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-rw-r--r--fs/aio.c8
-rw-r--r--fs/bio.c2
-rw-r--r--fs/buffer.c4
-rw-r--r--fs/dquot.c2
-rw-r--r--fs/ecryptfs/dentry.c2
-rw-r--r--fs/ext3/acl.c8
-rw-r--r--fs/ext3/resize.c4
-rw-r--r--fs/ext3/xattr.c4
-rw-r--r--fs/fs-writeback.c6
-rw-r--r--fs/hfs/brec.c18
-rw-r--r--fs/isofs/compress.c11
-rw-r--r--fs/jbd/journal.c5
-rw-r--r--fs/jbd/recovery.c2
-rw-r--r--fs/jbd/transaction.c8
-rw-r--r--fs/jbd2/recovery.c2
-rw-r--r--fs/locks.c4
-rw-r--r--fs/namei.c6
-rw-r--r--fs/nfs/read.c5
-rw-r--r--fs/nfs/super.c2
-rw-r--r--fs/nfs/write.c8
-rw-r--r--fs/nfsd/nfsfh.c4
-rw-r--r--fs/proc/base.c24
-rw-r--r--fs/proc/task_mmu.c50
-rw-r--r--fs/romfs/inode.c30
-rw-r--r--fs/super.c6
-rw-r--r--fs/ufs/balloc.c4
26 files changed, 152 insertions, 77 deletions
diff --git a/fs/aio.c b/fs/aio.c
index b74c567383bc..6af921940622 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -996,6 +996,14 @@ put_rq:
/* everything turned out well, dispose of the aiocb. */
ret = __aio_put_req(ctx, iocb);
+ /*
+ * We have to order our ring_info tail store above and test
+ * of the wait list below outside the wait lock. This is
+ * like in wake_up_bit() where clearing a bit has to be
+ * ordered with the unlocked test.
+ */
+ smp_mb();
+
if (waitqueue_active(&ctx->wait))
wake_up(&ctx->wait);
diff --git a/fs/bio.c b/fs/bio.c
index 3312fcc3c098..553b5b7960ad 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -1194,6 +1194,8 @@ EXPORT_SYMBOL(bio_hw_segments);
EXPORT_SYMBOL(bio_add_page);
EXPORT_SYMBOL(bio_add_pc_page);
EXPORT_SYMBOL(bio_get_nr_vecs);
+EXPORT_SYMBOL(bio_map_user);
+EXPORT_SYMBOL(bio_unmap_user);
EXPORT_SYMBOL(bio_map_kern);
EXPORT_SYMBOL(bio_pair_release);
EXPORT_SYMBOL(bio_split);
diff --git a/fs/buffer.c b/fs/buffer.c
index ddfdd2c80bf9..7ba58386beee 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -3213,7 +3213,7 @@ static int buffer_cpu_notify(struct notifier_block *self,
}
/**
- * bh_uptodate_or_lock: Test whether the buffer is uptodate
+ * bh_uptodate_or_lock - Test whether the buffer is uptodate
* @bh: struct buffer_head
*
* Return true if the buffer is up-to-date and false,
@@ -3232,7 +3232,7 @@ int bh_uptodate_or_lock(struct buffer_head *bh)
EXPORT_SYMBOL(bh_uptodate_or_lock);
/**
- * bh_submit_read: Submit a locked buffer for reading
+ * bh_submit_read - Submit a locked buffer for reading
* @bh: struct buffer_head
*
* Returns zero on success and -EIO on error.
diff --git a/fs/dquot.c b/fs/dquot.c
index 9c7feb62eed1..41b9dbd68b0e 100644
--- a/fs/dquot.c
+++ b/fs/dquot.c
@@ -1522,8 +1522,8 @@ int vfs_quota_off(struct super_block *sb, int type)
truncate_inode_pages(&toputinode[cnt]->i_data, 0);
mutex_unlock(&toputinode[cnt]->i_mutex);
mark_inode_dirty(toputinode[cnt]);
- iput(toputinode[cnt]);
}
+ iput(toputinode[cnt]);
mutex_unlock(&dqopt->dqonoff_mutex);
}
if (sb->s_bdev)
diff --git a/fs/ecryptfs/dentry.c b/fs/ecryptfs/dentry.c
index 841a032050a7..5e596583946c 100644
--- a/fs/ecryptfs/dentry.c
+++ b/fs/ecryptfs/dentry.c
@@ -80,8 +80,8 @@ static void ecryptfs_d_release(struct dentry *dentry)
{
if (ecryptfs_dentry_to_private(dentry)) {
if (ecryptfs_dentry_to_lower(dentry)) {
- mntput(ecryptfs_dentry_to_lower_mnt(dentry));
dput(ecryptfs_dentry_to_lower(dentry));
+ mntput(ecryptfs_dentry_to_lower_mnt(dentry));
}
kmem_cache_free(ecryptfs_dentry_info_cache,
ecryptfs_dentry_to_private(dentry));
diff --git a/fs/ext3/acl.c b/fs/ext3/acl.c
index d34e9967430a..a754d1848173 100644
--- a/fs/ext3/acl.c
+++ b/fs/ext3/acl.c
@@ -37,7 +37,7 @@ ext3_acl_from_disk(const void *value, size_t size)
return ERR_PTR(-EINVAL);
if (count == 0)
return NULL;
- acl = posix_acl_alloc(count, GFP_KERNEL);
+ acl = posix_acl_alloc(count, GFP_NOFS);
if (!acl)
return ERR_PTR(-ENOMEM);
for (n=0; n < count; n++) {
@@ -91,7 +91,7 @@ ext3_acl_to_disk(const struct posix_acl *acl, size_t *size)
*size = ext3_acl_size(acl->a_count);
ext_acl = kmalloc(sizeof(ext3_acl_header) + acl->a_count *
- sizeof(ext3_acl_entry), GFP_KERNEL);
+ sizeof(ext3_acl_entry), GFP_NOFS);
if (!ext_acl)
return ERR_PTR(-ENOMEM);
ext_acl->a_version = cpu_to_le32(EXT3_ACL_VERSION);
@@ -187,7 +187,7 @@ ext3_get_acl(struct inode *inode, int type)
}
retval = ext3_xattr_get(inode, name_index, "", NULL, 0);
if (retval > 0) {
- value = kmalloc(retval, GFP_KERNEL);
+ value = kmalloc(retval, GFP_NOFS);
if (!value)
return ERR_PTR(-ENOMEM);
retval = ext3_xattr_get(inode, name_index, "", value, retval);
@@ -335,7 +335,7 @@ ext3_init_acl(handle_t *handle, struct inode *inode, struct inode *dir)
if (error)
goto cleanup;
}
- clone = posix_acl_clone(acl, GFP_KERNEL);
+ clone = posix_acl_clone(acl, GFP_NOFS);
error = -ENOMEM;
if (!clone)
goto cleanup;
diff --git a/fs/ext3/resize.c b/fs/ext3/resize.c
index 9397d779c43d..0e97b6e07cb0 100644
--- a/fs/ext3/resize.c
+++ b/fs/ext3/resize.c
@@ -485,7 +485,7 @@ static int add_new_gdb(handle_t *handle, struct inode *inode,
goto exit_dindj;
n_group_desc = kmalloc((gdb_num + 1) * sizeof(struct buffer_head *),
- GFP_KERNEL);
+ GFP_NOFS);
if (!n_group_desc) {
err = -ENOMEM;
ext3_warning (sb, __FUNCTION__,
@@ -568,7 +568,7 @@ static int reserve_backup_gdb(handle_t *handle, struct inode *inode,
int res, i;
int err;
- primary = kmalloc(reserved_gdb * sizeof(*primary), GFP_KERNEL);
+ primary = kmalloc(reserved_gdb * sizeof(*primary), GFP_NOFS);
if (!primary)
return -ENOMEM;
diff --git a/fs/ext3/xattr.c b/fs/ext3/xattr.c
index fb89c299bece..a6ea4d6a8bb2 100644
--- a/fs/ext3/xattr.c
+++ b/fs/ext3/xattr.c
@@ -728,7 +728,7 @@ ext3_xattr_block_set(handle_t *handle, struct inode *inode,
ce = NULL;
}
ea_bdebug(bs->bh, "cloning");
- s->base = kmalloc(bs->bh->b_size, GFP_KERNEL);
+ s->base = kmalloc(bs->bh->b_size, GFP_NOFS);
error = -ENOMEM;
if (s->base == NULL)
goto cleanup;
@@ -740,7 +740,7 @@ ext3_xattr_block_set(handle_t *handle, struct inode *inode,
}
} else {
/* Allocate a buffer where we construct the new block. */
- s->base = kzalloc(sb->s_blocksize, GFP_KERNEL);
+ s->base = kzalloc(sb->s_blocksize, GFP_NOFS);
/* assert(header == s->base) */
error = -ENOMEM;
if (s->base == NULL)
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index c0076077d338..06557679ca41 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -751,7 +751,7 @@ int generic_osync_inode(struct inode *inode, struct address_space *mapping, int
EXPORT_SYMBOL(generic_osync_inode);
/**
- * writeback_acquire: attempt to get exclusive writeback access to a device
+ * writeback_acquire - attempt to get exclusive writeback access to a device
* @bdi: the device's backing_dev_info structure
*
* It is a waste of resources to have more than one pdflush thread blocked on
@@ -768,7 +768,7 @@ int writeback_acquire(struct backing_dev_info *bdi)
}
/**
- * writeback_in_progress: determine whether there is writeback in progress
+ * writeback_in_progress - determine whether there is writeback in progress
* @bdi: the device's backing_dev_info structure.
*
* Determine whether there is writeback in progress against a backing device.
@@ -779,7 +779,7 @@ int writeback_in_progress(struct backing_dev_info *bdi)
}
/**
- * writeback_release: relinquish exclusive writeback access against a device.
+ * writeback_release - relinquish exclusive writeback access against a device.
* @bdi: the device's backing_dev_info structure
*/
void writeback_release(struct backing_dev_info *bdi)
diff --git a/fs/hfs/brec.c b/fs/hfs/brec.c
index 878bf25dbc6a..92fb358ce824 100644
--- a/fs/hfs/brec.c
+++ b/fs/hfs/brec.c
@@ -229,7 +229,7 @@ skip:
static struct hfs_bnode *hfs_bnode_split(struct hfs_find_data *fd)
{
struct hfs_btree *tree;
- struct hfs_bnode *node, *new_node;
+ struct hfs_bnode *node, *new_node, *next_node;
struct hfs_bnode_desc node_desc;
int num_recs, new_rec_off, new_off, old_rec_off;
int data_start, data_end, size;
@@ -248,6 +248,17 @@ static struct hfs_bnode *hfs_bnode_split(struct hfs_find_data *fd)
new_node->type = node->type;
new_node->height = node->height;
+ if (node->next)
+ next_node = hfs_bnode_find(tree, node->next);
+ else
+ next_node = NULL;
+
+ if (IS_ERR(next_node)) {
+ hfs_bnode_put(node);
+ hfs_bnode_put(new_node);
+ return next_node;
+ }
+
size = tree->node_size / 2 - node->num_recs * 2 - 14;
old_rec_off = tree->node_size - 4;
num_recs = 1;
@@ -261,6 +272,8 @@ static struct hfs_bnode *hfs_bnode_split(struct hfs_find_data *fd)
/* panic? */
hfs_bnode_put(node);
hfs_bnode_put(new_node);
+ if (next_node)
+ hfs_bnode_put(next_node);
return ERR_PTR(-ENOSPC);
}
@@ -315,8 +328,7 @@ static struct hfs_bnode *hfs_bnode_split(struct hfs_find_data *fd)
