = a, *r = b, tmp; - tmp = *(struct ocfs2_refcount_rec *)l; - *(struct ocfs2_refcount_rec *)l = - *(struct ocfs2_refcount_rec *)r; - *(struct ocfs2_refcount_rec *)r = tmp; + tmp = *l; + *l = *r; + *r = tmp; } /* diff --git a/fs/ocfs2/resize.c b/fs/ocfs2/resize.c index 822ebc10f281..d5da6f624142 100644 --- a/fs/ocfs2/resize.c +++ b/fs/ocfs2/resize.c @@ -53,8 +53,6 @@ */ static u16 ocfs2_calc_new_backup_super(struct inode *inode, struct ocfs2_group_desc *gd, - int new_clusters, - u32 first_new_cluster, u16 cl_cpg, int set) { @@ -127,8 +125,6 @@ static int ocfs2_update_last_group_and_inode(handle_t *handle, OCFS2_FEATURE_COMPAT_BACKUP_SB)) { backups = ocfs2_calc_new_backup_super(bm_inode, group, - new_clusters, - first_new_cluster, cl_cpg, 1); le16_add_cpu(&group->bg_free_bits_count, -1 * backups); } @@ -157,7 +153,7 @@ static int ocfs2_update_last_group_and_inode(handle_t *handle, spin_lock(&OCFS2_I(bm_inode)->ip_lock); OCFS2_I(bm_inode)->ip_clusters = le32_to_cpu(fe->i_clusters); - le64_add_cpu(&fe->i_size, new_clusters << osb->s_clustersize_bits); + le64_add_cpu(&fe->i_size, (u64)new_clusters << osb->s_clustersize_bits); spin_unlock(&OCFS2_I(bm_inode)->ip_lock); i_size_write(bm_inode, le64_to_cpu(fe->i_size)); @@ -167,8 +163,6 @@ out_rollback: if (ret < 0) { ocfs2_calc_new_backup_super(bm_inode, group, - new_clusters, - first_new_cluster, cl_cpg, 0); le16_add_cpu(&group->bg_free_bits_count, backups); le16_add_cpu(&group->bg_bits, -1 * num_bits); @@ -569,7 +563,7 @@ int ocfs2_group_add(struct inode *inode, struct ocfs2_new_group_input *input) spin_lock(&OCFS2_I(main_bm_inode)->ip_lock); OCFS2_I(main_bm_inode)->ip_clusters = le32_to_cpu(fe->i_clusters); - le64_add_cpu(&fe->i_size, input->clusters << osb->s_clustersize_bits); + le64_add_cpu(&fe->i_size, (u64)input->clusters << osb->s_clustersize_bits); spin_unlock(&OCFS2_I(main_bm_inode)->ip_lock); i_size_write(main_bm_inode, le64_to_cpu(fe->i_size)); diff --git a/fs/ocfs2/stackglue.c b/fs/ocfs2/stackglue.c index 83f1a665ae97..5d965e83bd43 100644 --- a/fs/ocfs2/stackglue.c +++ b/fs/ocfs2/stackglue.c @@ -709,7 +709,7 @@ static struct ctl_table ocfs2_root_table[] = { { } }; -static struct ctl_table_header *ocfs2_table_header = NULL; +static struct ctl_table_header *ocfs2_table_header; /* diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c index a7cdd56f4c79..c7a89cea5c5d 100644 --- a/fs/ocfs2/super.c +++ b/fs/ocfs2/super.c @@ -75,7 +75,7 @@ #include "buffer_head_io.h" -static struct kmem_cache *ocfs2_inode_cachep = NULL; +static struct kmem_cache *ocfs2_inode_cachep; struct kmem_cache *ocfs2_dquot_cachep; struct kmem_cache *ocfs2_qf_chunk_cachep; @@ -85,7 +85,7 @@ struct kmem_cache *ocfs2_qf_chunk_cachep; * workqueue and schedule on our own. */ struct workqueue_struct *ocfs2_wq = NULL; -static struct dentry *ocfs2_debugfs_root = NULL; +static struct dentry *ocfs2_debugfs_root; MODULE_AUTHOR("Oracle"); MODULE_LICENSE("GPL"); @@ -2292,8 +2292,8 @@ static int ocfs2_initialize_super(struct super_block *sb, goto bail; } - strncpy(osb->vol_label, di->id2.i_super.s_label, 63); - osb->vol_label[63] = '\0'; + strlcpy(osb->vol_label, di->id2.i_super.s_label, + OCFS2_MAX_VOL_LABEL_LEN); osb->root_blkno = le64_to_cpu(di->id2.i_super.s_root_blkno); osb->system_dir_blkno = le64_to_cpu(di->id2.i_super.s_system_dir_blkno); osb->first_cluster_group_blkno = diff --git a/fs/ocfs2/uptodate.c b/fs/ocfs2/uptodate.c index 52eaf33d346f..82e17b076ce7 100644 --- a/fs/ocfs2/uptodate.c +++ b/fs/ocfs2/uptodate.c @@ -67,7 +67,7 @@ struct ocfs2_meta_cache_item { sector_t c_block; }; -static struct kmem_cache *ocfs2_uptodate_cachep = NULL; +static struct kmem_cache *ocfs2_uptodate_cachep; u64 ocfs2_metadata_cache_owner(struct ocfs2_caching_info *ci) { diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index c4b2646b6d7c..cfa63ee92c96 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -300,6 +300,12 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid) goto done; } + if (vma->vm_ops && vma->vm_ops->name) { + name = vma->vm_ops->name(vma); + if (name) + goto done; + } + name = arch_vma_name(vma); if (!name) { pid_t tid; @@ -737,9 +743,6 @@ static inline void clear_soft_dirty(struct vm_area_struct *vma, ptent = pte_file_clear_soft_dirty(ptent); } - if (vma->vm_flags & VM_SOFTDIRTY) - vma->vm_flags &= ~VM_SOFTDIRTY; - set_pte_at(vma->vm_mm, addr, pte, ptent); #endif } @@ -807,8 +810,9 @@ static ssize_t clear_refs_write(struct file *file, const char __user *buf, if (type == CLEAR_REFS_SOFT_DIRTY) { soft_dirty_cleared = true; - pr_warn_once("The pagemap bits 55-60 has changed their meaning! " - "See the linux/Documentation/vm/pagemap.txt for details.\n"); + pr_warn_once("The pagemap bits 55-60 has changed their meaning!" + " See the linux/Documentation/vm/pagemap.txt for " + "details.\n"); } task = get_proc_task(file_inode(file)); @@ -839,11 +843,17 @@ static ssize_t clear_refs_write(struct file *file, const char __user *buf, * * Writing 3 to /proc/pid/clear_refs only affects file * mapped pages. + * + * Writing 4 to /proc/pid/clear_refs affects all pages. */ if (type == CLEAR_REFS_ANON && vma->vm_file) continue; if (type == CLEAR_REFS_MAPPED && !vma->vm_file) continue; + if (type == CLEAR_REFS_SOFT_DIRTY) { + if (vma->vm_flags & VM_SOFTDIRTY) + vma->vm_flags &= ~VM_SOFTDIRTY; + } walk_page_range(vma->vm_start, vma->vm_end, &clear_refs_walk); } @@ -1408,10 +1418,10 @@ static int show_numa_map(struct seq_file *m, void *v, int is_pid) seq_printf(m, "%08lx %s", vma->vm_start, buffer); if (file) { - seq_printf(m, " file="); + seq_puts(m, " file="); seq_path(m, &file->f_path, "\n\t= "); } else if (vma->vm_start <= mm->brk && vma->vm_end >= mm->start_brk) { - seq_printf(m, " heap"); + seq_puts(m, " heap"); } else { pid_t tid = vm_is_stack(task, vma, is_pid); if (tid != 0) { @@ -1421,14 +1431,14 @@ static int show_numa_map(struct seq_file *m, void *v, int is_pid) */ if (!is_pid || (vma->vm_start <= mm->start_stack && vma->vm_end >= mm->start_stack)) - seq_printf(m, " stack"); + seq_puts(m, " stack"); else seq_printf(m, " stack:%d", tid); } } if (is_vm_hugetlb_page(vma)) - seq_printf(m, " huge"); + seq_puts(m, " huge"); walk_page_range(vma->vm_start, vma->vm_end, &walk); diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c index 6a8e785b29da..382aa890e228 100644 --- a/fs/proc/vmcore.c +++ b/fs/proc/vmcore.c @@ -42,7 +42,7 @@ static size_t elfnotes_sz; /* Total size of vmcore file. */ static u64 vmcore_size; -static struct proc_dir_entry *proc_vmcore = NULL; +static struct proc_dir_entry *proc_vmcore; /* * Returns > 0 for RAM pages, 0 for non-RAM pages, < 0 on error diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c index 46d269e38706..0a9b72cdfeca 100644 --- a/fs/pstore/platform.c +++ b/fs/pstore/platform.c @@ -18,6 +18,8 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ +#define pr_fmt(fmt) "pstore: " fmt + #include <linux/atomic.h> #include <linux/types.h> #include <linux/errno.h> @@ -224,14 +226,12 @@ static void allocate_buf_for_compression(void) zlib_inflate_workspacesize()); stream.workspace = kmalloc(size, GFP_KERNEL); if (!stream.workspace) { - pr_err("pstore: No memory for compression workspace; " - "skipping compression\n"); + pr_err("No memory for compression workspace; skipping compression\n"); kfree(big_oops_buf); big_oops_buf = NULL; } } else { - pr_err("No memory for uncompressed data; " - "skipping compression\n"); + pr_err("No memory for uncompressed data; skipping