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Btrfs: add datacow flag in inode flag

PATCH In review liubo 1 participant 1 message Mar 21, 2011

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PATCH v2 1/2 Btrfs: add datacow flag in inode flag

For datacow control, the corresponding inode flags are needed. This is for btrfs use.

v1->v2:
Change FS_COW_FL to another bit due to conflict with the upstream e2fsprogs

Signed-off-by Liu Bo <[email protected]>
---
 include/linux/fs.h |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
include/linux/fs.h +2 -0
index 63d069b..dbcb47e 100644
@@ -353,6 +353,8 @@ struct inodes_stat_t {
 #define FS_TOPDIR_FL			0x00020000 /* Top of directory hierarchies*/
 #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 */
Signature · 1 line
1.6.5.2