hfs_bnode_write(node, &node_desc, 0, sizeof(node_desc));
/* update next bnode header */
- if (new_node->next) {
- struct hfs_bnode *next_node = hfs_bnode_find(tree, new_node->next);
+ if (next_node) {
next_node->prev = new_node->this;
hfs_bnode_read(next_node, &node_desc, 0, sizeof(node_desc));
node_desc.prev = cpu_to_be32(next_node->prev);
diff --git a/fs/isofs/compress.c b/fs/isofs/compress.c
index 37dbd6404787..defb932eee9a 100644
--- a/fs/isofs/compress.c
+++ b/fs/isofs/compress.c
@@ -72,6 +72,17 @@ static int zisofs_readpage(struct file *file, struct page *page)
offset = index & ~zisofs_block_page_mask;
blockindex = offset >> zisofs_block_page_shift;
maxpage = (inode->i_size + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
+
+ /*
+ * If this page is wholly outside i_size we just return zero;
+ * do_generic_file_read() will handle this for us
+ */
+ if (page->index >= maxpage) {
+ SetPageUptodate(page);
+ unlock_page(page);
+ return 0;
+ }
+
maxpage = min(zisofs_block_pages, maxpage-offset);
for ( i = 0 ; i < maxpage ; i++, offset++ ) {
diff --git a/fs/jbd/journal.c b/fs/jbd/journal.c
index 3943a8905eb2..9816293442ab 100644
--- a/fs/jbd/journal.c
+++ b/fs/jbd/journal.c
@@ -697,13 +697,14 @@ fail:
*/
/**
- * journal_t * journal_init_dev() - creates an initialises a journal structure
+ * journal_t * journal_init_dev() - creates and initialises a journal structure
* @bdev: Block device on which to create the journal
* @fs_dev: Device which hold journalled filesystem for this journal.
* @start: Block nr Start of journal.
* @len: Length of the journal in blocks.
* @blocksize: blocksize of journalling device
- * @returns: a newly created journal_t *
+ *
+ * Returns: a newly created journal_t *
*
* journal_init_dev creates a journal which maps a fixed contiguous
* range of blocks on an arbitrary block device.
diff --git a/fs/jbd/recovery.c b/fs/jbd/recovery.c
index 2b8edf4d6eaa..43bc5e5ed064 100644
--- a/fs/jbd/recovery.c
+++ b/fs/jbd/recovery.c
@@ -478,7 +478,7 @@ static int do_one_pass(journal_t *journal,
memcpy(nbh->b_data, obh->b_data,
journal->j_blocksize);
if (flags & JFS_FLAG_ESCAPE) {
- *((__be32 *)bh->b_data) =
+ *((__be32 *)nbh->b_data) =
cpu_to_be32(JFS_MAGIC_NUMBER);
}
diff --git a/fs/jbd/transaction.c b/fs/jbd/transaction.c
index c6cbb6cd59b2..2c9e8f5d13aa 100644
--- a/fs/jbd/transaction.c
+++ b/fs/jbd/transaction.c
@@ -1426,7 +1426,8 @@ int journal_stop(handle_t *handle)
return err;
}
-/**int journal_force_commit() - force any uncommitted transactions
+/**
+ * int journal_force_commit() - force any uncommitted transactions
* @journal: journal to force
*
* For synchronous operations: force any uncommitted transactions
@@ -1903,13 +1904,12 @@ zap_buffer_unlocked:
}
/**
- * void journal_invalidatepage()
- * @journal: journal to use for flush...
+ * void journal_invalidatepage() - invalidate a journal page
+ * @journal: journal to use for flush
* @page: page to flush
* @offset: length of page to invalidate.
*
* Reap page buffers containing data after offset in page.
- *
*/
void journal_invalidatepage(journal_t *journal,
struct page *page,
diff --git a/fs/jbd2/recovery.c b/fs/jbd2/recovery.c
index 146411387ada..5d0405a9e7ca 100644
--- a/fs/jbd2/recovery.c
+++ b/fs/jbd2/recovery.c
@@ -535,7 +535,7 @@ static int do_one_pass(journal_t *journal,
memcpy(nbh->b_data, obh->b_data,
journal->j_blocksize);
if (flags & JBD2_FLAG_ESCAPE) {
- *((__be32 *)bh->b_data) =
+ *((__be32 *)nbh->b_data) =
cpu_to_be32(JBD2_MAGIC_NUMBER);
}
diff --git a/fs/locks.c b/fs/locks.c
index f36f0e61558d..d83fab1b77b5 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -1275,13 +1275,13 @@ out:
EXPORT_SYMBOL(__break_lease);
/**
- * lease_get_mtime
+ * lease_get_mtime - get the last modified time of an inode
* @inode: the inode
* @time: pointer to a timespec which will contain the last modified time
*
* This is to force NFS clients to flush their caches for files with
* exclusive leases. The justification is that if someone has an
- * exclusive lease, then they could be modifiying it.
+ * exclusive lease, then they could be modifying it.
*/
void lease_get_mtime(struct inode *inode, struct timespec *time)
{
diff --git a/fs/namei.c b/fs/namei.c
index 941c8e8228c0..6b7a0eef4090 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1364,13 +1364,13 @@ static int __lookup_one_len(const char *name, struct qstr *this,
}
/**
- * lookup_one_len: filesystem helper to lookup single pathname component
+ * lookup_one_len - filesystem helper to lookup single pathname component
* @name: pathname component to lookup
* @base: base directory to lookup from
* @len: maximum length @len should be interpreted to
*
- * Note that this routine is purely a helper for filesystem useage and should
- * not be called by generic code. Also note that by using this function to
+ * Note that this routine is purely a helper for filesystem usage and should
+ * not be called by generic code. Also note that by using this function the
* nameidata argument is passed to the filesystem methods and a filesystem
* using this helper needs to be prepared for that.
*/
diff --git a/fs/nfs/read.c b/fs/nfs/read.c
index 3d7d9631e125..5a70be589bbe 100644
--- a/fs/nfs/read.c
+++ b/fs/nfs/read.c
@@ -533,7 +533,10 @@ readpage_async_filler(void *data, struct page *page)
if (len < PAGE_CACHE_SIZE)
zero_user_segment(page, len, PAGE_CACHE_SIZE);
- nfs_pageio_add_request(desc->pgio, new);
+ if (!nfs_pageio_add_request(desc->pgio, new)) {
+ error = desc->pgio->pg_error;
+ goto out_unlock;
+ }
return 0;
out_error:
error = PTR_ERR(new);
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index fcf4b982c885..dd4dfcd632ec 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -632,7 +632,7 @@ static int nfs_verify_server_address(struct sockaddr *addr)
switch (addr->sa_family) {
case AF_INET: {
struct sockaddr_in *sa = (struct sockaddr_in *)addr;
- return sa->sin_addr.s_addr != INADDR_ANY;
+ return sa->sin_addr.s_addr != htonl(INADDR_ANY);
}
case AF_INET6: {
struct in6_addr *sa = &((struct sockaddr_in6 *)addr)->sin6_addr;
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index 80c61fdb2720..bed63416a55b 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -39,6 +39,7 @@ static struct nfs_page * nfs_update_request(struct nfs_open_context*,
unsigned int, unsigned int);
static void nfs_pageio_init_write(struct nfs_pageio_descriptor *desc,
struct inode *inode, int ioflags);