compression\n"); stream.workspace = NULL; } @@ -455,8 +455,7 @@ int pstore_register(struct pstore_info *psi) add_timer(&pstore_timer); } - pr_info("pstore: Registered %s as persistent store backend\n", - psi->name); + pr_info("Registered %s as persistent store backend\n", psi->name); return 0; } @@ -502,8 +501,8 @@ void pstore_get_records(int quiet) size = unzipped_len; compressed = false; } else { - pr_err("pstore: decompression failed;" - "returned %d\n", unzipped_len); + pr_err("decompression failed;returned %d\n", + unzipped_len); compressed = true; } } @@ -524,8 +523,8 @@ out: mutex_unlock(&psi->read_mutex); if (failed) - printk(KERN_WARNING "pstore: failed to load %d record(s) from '%s'\n", - failed, psi->name); + pr_warn("failed to load %d record(s) from '%s'\n", + failed, psi->name); } static void pstore_dowork(struct work_struct *work) diff --git a/fs/pstore/ram_core.c b/fs/pstore/ram_core.c index ff7e3d4df5a1..34a1e5aa848c 100644 --- a/fs/pstore/ram_core.c +++ b/fs/pstore/ram_core.c @@ -12,6 +12,8 @@ * */ +#define pr_fmt(fmt) "persistent_ram: " fmt + #include <linux/device.h> #include <linux/err.h> #include <linux/errno.h> @@ -205,12 +207,10 @@ static void persistent_ram_ecc_old(struct persistent_ram_zone *prz) size = buffer->data + prz->buffer_size - block; numerr = persistent_ram_decode_rs8(prz, block, size, par); if (numerr > 0) { - pr_devel("persistent_ram: error in block %p, %d\n", - block, numerr); + pr_devel("error in block %p, %d\n", block, numerr); prz->corrected_bytes += numerr; } else if (numerr < 0) { - pr_devel("persistent_ram: uncorrectable error in block %p\n", - block); + pr_devel("uncorrectable error in block %p\n", block); prz->bad_blocks++; } block += prz->ecc_info.block_size; @@ -257,7 +257,7 @@ static int persistent_ram_init_ecc(struct persistent_ram_zone *prz, prz->rs_decoder = init_rs(prz->ecc_info.symsize, prz->ecc_info.poly, 0, 1, prz->ecc_info.ecc_size); if (prz->rs_decoder == NULL) { - pr_info("persistent_ram: init_rs failed\n"); + pr_info("init_rs failed\n"); return -EINVAL; } @@ -267,10 +267,10 @@ static int persistent_ram_init_ecc(struct persistent_ram_zone *prz, numerr = persistent_ram_decode_rs8(prz, buffer, sizeof(*buffer), prz->par_header); if (numerr > 0) { - pr_info("persistent_ram: error in header, %d\n", numerr); + pr_info("error in header, %d\n", numerr); prz->corrected_bytes += numerr; } else if (numerr < 0) { - pr_info("persistent_ram: uncorrectable error in header\n"); + pr_info("uncorrectable error in header\n"); prz->bad_blocks++; } @@ -317,7 +317,7 @@ void persistent_ram_save_old(struct persistent_ram_zone *prz) prz->old_log = kmalloc(size, GFP_KERNEL); } if (!prz->old_log) { - pr_err("persistent_ram: failed to allocate buffer\n"); + pr_err("failed to allocate buffer\n"); return; } @@ -396,8 +396,8 @@ static void *persistent_ram_vmap(phys_addr_t start, size_t size) pages = kmalloc(sizeof(struct page *) * page_count, GFP_KERNEL); if (!pages) { - pr_err("%s: Failed to allocate array for %u pages\n", __func__, - page_count); + pr_err("%s: Failed to allocate array for %u pages\n", + __func__, page_count); return NULL; } @@ -462,19 +462,17 @@ static int persistent_ram_post_init(struct persistent_ram_zone *prz, u32 sig, if (prz->buffer->sig == sig) { if (buffer_size(prz) > prz->buffer_size || buffer_start(prz) > buffer_size(prz)) - pr_info("persistent_ram: found existing invalid buffer," - " size %zu, start %zu\n", - buffer_size(prz), buffer_start(prz)); + pr_info("found existing invalid buffer, size %zu, start %zu\n", + buffer_size(prz), buffer_start(prz)); else { - pr_debug("persistent_ram: found existing buffer," - " size %zu, start %zu\n", - buffer_size(prz), buffer_start(prz)); + pr_debug("found existing buffer, size %zu, start %zu\n", + buffer_size(prz), buffer_start(prz)); persistent_ram_save_old(prz); return 0; } } else { - pr_debug("persistent_ram: no valid data in buffer" - " (sig = 0x%08x)\n", prz->buffer->sig); + pr_debug("no valid data in buffer (sig = 0x%08x)\n", + prz->buffer->sig); } prz->buffer->sig = sig; @@ -509,7 +507,7 @@ struct persistent_ram_zone *persistent_ram_new(phys_addr_t start, size_t size, prz = kzalloc(sizeof(struct persistent_ram_zone), GFP_KERNEL); if (!prz) { - pr_err("persistent_ram: failed to allocate persistent ram zone\n"); + pr_err("failed to allocate persistent ram zone\n"); goto err; } diff --git a/fs/readdir.c b/fs/readdir.c index 5b53d995cae6..33fd92208cb7 100644 --- a/fs/readdir.c +++ b/fs/readdir.c @@ -13,6 +13,7 @@ #include <linux/stat.h> #include <linux/file.h> #include <linux/fs.h> +#include <linux/fsnotify.h> #include <linux/dirent.h> #include <linux/security.h> #include <linux/syscalls.h> @@ -40,6 +41,7 @@ int iterate_dir(struct file *file, struct dir_context *ctx) ctx->pos = file->f_pos; res = file->f_op->iterate(file, ctx); file->f_pos = ctx->pos; + fsnotify_access(file); file_accessed(file); } mutex_unlock(&inode->i_mutex); diff --git a/fs/reiserfs/bitmap.c b/fs/reiserfs/bitmap.c index dc9a6829f7c6..1bcffeab713c 100644 --- a/fs/reiserfs/bitmap.c +++ b/fs/reiserfs/bitmap.c @@ -142,7 +142,6 @@ static int scan_bitmap_block(struct reiserfs_transaction_handle *th, int org = *beg; BUG_ON(!th->t_trans_id); - RFALSE(bmap_n >= reiserfs_bmap_count(s), "Bitmap %u is out of " "range (0..%u)", bmap_n, reiserfs_bmap_count(s) - 1); PROC_INFO_INC(s, scan_bitmap.bmap); @@ -321,7 +320,6 @@ static int scan_bitmap(struct reiserfs_transaction_handle *th, unsigned int off_max = s->s_blocksize << 3; BUG_ON(!th->t_trans_id); - PROC_INFO_INC(s, scan_bitmap.call); if (SB_FREE_BLOCKS(s) <= 0) return 0; // No point in looking for more free blocks @@ -388,9 +386,7 @@ static void _reiserfs_free_block(struct reiserfs_transaction_handle *th, unsigned int nr, offset; BUG_ON(!th->t_trans_id); - PROC_INFO_INC(s, free_block); - rs = SB_DISK_SUPER_BLOCK(s); sbh = SB_BUFFER_WITH_SB(s); apbi = SB_AP_BITMAP(s); @@ -435,8 +431,8 @@ void reiserfs_free_block(struct reiserfs_transaction_handle *th, int for_unformatted) { struct super_block *s = th->t_super; - BUG_ON(!th->t_trans_id); + BUG_ON(!th->t_trans_id); RFALSE(!s, "vs-4061: trying to free block on nonexistent device"); if (!is_reusable(s, block, 1)) return; @@ -471,6 +467,7 @@ static void __discard_prealloc(struct reiserfs_transaction_handle *th, unsigned long save = ei->i_prealloc_block; int dirty = 0; struct inode *inode = &ei->vfs_inode; + BUG_ON(!th->t_trans_id); #ifdef CONFIG_REISERFS_CHECK if (ei->i_prealloc_count < 0) @@ -494,6 +491,7 @@ void reiserfs_discard_prealloc(struct reiserfs_transaction_handle *th, struct inode *inode) { struct reiserfs_inode_info *ei = REISERFS_I(inode); + BUG_ON(!th->t_trans_id); if (ei->i_prealloc_count) __discard_prealloc(th, ei); @@ -504,7 +502,6 @@ void reiserfs_discard_all_prealloc(struct reiserfs_transaction_handle *th) struct list_head *plist = &SB_JOURNAL(th->t_super)->j_prealloc_list; BUG_ON(!th->t_trans_id); - while (!list_empty(plist)) { struct reiserfs_inode_info *ei; ei = list_entry(plist->next, struct reiserfs_inode_info, @@ -562,7 +559,7 @@ int reiserfs_parse_alloc_options(struct super_block *s, char *options) if (!strcmp(this_char, "displacing_new_packing_localities")) { SET_OPTION(displacing_new_packing_localities); continue; - }; + } if (!strcmp(this_char, "old_hashed_relocation")) { SET_OPTION(old_hashed_relocation); @@ -729,6 +726,7 @@ void show_alloc_options(struct seq_file *seq, struct super_block *s) static inline void new_hashed_relocation(reiserfs_blocknr_hint_t * hint) { char *hash_in; + if (hint->formatted_node) { hash_in = (char *)&hint->key.k_dir_id; } else { @@ -757,6 +755,7 @@ static void dirid_groups(reiserfs_blocknr_hint_t * hint) __u32 dirid = 0; int bm = 0; struct super_block *sb = hint->th->t_super; + if (hint->inode) dirid = le32_to_cpu(INODE_PKEY(hint->inode)->k_dir_id); else if (hint->formatted_node) diff --git a/fs/reiserfs/stree.c b/fs/reiserfs/stree.c index b14706a05d52..615cd9ab7940 100644 --- a/fs/reiserfs/stree.c +++ b/fs/reiserfs/stree.c @@ -228,10 +228,10 @@ const struct reiserfs_key MIN_KEY = { 0, 0, {{0, 0},} }; /* Maximal possible key. It is never in the tree. */ static const struct reiserfs_key MAX_KEY = { - __constant_cpu_to_le32(0xffffffff), - __constant_cpu_to_le32(0xffffffff), - {{__constant_cpu_to_le32(0xffffffff), - __constant_cpu_to_le32(0xffffffff)},} + cpu_to_le32(0xffffffff), + cpu_to_le32(0xffffffff), + {{cpu_to_le32(0xffffffff), + cpu_to_le32(0xffffffff)},} }; /* Get delimiting key of the buffer by looking for it in the buffers in the path, starting from the bottom diff --git a/fs/squashfs/squashfs.h b/fs/squashfs/squashfs.h index 9e1bb79f7e6f..887d6d270080 100644 --- a/fs/squashfs/squashfs.h +++ b/fs/squashfs/squashfs.h @@ -25,7 +25,7 @@ #define ERROR(s, args...) pr_err("SQUASHFS error: "s, ## args) -#define WARNING(s, args...) pr_warning("SQUASHFS: "s, ## args) +#define WARNING(s, args...) pr_warn("SQUASHFS: "s, ## args) /* block.c */ extern int squashfs_read_data(struct super_block *, u64, int, u64 *, diff --git a/fs/super.c b/fs/super.c index 48377f7463c0..d20d5b11dedf 100644 --- a/fs/super.c +++ b/fs/super.c @@ -112,9 +112,14 @@ static unsigned long super_cache_count(struct shrinker *shrink, sb = container_of(shrink, struct super_block, s_shrink); - if (!grab_super_passive(sb)) - return 0; - + /* + * Don't call grab_super_passive as it is a potential + * scalability bottleneck. The counts could get updated + * between super_cache_count and super_cache_scan anyway. + * Call to super_cache_count with shrinker_rwsem held + * ensures the safety of call to list_lru_count_node() and + * s_op->nr_cached_objects(). + */ if (sb->s_op && sb->s_op->nr_cached_objects) total_objects = sb->s_op->nr_cached_objects(sb, sc->nid); @@ -125,7 +130,6 @@ static unsigned long super_cache_count(struct shrinker *shrink, sc->nid); total_objects = vfs_pressure_ratio(total_objects); - drop_super(sb); return total_objects; } @@ -276,10 +280,8 @@ void deactivate_locked_super(struct super_block *s) struct file_system_type *fs = s->s_type; if (atomic_dec_and_test(&s->s_active)) { cleancache_invalidate_fs(s); - fs->kill_sb(s); - - /* caches are now gone, we can safely kill the shrinker now */ unregister_shrinker(&s->s_shrink); + fs->kill_sb(s); put_filesystem(fs); put_super(s); diff --git a/fs/sysfs/group.c b/fs/sysfs/group.c index aa0406895b53..7d2a860ba788 100644 --- a/fs/sysfs/group.c +++ b/fs/sysfs/group.c @@ -18,7 +18,7 @@ #include "sysfs.h" -static void remove_files(struct kernfs_node *parent, struct kobject *kobj, +static void remove_files(struct kernfs_node *parent, const struct attribute_group *grp) { struct attribute *const *attr; @@ -29,7 +29,7 @@ static void remove_files(struct kernfs_node *parent, struct kobject *kobj, kernfs_remove_by_name(parent, (*attr)->name); if (grp->bin_attrs) for (bin_attr = grp->bin_attrs; *bin_attr; bin_attr++) - sysfs_remove_bin_file(kobj, *bin_attr); + kernfs_remove_by_name(parent, (*bin_attr)->attr.name); } static int create_files(struct kernfs_node *parent, struct kobject *kobj, @@ -62,7 +62,7 @@ static int create_files(struct kernfs_node *parent, struct kobject *kobj, break; } if (error) { - remove_files(parent, kobj, grp); + remove_files(parent, grp); goto