[BUGFIX] dnotify: handle_event shouldn't match on FS_EVENT_ON_CHILD

[Andreas Gruenbacher <agruen@suse.de>]

Mask off FS_EVENT_ON_CHILD in dnotify_handle_event().  Otherwise, when there
is more than one watch on a directory and dnotify_should_send_event()
succeeds, events with FS_EVENT_ON_CHILD set will trigger all watches and cause
spurious events.

This case was overlooked in commit e42e2773.

Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
---
 fs/notify/dnotify/dnotify.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/fs/notify/dnotify/dnotify.c b/fs/notify/dnotify/dnotify.c
index 828a889..0a8f1de 100644
--- a/fs/notify/dnotify/dnotify.c
+++ b/fs/notify/dnotify/dnotify.c
@@ -106,7 +106,7 @@ static int dnotify_handle_event(struct fsnotify_group *group,
 	spin_lock(&entry->lock);
 	prev = &dnentry->dn;
 	while ((dn = *prev) != NULL) {
-		if ((dn->dn_mask & event->mask) == 0) {
+		if ((dn->dn_mask & event->mask & ~FS_EVENT_ON_CHILD) == 0) {
 			prev = &dn->dn_next;
 			continue;
 		}
--