diff options
| author | Chris Mason | 2007-04-20 03:01:03 +0200 |
|---|---|---|
| committer | David Woodhouse | 2007-04-20 03:01:03 +0200 |
| commit | 8fd17795b2261ecb1bad2a6df09ef14c4957a3fb (patch) | |
| tree | baab31275c20f5848f11688678158cf50875834e /fs/btrfs/super.c | |
| parent | Btrfs: directory inode index is back (diff) | |
| download | kernel-qcow2-linux-8fd17795b2261ecb1bad2a6df09ef14c4957a3fb.tar.gz kernel-qcow2-linux-8fd17795b2261ecb1bad2a6df09ef14c4957a3fb.tar.xz kernel-qcow2-linux-8fd17795b2261ecb1bad2a6df09ef14c4957a3fb.zip | |
Btrfs: early fsync support
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/super.c')
| -rw-r--r-- | fs/btrfs/super.c | 37 |
1 files changed, 36 insertions, 1 deletions
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index dff2db0d1dc2..f99c764a59db 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -11,6 +11,7 @@ #include <linux/mpage.h> #include <linux/swap.h> #include <linux/writeback.h> +#include <linux/statfs.h> #include "ctree.h" #include "disk-io.h" #include "transaction.h" @@ -932,6 +933,26 @@ out_unlock: return err; } +static int btrfs_sync_file(struct file *file, + struct dentry *dentry, int datasync) +{ + struct inode *inode = dentry->d_inode; + struct btrfs_root *root = BTRFS_I(inode)->root; + int ret; + struct btrfs_trans_handle *trans; + + mutex_lock(&root->fs_info->fs_mutex); + trans = btrfs_start_transaction(root, 1); + if (!trans) { + ret = -ENOMEM; + goto out; + } + ret = btrfs_commit_transaction(trans, root); + mutex_unlock(&root->fs_info->fs_mutex); +out: + return ret > 0 ? EIO : ret; +} + static int btrfs_sync_fs(struct super_block *sb, int wait) { struct btrfs_trans_handle *trans; @@ -2353,6 +2374,19 @@ static int btrfs_getattr(struct vfsmount *mnt, return 0; } +static int btrfs_statfs(struct dentry *dentry, struct kstatfs *buf) +{ + struct btrfs_root *root = btrfs_sb(dentry->d_sb); + struct btrfs_super_block *disk_super = root->fs_info->disk_super; + + buf->f_namelen = BTRFS_NAME_LEN; + buf->f_blocks = btrfs_super_total_blocks(disk_super); + buf->f_bfree = buf->f_blocks - btrfs_super_blocks_used(disk_super); + buf->f_bavail = buf->f_bfree; + buf->f_bsize = dentry->d_sb->s_blocksize; + buf->f_type = BTRFS_SUPER_MAGIC; + return 0; +} static struct file_system_type btrfs_fs_type = { .owner = THIS_MODULE, .name = "btrfs", @@ -2362,7 +2396,6 @@ static struct file_system_type btrfs_fs_type = { }; static struct super_operations btrfs_super_ops = { - .statfs = simple_statfs, .delete_inode = btrfs_delete_inode, .put_super = btrfs_put_super, .read_inode = btrfs_read_locked_inode, @@ -2371,6 +2404,7 @@ static struct super_operations btrfs_super_ops = { .write_inode = btrfs_write_inode, .alloc_inode = btrfs_alloc_inode, .destroy_inode = btrfs_destroy_inode, + .statfs = btrfs_statfs, }; static struct inode_operations btrfs_dir_inode_operations = { @@ -2413,6 +2447,7 @@ static struct file_operations btrfs_file_operations = { .mmap = generic_file_mmap, .open = generic_file_open, .ioctl = btrfs_ioctl, + .fsync = btrfs_sync_file, }; static int __init init_btrfs_fs(void) |