exit; } } @@ -79,7 +79,7 @@ static int create_files(struct kernfs_node *parent, struct kobject *kobj, break; } if (error) - remove_files(parent, kobj, grp); + remove_files(parent, grp); } exit: return error; @@ -224,7 +224,7 @@ void sysfs_remove_group(struct kobject *kobj, kernfs_get(kn); } - remove_files(kn, kobj, grp); + remove_files(kn, grp); if (grp->name) kernfs_remove(kn); diff --git a/fs/ubifs/lpt_commit.c b/fs/ubifs/lpt_commit.c index 4b826abb1528..45d4e96a6bac 100644 --- a/fs/ubifs/lpt_commit.c +++ b/fs/ubifs/lpt_commit.c @@ -460,9 +460,9 @@ static int write_cnodes(struct ubifs_info *c) * important. */ clear_bit(DIRTY_CNODE, &cnode->flags); - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(COW_CNODE, &cnode->flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); offs += len; dbg_chk_lpt_sz(c, 1, len); cnode = cnode->cnext; diff --git a/fs/ubifs/tnc_commit.c b/fs/ubifs/tnc_commit.c index 52a6559275c4..3600994f8411 100644 --- a/fs/ubifs/tnc_commit.c +++ b/fs/ubifs/tnc_commit.c @@ -895,9 +895,9 @@ static int write_index(struct ubifs_info *c) * the reason for the second barrier. */ clear_bit(DIRTY_ZNODE, &znode->flags); - smp_mb__before_clear_bit(); + smp_mb__before_atomic(); clear_bit(COW_ZNODE, &znode->flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); /* * We have marked the znode as clean but have not updated the diff --git a/fs/ufs/balloc.c b/fs/ufs/balloc.c index 0ab1de4b39a5..7bc20809c99e 100644 --- a/fs/ufs/balloc.c +++ b/fs/ufs/balloc.c @@ -24,7 +24,7 @@ #define INVBLOCK ((u64)-1L) -static u64 ufs_add_fragments(struct inode *, u64, unsigned, unsigned, int *); +static u64 ufs_add_fragments(struct inode *, u64, unsigned, unsigned); static u64 ufs_alloc_fragments(struct inode *, unsigned, u64, unsigned, int *); static u64 ufs_alloccg_block(struct inode *, struct ufs_cg_private_info *, u64, int *); static u64 ufs_bitmap_search (struct super_block *, struct ufs_cg_private_info *, u64, unsigned); @@ -52,7 +52,7 @@ void ufs_free_fragments(struct inode *inode, u64 fragment, unsigned count) if (ufs_fragnum(fragment) + count > uspi->s_fpg) ufs_error (sb, "ufs_free_fragments", "internal error"); - mutex_lock(&UFS_SB(sb)->s_lock); + lock_ufs(sb); cgno = ufs_dtog(uspi, fragment); bit = ufs_dtogd(uspi, fragment); @@ -116,12 +116,12 @@ void ufs_free_fragments(struct inode *inode, u64 fragment, unsigned count) ubh_sync_block(UCPI_UBH(ucpi)); ufs_mark_sb_dirty(sb); - mutex_unlock(&UFS_SB(sb)->s_lock); + unlock_ufs(sb); UFSD("EXIT\n"); return; failed: - mutex_unlock(&UFS_SB(sb)->s_lock); + unlock_ufs(sb); UFSD("EXIT (FAILED)\n"); return; } @@ -151,7 +151,7 @@ void ufs_free_blocks(struct inode *inode, u64 fragment, unsigned count) goto failed; } - mutex_lock(&UFS_SB(sb)->s_lock); + lock_ufs(sb); do_more: overflow = 0; @@ -211,12 +211,12 @@ do_more: } ufs_mark_sb_dirty(sb); - mutex_unlock(&UFS_SB(sb)->s_lock); + unlock_ufs(sb); UFSD("EXIT\n"); return; failed_unlock: - mutex_unlock(&UFS_SB(sb)->s_lock); + unlock_ufs(sb); failed: UFSD("EXIT (FAILED)\n"); return; @@ -357,7 +357,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment, usb1 = ubh_get_usb_first(uspi); *err = -ENOSPC; - mutex_lock(&UFS_SB(sb)->s_lock); + lock_ufs(sb); tmp = ufs_data_ptr_to_cpu(sb, p); if (count + ufs_fragnum(fragment) > uspi->s_fpb) { @@ -378,19 +378,19 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment, "fragment %llu, tmp %llu\n", (unsigned long long)fragment, (unsigned long long)tmp); - mutex_unlock(&UFS_SB(sb)->s_lock); + unlock_ufs(sb); return INVBLOCK; } if (fragment < UFS_I(inode)->i_lastfrag) { UFSD("EXIT (ALREADY ALLOCATED)\n"); - mutex_unlock(&UFS_SB(sb)->s_lock); + unlock_ufs(sb); return 0; } } else { if (tmp) { UFSD("EXIT (ALREADY