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Subject[PATCH 12/27] r-o-bind-mounts-elevate-write-count-for-do_sys_utime-and-touch_atime
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Date


Acked-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
linux-2.6.git-dave/fs/inode.c | 20 ++++++++++++--------
1 file changed, 12 insertions(+), 8 deletions(-)
diff -puN fs/inode.c~r-o-bind-mounts-elevate-write-count-for-do_sys_utime-and-touch_atime fs/inode.c
--- linux-2.6.git/fs/inode.c~r-o-bind-mounts-elevate-write-count-for-do_sys_utime-and-touch_atime 2007-11-01 14:46:12.000000000 -0700
+++ linux-2.6.git-dave/fs/inode.c 2007-11-01 14:46:12.000000000 -0700
@@ -1203,22 +1203,23 @@ void touch_atime(struct vfsmount *mnt, s
struct inode *inode = dentry->d_inode;
struct timespec now;

- if (inode->i_flags & S_NOATIME)
+ if (mnt && mnt_want_write(mnt))
return;
+ if (inode->i_flags & S_NOATIME)
+ goto out;
if (IS_NOATIME(inode))
- return;
+ goto out;
if ((inode->i_sb->s_flags & MS_NODIRATIME) && S_ISDIR(inode->i_mode))
- return;
+ goto out;

/*
* We may have a NULL vfsmount when coming from NFSD
*/
if (mnt) {
if (mnt->mnt_flags & MNT_NOATIME)
- return;
+ goto out;
if ((mnt->mnt_flags & MNT_NODIRATIME) && S_ISDIR(inode->i_mode))
- return;
-
+ goto out;
if (mnt->mnt_flags & MNT_RELATIME) {
/*
* With relative atime, only update atime if the
@@ -1229,16 +1230,19 @@ void touch_atime(struct vfsmount *mnt, s
&inode->i_atime) < 0 &&
timespec_compare(&inode->i_ctime,
&inode->i_atime) < 0)
- return;
+ goto out;
}
}

now = current_fs_time(inode->i_sb);
if (timespec_equal(&inode->i_atime, &now))
- return;
+ goto out;

inode->i_atime = now;
mark_inode_dirty_sync(inode);
+out:
+ if (mnt)
+ mnt_drop_write(mnt);
}
EXPORT_SYMBOL(touch_atime);

_
-
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