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authorEric Paris <eparis@redhat.com>2010-10-28 17:21:59 -0400
committerEric Paris <eparis@redhat.com>2010-10-28 17:22:16 -0400
commit192ca4d1941228e69c1fbeebab317725407e6e65 (patch)
treecff474f312a41b5ab4fbbf72a558675f377e1808
parent8fcd65280abc4699510f1853ede31f43e8a3783a (diff)
downloadop-kernel-dev-192ca4d1941228e69c1fbeebab317725407e6e65.zip
op-kernel-dev-192ca4d1941228e69c1fbeebab317725407e6e65.tar.gz
fanotify: do not recalculate the mask if the ignored mask changed
If fanotify sets a new bit in the ignored mask it will cause the generic fsnotify layer to recalculate the real mask. This is stupid since we didn't change that part. Signed-off-by: Eric Paris <eparis@redhat.com>
-rw-r--r--fs/notify/fanotify/fanotify_user.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c
index ff1a908..fa71d5d 100644
--- a/fs/notify/fanotify/fanotify_user.c
+++ b/fs/notify/fanotify/fanotify_user.c
@@ -558,15 +558,15 @@ static __u32 fanotify_mark_add_to_mask(struct fsnotify_mark *fsn_mark,
__u32 mask,
unsigned int flags)
{
- __u32 oldmask;
+ __u32 oldmask = -1;
spin_lock(&fsn_mark->lock);
if (!(flags & FAN_MARK_IGNORED_MASK)) {
oldmask = fsn_mark->mask;
fsnotify_set_mark_mask_locked(fsn_mark, (oldmask | mask));
} else {
- oldmask = fsn_mark->ignored_mask;
- fsnotify_set_mark_ignored_mask_locked(fsn_mark, (oldmask | mask));
+ __u32 tmask = fsn_mark->ignored_mask | mask;
+ fsnotify_set_mark_ignored_mask_locked(fsn_mark, tmask);
if (flags & FAN_MARK_IGNORED_SURV_MODIFY)
fsn_mark->flags |= FSNOTIFY_MARK_FLAG_IGNORED_SURV_MODIFY;
}
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