+static void nfs_redirty_request(struct nfs_page *req);
static const struct rpc_call_ops nfs_write_partial_ops;
static const struct rpc_call_ops nfs_write_full_ops;
static const struct rpc_call_ops nfs_commit_ops;
@@ -288,7 +289,12 @@ static int nfs_page_async_flush(struct nfs_pageio_descriptor *pgio,
BUG();
}
spin_unlock(&inode->i_lock);
- nfs_pageio_add_request(pgio, req);
+ if (!nfs_pageio_add_request(pgio, req)) {
+ nfs_redirty_request(req);
+ nfs_end_page_writeback(page);
+ nfs_clear_page_tag_locked(req);
+ return pgio->pg_error;
+ }
return 0;
}
diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c
index 1eb771d79cca..3e6b3f41ee1f 100644
--- a/fs/nfsd/nfsfh.c
+++ b/fs/nfsd/nfsfh.c
@@ -232,6 +232,7 @@ fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access)
fhp->fh_dentry = dentry;
fhp->fh_export = exp;
nfsd_nr_verified++;
+ cache_get(&exp->h);
} else {
/*
* just rechecking permissions
@@ -241,6 +242,7 @@ fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access)
dprintk("nfsd: fh_verify - just checking\n");
dentry = fhp->fh_dentry;
exp = fhp->fh_export;
+ cache_get(&exp->h);
/*
* Set user creds for this exportpoint; necessary even
* in the "just checking" case because this may be a
@@ -252,8 +254,6 @@ fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access)
if (error)
goto out;
}
- cache_get(&exp->h);
-
error = nfsd_mode_check(rqstp, dentry->d_inode->i_mode, type);
if (error)
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 9a4da0aae02e..81d7d145292a 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -1036,6 +1036,26 @@ static const struct file_operations proc_loginuid_operations = {
.read = proc_loginuid_read,
.write = proc_loginuid_write,
};
+
+static ssize_t proc_sessionid_read(struct file * file, char __user * buf,
+ size_t count, loff_t *ppos)
+{
+ struct inode * inode = file->f_path.dentry->d_inode;
+ struct task_struct *task = get_proc_task(inode);
+ ssize_t length;
+ char tmpbuf[TMPBUFLEN];
+
+ if (!task)
+ return -ESRCH;
+ length = scnprintf(tmpbuf, TMPBUFLEN, "%u",
+ audit_get_sessionid(task));
+ put_task_struct(task);
+ return simple_read_from_buffer(buf, count, ppos, tmpbuf, length);
+}
+
+static const struct file_operations proc_sessionid_operations = {
+ .read = proc_sessionid_read,
+};
#endif
#ifdef CONFIG_FAULT_INJECTION
@@ -2270,7 +2290,7 @@ static const struct pid_entry tgid_base_stuff[] = {
DIR("fd", S_IRUSR|S_IXUSR, fd),
DIR("fdinfo", S_IRUSR|S_IXUSR, fdinfo),
#ifdef CONFIG_NET
- DIR("net", S_IRUGO|S_IXUSR, net),
+ DIR("net", S_IRUGO|S_IXUGO, net),
#endif
REG("environ", S_IRUSR, environ),
INF("auxv", S_IRUSR, pid_auxv),
@@ -2319,6 +2339,7 @@ static const struct pid_entry tgid_base_stuff[] = {
REG("oom_adj", S_IRUGO|S_IWUSR, oom_adjust),
#ifdef CONFIG_AUDITSYSCALL
REG("loginuid", S_IWUSR|S_IRUGO, loginuid),
+ REG("sessionid", S_IRUSR, sessionid),
#endif
#ifdef CONFIG_FAULT_INJECTION
REG("make-it-fail", S_IRUGO|S_IWUSR, fault_inject),
@@ -2649,6 +2670,7 @@ static const struct pid_entry tid_base_stuff[] = {
REG("oom_adj", S_IRUGO|S_IWUSR, oom_adjust),
#ifdef CONFIG_AUDITSYSCALL
REG("loginuid", S_IWUSR|S_IRUGO, loginuid),
+ REG("sessionid", S_IRUSR, sessionid),
#endif
#ifdef CONFIG_FAULT_INJECTION
REG("make-it-fail", S_IRUGO|S_IWUSR, fault_inject),
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 4206454734e0..9dfb5ff24209 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -527,13 +527,21 @@ struct pagemapread {
