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authorTheodore Ts'o <tytso@mit.edu>2009-04-03 07:34:35 +0200
committerTheodore Ts'o <tytso@mit.edu>2009-04-03 07:34:35 +0200
commitf7ab34ea723ed304b19698efca85d6f40cecd99b (patch)
tree28a609a654a24bc40d694fd2ec87a1f785c97c79 /include
parentext3: Use WRITE_SYNC for commits which are caused by fsync() (diff)
downloadlinux-f7ab34ea723ed304b19698efca85d6f40cecd99b.tar.xz
linux-f7ab34ea723ed304b19698efca85d6f40cecd99b.zip
ext3: Add replace-on-truncate hueristics for data=writeback mode
In data=writeback mode, start an asynchronous flush when closing a file which had been previously truncated down to zero. This lowers the probability of data loss in the case of applications that attempt to replace a file using truncate. Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'include')
-rw-r--r--include/linux/ext3_fs.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/ext3_fs.h b/include/linux/ext3_fs.h
index dd495b8c3091..d2630c56cb34 100644
--- a/include/linux/ext3_fs.h
+++ b/include/linux/ext3_fs.h
@@ -208,6 +208,7 @@ static inline __u32 ext3_mask_flags(umode_t mode, __u32 flags)
#define EXT3_STATE_JDATA 0x00000001 /* journaled data exists */
#define EXT3_STATE_NEW 0x00000002 /* inode is newly created */
#define EXT3_STATE_XATTR 0x00000004 /* has in-inode xattrs */
+#define EXT3_STATE_FLUSH_ON_CLOSE 0x00000008
/* Used to pass group descriptor data when online resize is done */
struct ext3_new_group_input {