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| author | Mitch Harder <mitch.harder@sabayonlinux.org> | 2012-07-24 11:58:43 -0600 |
|---|---|---|
| committer | Chris Mason <chris.mason@fusionio.com> | 2012-07-25 16:14:31 -0400 |
| commit | 2b0ce2c2909368d124a78a88e5c7106fdcba6221 (patch) | |
| tree | 8a8e2f4de870c73174b9720d25f69e4ad5f27608 /fs/btrfs/ioctl.c | |
| parent | b478b2baa37ac99fc04a30809c780dd5dfd43595 (diff) | |
| download | linux-2b0ce2c2909368d124a78a88e5c7106fdcba6221.tar.bz2 | |
Btrfs: Check INCOMPAT flags on remount and add helper function
In support of the recently added capability to remount with lzo
compression, provide a helper function to check the compression
INCOMPAT flags when remounting with lzo compression, and set
the flags if necessary.
Also, implement the new helper function when defragmenting with
explicit lzo compression and when setting the default subvolume.
Signed-off-by: Mitch Harder <mitch.harder@sabayonlinux.org>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
Diffstat (limited to 'fs/btrfs/ioctl.c')
| -rw-r--r-- | fs/btrfs/ioctl.c | 16 |
1 files changed, 2 insertions, 14 deletions
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index e54b663fd3aa..3f3cbe928a1a 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -1053,11 +1053,9 @@ int btrfs_defrag_file(struct inode *inode, struct file *file, u64 newer_than, unsigned long max_to_defrag) { struct btrfs_root *root = BTRFS_I(inode)->root; - struct btrfs_super_block *disk_super; struct file_ra_state *ra = NULL; unsigned long last_index; u64 isize = i_size_read(inode); - u64 features; u64 last_len = 0; u64 skip = 0; u64 defrag_end = 0; @@ -1244,11 +1242,8 @@ int btrfs_defrag_file(struct inode *inode, struct file *file, mutex_unlock(&inode->i_mutex); } - disk_super = root->fs_info->super_copy; - features = btrfs_super_incompat_flags(disk_super); if (range->compress_type == BTRFS_COMPRESS_LZO) { - features |= BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO; - btrfs_set_super_incompat_flags(disk_super, features); + btrfs_set_fs_incompat(root->fs_info, COMPRESS_LZO); } ret = defrag_count; @@ -2784,8 +2779,6 @@ static long btrfs_ioctl_default_subvol(struct file *file, void __user *argp) struct btrfs_path *path; struct btrfs_key location; struct btrfs_disk_key disk_key; - struct btrfs_super_block *disk_super; - u64 features; u64 objectid = 0; u64 dir_id; @@ -2836,12 +2829,7 @@ static long btrfs_ioctl_default_subvol(struct file *file, void __user *argp) btrfs_mark_buffer_dirty(path->nodes[0]); btrfs_free_path(path); - disk_super = root->fs_info->super_copy; - features = btrfs_super_incompat_flags(disk_super); - if (!(features & BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL)) { - features |= BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL; - btrfs_set_super_incompat_flags(disk_super, features); - } + btrfs_set_fs_incompat(root->fs_info, DEFAULT_SUBVOL); btrfs_end_transaction(trans, root); return 0; |