char __user *out, *end;
};
-#define PM_ENTRY_BYTES sizeof(u64)
-#define PM_RESERVED_BITS 3
-#define PM_RESERVED_OFFSET (64 - PM_RESERVED_BITS)
-#define PM_RESERVED_MASK (((1LL<<PM_RESERVED_BITS)-1) << PM_RESERVED_OFFSET)
-#define PM_SPECIAL(nr) (((nr) << PM_RESERVED_OFFSET) & PM_RESERVED_MASK)
-#define PM_NOT_PRESENT PM_SPECIAL(1LL)
-#define PM_SWAP PM_SPECIAL(2LL)
+#define PM_ENTRY_BYTES sizeof(u64)
+#define PM_STATUS_BITS 3
+#define PM_STATUS_OFFSET (64 - PM_STATUS_BITS)
+#define PM_STATUS_MASK (((1LL << PM_STATUS_BITS) - 1) << PM_STATUS_OFFSET)
+#define PM_STATUS(nr) (((nr) << PM_STATUS_OFFSET) & PM_STATUS_MASK)
+#define PM_PSHIFT_BITS 6
+#define PM_PSHIFT_OFFSET (PM_STATUS_OFFSET - PM_PSHIFT_BITS)
+#define PM_PSHIFT_MASK (((1LL << PM_PSHIFT_BITS) - 1) << PM_PSHIFT_OFFSET)
+#define PM_PSHIFT(x) (((u64) (x) << PM_PSHIFT_OFFSET) & PM_PSHIFT_MASK)
+#define PM_PFRAME_MASK ((1LL << PM_PSHIFT_OFFSET) - 1)
+#define PM_PFRAME(x) ((x) & PM_PFRAME_MASK)
+
+#define PM_PRESENT PM_STATUS(4LL)
+#define PM_SWAP PM_STATUS(2LL)
+#define PM_NOT_PRESENT PM_PSHIFT(PAGE_SHIFT)
#define PM_END_OF_BUFFER 1
static int add_to_pagemap(unsigned long addr, u64 pfn,
@@ -574,7 +582,7 @@ static int pagemap_pte_hole(unsigned long start, unsigned long end,
u64 swap_pte_to_pagemap_entry(pte_t pte)
{
swp_entry_t e = pte_to_swp_entry(pte);
- return PM_SWAP | swp_type(e) | (swp_offset(e) << MAX_SWAPFILES_SHIFT);
+ return swp_type(e) | (swp_offset(e) << MAX_SWAPFILES_SHIFT);
}
static int pagemap_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end,
@@ -588,9 +596,11 @@ static int pagemap_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end,
u64 pfn = PM_NOT_PRESENT;
pte = pte_offset_map(pmd, addr);
if (is_swap_pte(*pte))
- pfn = swap_pte_to_pagemap_entry(*pte);
+ pfn = PM_PFRAME(swap_pte_to_pagemap_entry(*pte))
+ | PM_PSHIFT(PAGE_SHIFT) | PM_SWAP;
else if (pte_present(*pte))
- pfn = pte_pfn(*pte);
+ pfn = PM_PFRAME(pte_pfn(*pte))
+ | PM_PSHIFT(PAGE_SHIFT) | PM_PRESENT;
/* unmap so we're not in atomic when we copy to userspace */
pte_unmap(pte);
err = add_to_pagemap(addr, pfn, pm);
@@ -611,12 +621,20 @@ static struct mm_walk pagemap_walk = {
/*
* /proc/pid/pagemap - an array mapping virtual pages to pfns
*
- * For each page in the address space, this file contains one 64-bit
- * entry representing the corresponding physical page frame number
- * (PFN) if the page is present. If there is a swap entry for the
- * physical page, then an encoding of the swap file number and the
- * page's offset into the swap file are returned. If no page is
- * present at all, PM_NOT_PRESENT is returned. This allows determining
+ * For each page in the address space, this file contains one 64-bit entry
+ * consisting of the following:
+ *
+ * Bits 0-55 page frame number (PFN) if present
+ * Bits 0-4 swap type if swapped
+ * Bits 5-55 swap offset if swapped
+ * Bits 55-60 page shift (page size = 1<<page shift)
+ * Bit 61 reserved for future use
+ * Bit 62 page swapped
+ * Bit 63 page present
+ *
+ * If the page is not present but in swap, then the PFN contains an
+ * encoding of the swap file number and the page's offset into the
+ * swap. Unmapped pages return a null PFN. This allows determining
* precisely which pages are mapped (or in swap) and comparing mapped
* pages between processes.
