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| author |   Miklos Szeredi <mszeredi@redhat.com> | 2016-09-16 12:44:20 +0200 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2016-09-16 12:44:20 +0200 |
| commit | 598e3c8f72f5b77c84d2cb26cfd936ffb3cfdbaa (patch) | |
| tree | 485f1dd152279acde134219e011f3f1dadbe5495 /fs/namei.c | |
| parent | vfs: move permission checking into notify_change() for utimes(NULL) (diff) | |
| download | wireguard-linux-598e3c8f72f5b77c84d2cb26cfd936ffb3cfdbaa.tar.xz wireguard-linux-598e3c8f72f5b77c84d2cb26cfd936ffb3cfdbaa.zip | |
vfs: update ovl inode before relatime check
On overlayfs relatime_need_update() needs inode times to be correct on
overlay inode. But i_mtime and i_ctime are updated by filesystem code on
underlying inode only, so they will be out-of-date on the overlay inode.
This patch copies the times from the underlying inode if needed. This
can't be done if called from RCU lookup (link following) but link m/ctime
are not updated by fs, so this is all right.
This patch doesn't change functionality for anything but overlayfs.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/namei.c')
| -rw-r--r-- | fs/namei.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/namei.c b/fs/namei.c index adb04146df09..4bbcae1ba58e 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -1015,7 +1015,7 @@ const char *get_link(struct nameidata *nd) if (!(nd->flags & LOOKUP_RCU)) { touch_atime(&last->link); cond_resched(); - } else if (atime_needs_update(&last->link, inode)) { + } else if (atime_needs_update_rcu(&last->link, inode)) { if (unlikely(unlazy_walk(nd, NULL, 0))) return ERR_PTR(-ECHILD); touch_atime(&last->link); |