ALLOCATED)\n"); - mutex_unlock(&UFS_SB(sb)->s_lock); + unlock_ufs(sb); return 0; } } @@ -399,7 +399,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment, * There is not enough space for user on the device */ if (!capable(CAP_SYS_RESOURCE) && ufs_freespace(uspi, UFS_MINFREE) <= 0) { - mutex_unlock(&UFS_SB(sb)->s_lock); + unlock_ufs(sb); UFSD("EXIT (FAILED)\n"); return 0; } @@ -424,7 +424,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment, ufs_clear_frags(inode, result + oldcount, newcount - oldcount, locked_page != NULL); } - mutex_unlock(&UFS_SB(sb)->s_lock); + unlock_ufs(sb); UFSD("EXIT, result %llu\n", (unsigned long long)result); return result; } @@ -432,14 +432,14 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment, /* * resize block */ - result = ufs_add_fragments (inode, tmp, oldcount, newcount, err); + result = ufs_add_fragments(inode, tmp, oldcount, newcount); if (result) { *err = 0; UFS_I(inode)->i_lastfrag = max(UFS_I(inode)->i_lastfrag, fragment + count); ufs_clear_frags(inode, result + oldcount, newcount - oldcount, locked_page != NULL); - mutex_unlock(&UFS_SB(sb)->s_lock); + unlock_ufs(sb); UFSD("EXIT, result %llu\n", (unsigned long long)result); return result; } @@ -477,7 +477,7 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment, *err = 0; UFS_I(inode)->i_lastfrag = max(UFS_I(inode)->i_lastfrag, fragment + count); - mutex_unlock(&UFS_SB(sb)->s_lock); + unlock_ufs(sb); if (newcount < request) ufs_free_fragments (inode, result + newcount, request - newcount); ufs_free_fragments (inode, tmp, oldcount); @@ -485,13 +485,13 @@ u64 ufs_new_fragments(struct inode *inode, void *p, u64 fragment, return result; } - mutex_unlock(&UFS_SB(sb)->s_lock); + unlock_ufs(sb); UFSD("EXIT (FAILED)\n"); return 0; } static u64 ufs_add_fragments(struct inode *inode, u64 fragment, - unsigned oldcount, unsigned newcount, int *err) + unsigned oldcount, unsigned newcount) { struct super_block * sb; struct ufs_sb_private_info * uspi; diff --git a/fs/ufs/ialloc.c b/fs/ufs/ialloc.c index 98f7211599ff..a9cc75ffa925 100644 --- a/fs/ufs/ialloc.c +++ b/fs/ufs/ialloc.c @@ -69,11 +69,11 @@ void ufs_free_inode (struct inode * inode) ino = inode->i_ino; - mutex_lock(&UFS_SB(sb)->s_lock); + lock_ufs(sb); if (!((ino > 1) && (ino < (uspi->s_ncg * uspi->s_ipg )))) { ufs_warning(sb, "ufs_free_inode", "reserved inode or nonexistent inode %u\n", ino); - mutex_unlock(&UFS_SB(sb)->s_lock); + unlock_ufs(sb); return; } @@ -81,7 +81,7 @@ void ufs_free_inode (struct inode * inode) bit = ufs_inotocgoff (ino); ucpi = ufs_load_cylinder (sb, cg); if (!ucpi) { - mutex_unlock(&UFS_SB(sb)->s_lock); + unlock_ufs(sb); return; } ucg = ubh_get_ucg(UCPI_UBH(ucpi)); @@ -115,7 +115,7 @@ void ufs_free_inode (struct inode * inode) ubh_sync_block(UCPI_UBH(ucpi)); ufs_mark_sb_dirty(sb); - mutex_unlock(&UFS_SB(sb)->s_lock); + unlock_ufs(sb); UFSD("EXIT\n"); } @@ -193,7 +193,7 @@ struct inode *ufs_new_inode(struct inode *dir, umode_t mode) sbi = UFS_SB(sb); uspi = sbi->s_uspi; - mutex_lock(&sbi->s_lock); + lock_ufs(sb); /* * Try to place the inode in its parent directory @@ -328,21 +328,20 @@ cg_found: sync_dirty_buffer(bh); brelse(bh); } - - mutex_unlock(&sbi->s_lock); + unlock_ufs(sb); UFSD("allocating inode %lu\n", inode->i_ino); UFSD("EXIT\n"); return inode; fail_remove_inode: - mutex_unlock(&sbi->s_lock); + unlock_ufs(sb); clear_nlink(inode); iput(inode); UFSD("EXIT (FAILED): err %d\n", err); return ERR_PTR(err); failed: - mutex_unlock(&sbi->s_lock); + unlock_ufs(sb); make_bad_inode(inode); iput (inode); UFSD("EXIT (FAILED): err %d\n", err); diff --git a/fs/ufs/super.c b/fs/ufs/super.c index c1183f9f69dc..b879f1ba3439 100644 --- a/fs/ufs/super.c +++ b/fs/ufs/super.c @@ -697,7 +697,6 @@ static int ufs_sync_fs(struct