*
diff --git a/fs/romfs/inode.c b/fs/romfs/inode.c
index 00b6f0a518c8..3f13d491c7c7 100644
--- a/fs/romfs/inode.c
+++ b/fs/romfs/inode.c
@@ -340,8 +340,9 @@ static struct dentry *
romfs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
{
unsigned long offset, maxoff;
- int fslen, res;
- struct inode *inode;
+ long res;
+ int fslen;
+ struct inode *inode = NULL;
char fsname[ROMFS_MAXFN]; /* XXX dynamic? */
struct romfs_inode ri;
const char *name; /* got from dentry */
@@ -351,7 +352,7 @@ romfs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
offset = dir->i_ino & ROMFH_MASK;
lock_kernel();
if (romfs_copyfrom(dir, &ri, offset, ROMFH_SIZE) <= 0)
- goto out;
+ goto error;
maxoff = romfs_maxsize(dir->i_sb);
offset = be32_to_cpu(ri.spec) & ROMFH_MASK;
@@ -364,9 +365,9 @@ romfs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
for(;;) {
if (!offset || offset >= maxoff)
- goto out0;
+ goto success; /* negative success */
if (romfs_copyfrom(dir, &ri, offset, ROMFH_SIZE) <= 0)
- goto out;
+ goto error;
/* try to match the first 16 bytes of name */
fslen = romfs_strnlen(dir, offset+ROMFH_SIZE, ROMFH_SIZE);
@@ -397,23 +398,14 @@ romfs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
inode = romfs_iget(dir->i_sb, offset);
if (IS_ERR(inode)) {
res = PTR_ERR(inode);
- goto out;
+ goto error;
}
- /*
- * it's a bit funky, _lookup needs to return an error code
- * (negative) or a NULL, both as a dentry. ENOENT should not
- * be returned, instead we need to create a negative dentry by
- * d_add(dentry, NULL); and return 0 as no error.
- * (Although as I see, it only matters on writable file
- * systems).
- */
-
-out0: inode = NULL;
+success:
+ d_add(dentry, inode);
res = 0;
- d_add (dentry, inode);
-
-out: unlock_kernel();
+error:
+ unlock_kernel();
return ERR_PTR(res);
}
diff --git a/fs/super.c b/fs/super.c
index 010446d8c40a..d0a941a4e620 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -556,11 +556,11 @@ out:
}
/**
- * mark_files_ro
+ * mark_files_ro - mark all files read-only
* @sb: superblock in question
*
- * All files are marked read/only. We don't care about pending
- * delete files so this should be used in 'force' mode only
+ * All files are marked read-only. We don't care about pending
+ * delete files so this should be used in 'force' mode only.
*/
static void mark_files_ro(struct super_block *sb)
diff --git a/fs/ufs/balloc.c b/fs/ufs/balloc.c
index 1fca381f0ce2..1e7598fb9787 100644
--- a/fs/ufs/balloc.c
+++ b/fs/ufs/balloc.c
@@ -315,8 +315,8 @@ static void ufs_change_blocknr(struct inode *inode, sector_t beg,
}
UFSD(" change from %llu to %llu, pos %u\n",
- (unsigned long long)pos + oldb,
- (unsigned long long)pos + newb, pos);
+ (unsigned long long)(pos + oldb),
+ (unsigned long long)(pos + newb), pos);
bh->b_blocknr = newb + pos;
unmap_underlying_metadata(bh->b_bdev,
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-07-10 11:44:11 +0200