summaryrefslogtreecommitdiff
path: root/include
diff options
context:
space:
mode:
authorLi Zefan <lizf@cn.fujitsu.com>2011-04-15 03:02:49 +0000
committerChris Mason <chris.mason@oracle.com>2011-05-14 16:10:26 -0400
commite1e8fb6a1ff3f9487e03a4cbf85b81d1316068ce (patch)
treea7cd1ba1f93d163e2ca02b8172888f43e444713f /include
parent1aba86d67f340a8001d67183ec32e8a62e3ec658 (diff)
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 'include')
-rw-r--r--include/linux/fs.h1
1 files changed, 0 insertions, 1 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h
index de9dd8119b71..56a41412903d 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -365,7 +365,6 @@ struct inodes_stat_t {
#define FS_EXTENT_FL 0x00080000 /* Extents */
#define FS_DIRECTIO_FL 0x00100000 /* Use direct i/o */
#define FS_NOCOW_FL 0x00800000 /* Do not cow file */
-#define FS_COW_FL 0x02000000 /* Cow file */
#define FS_RESERVED_FL 0x80000000 /* reserved for ext2 lib */
#define FS_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */