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| author | Li Zefan <lizf@cn.fujitsu.com> | 2011-04-15 07:02:49 +0400 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2011-05-15 00:10:26 +0400 |
| commit | e1e8fb6a1ff3f9487e03a4cbf85b81d1316068ce (patch) | |
| tree | a7cd1ba1f93d163e2ca02b8172888f43e444713f /Documentation | |
| parent | 1aba86d67f340a8001d67183ec32e8a62e3ec658 (diff) | |
| download | linux-e1e8fb6a1ff3f9487e03a4cbf85b81d1316068ce.tar.xz | |
fs: remove FS_COW_FL
FS_COW_FL and FS_NOCOW_FL were newly introduced to control per file
COW in btrfs, but FS_NOCOW_FL is sufficient.
The fact is we don't have corresponding BTRFS_INODE_COW flag.
COW is default, and FS_NOCOW_FL can be used to switch off COW for
a single file.
If we mount btrfs with nodatacow, a newly created file will be set with
the FS_NOCOW_FL flag. So to turn on COW for it, we can just clear the
FS_NOCOW_FL flag.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions