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| author | Jan Kara <jack@suse.cz> | 2008-02-14 19:31:32 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-14 20:58:06 -0800 |
| commit | 000cb48ee18165776b5a2beb72ed18f66bc61878 (patch) | |
| tree | 0f2f689f93c5ef08641d659c8b624e23ebbca8db | |
| parent | 0778361837bfaaa0bcf9ee79f0edd10e3a220899 (diff) | |
| download | linux-000cb48ee18165776b5a2beb72ed18f66bc61878.tar.gz linux-000cb48ee18165776b5a2beb72ed18f66bc61878.tar.bz2 linux-000cb48ee18165776b5a2beb72ed18f66bc61878.zip | |
vfs: add explanation of I_DIRTY_DATASYNC bit
Add explanation of I_DIRTY_DATASYNC bit.
Signed-off-by: Jan Kara <jack@suse.cz>
Cc: Joern Engel <joern@logfs.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | 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 18cfbf76ec5b..98ffb6ead434 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(). |