Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=000cb48ee18165776b5a2beb72ed18f66bc61878
Commit: 000cb48ee18165776b5a2beb72ed18f66bc61878
Parent: 0778361837bfaaa0bcf9ee79f0edd10e3a220899
Author: Jan Kara <[EMAIL PROTECTED]>
AuthorDate: Thu Feb 14 19:31:32 2008 -0800
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Thu Feb 14 20:58:06 2008 -0800
vfs: add explanation of I_DIRTY_DATASYNC bit
Add explanation of I_DIRTY_DATASYNC bit.
Signed-off-by: Jan Kara <[EMAIL PROTECTED]>
Cc: Joern Engel <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
include/linux/fs.h | 6 ++++--
1 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 18cfbf7..98ffb6e 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1284,8 +1284,10 @@ struct super_operations {
*
* I_DIRTY_SYNC Inode is dirty, but doesn't have to be written
on
* fdatasync(). i_atime is the usual cause.
- * I_DIRTY_DATASYNC Inode is dirty and must be written on fdatasync(), f.e.
- * because i_size changed.
+ * I_DIRTY_DATASYNC Data-related inode changes pending. We keep track of
+ * these changes separately from I_DIRTY_SYNC so that we
+ * don't have to write inode on fdatasync() when only
+ * mtime has changed in it.
* I_DIRTY_PAGES Inode has dirty pages. Inode itself may be clean.
* I_NEW get_new_inode() sets i_state to I_LOCK|I_NEW. Both
* are cleared by unlock_new_inode(), called from iget().
-
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