super_block *sb, int wait) unsigned flags; lock_ufs(sb); - mutex_lock(&UFS_SB(sb)->s_lock); UFSD("ENTER\n"); @@ -715,7 +714,6 @@ static int ufs_sync_fs(struct super_block *sb, int wait) ufs_put_cstotal(sb); UFSD("EXIT\n"); - mutex_unlock(&UFS_SB(sb)->s_lock); unlock_ufs(sb); return 0; @@ -760,6 +758,7 @@ static void ufs_put_super(struct super_block *sb) ubh_brelse_uspi (sbi->s_uspi); kfree (sbi->s_uspi); + mutex_destroy(&sbi->mutex); kfree (sbi); sb->s_fs_info = NULL; UFSD("EXIT\n"); @@ -786,6 +785,14 @@ static int ufs_fill_super(struct super_block *sb, void *data, int silent) flags = 0; UFSD("ENTER\n"); + +#ifndef CONFIG_UFS_FS_WRITE + if (!(sb->s_flags & MS_RDONLY)) { + printk("ufs was compiled with read-only support, " + "can't be mounted as read-write\n"); + return -EROFS; + } +#endif sbi = kzalloc(sizeof(struct ufs_sb_info), GFP_KERNEL); if (!sbi) @@ -795,15 +802,7 @@ static int ufs_fill_super(struct super_block *sb, void *data, int silent) UFSD("flag %u\n", (int)(sb->s_flags & MS_RDONLY)); -#ifndef CONFIG_UFS_FS_WRITE - if (!(sb->s_flags & MS_RDONLY)) { - printk("ufs was compiled with read-only support, " - "can't be mounted as read-write\n"); - goto failed; - } -#endif mutex_init(&sbi->mutex); - mutex_init(&sbi->s_lock); spin_lock_init(&sbi->work_lock); INIT_DELAYED_WORK(&sbi->sync_work, delayed_sync_fs); /* @@ -1257,6 +1256,7 @@ magic_found: return 0; failed: + mutex_destroy(&sbi->mutex); if (ubh) ubh_brelse_uspi (uspi); kfree (uspi); @@ -1280,7 +1280,6 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data) sync_filesystem(sb); lock_ufs(sb); - mutex_lock(&UFS_SB(sb)->s_lock); uspi = UFS_SB(sb)->s_uspi; flags = UFS_SB(sb)->s_flags; usb1 = ubh_get_usb_first(uspi); @@ -1294,7 +1293,6 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data) new_mount_opt = 0; ufs_set_opt (new_mount_opt, ONERROR_LOCK); if (!ufs_parse_options (data, &new_mount_opt)) { - mutex_unlock(&UFS_SB(sb)->s_lock); unlock_ufs(sb); return -EINVAL; } @@ -1302,14 +1300,12 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data) new_mount_opt |= ufstype; } else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) { printk("ufstype can't be changed during remount\n"); - mutex_unlock(&UFS_SB(sb)->s_lock); unlock_ufs(sb); return -EINVAL; } if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) { UFS_SB(sb)->s_mount_opt = new_mount_opt; - mutex_unlock(&UFS_SB(sb)->s_lock); unlock_ufs(sb); return 0; } @@ -1334,7 +1330,6 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data) #ifndef CONFIG_UFS_FS_WRITE printk("ufs was compiled with read-only support, " "can't be mounted as read-write\n"); - mutex_unlock(&UFS_SB(sb)->s_lock); unlock_ufs(sb); return -EINVAL; #else @@ -1344,13 +1339,11 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data) ufstype != UFS_MOUNT_UFSTYPE_SUNx86 && ufstype != UFS_MOUNT_UFSTYPE_UFS2) { printk("this ufstype is read-only supported\n"); - mutex_unlock(&UFS_SB(sb)->s_lock); unlock_ufs(sb); return -EINVAL; } if (!ufs_read_cylinder_structures(sb)) { printk("failed during remounting\n"); - mutex_unlock(&UFS_SB(sb)->s_lock); unlock_ufs(sb); return -EPERM; } @@ -1358,7 +1351,6 @@ static int ufs_remount (struct super_block *sb, int *mount_flags, char *data) #endif } UFS_SB(sb)->s_mount_opt = new_mount_opt; - mutex_unlock(&UFS_SB(sb)->s_lock); unlock_ufs(sb); return 0; } diff --git a/fs/ufs/ufs.h b/fs/ufs/ufs.h index ff2c15ab81aa..343e6fc571e5 100644 --- a/fs/ufs/ufs.h +++ b/fs/ufs/ufs.h @@ -24,7 +24,6 @@ struct ufs_sb_info { int work_queued; /* non-zero if the delayed work is queued */ struct delayed_work sync_work; /* FS sync delayed work */ spinlock_t work_lock; /* protects sync_work and work_queued */ - struct mutex s_lock; }; struct ufs_inode_info { |