diff options
| -rw-r--r-- | fs/notify/fanotify/fanotify.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/notify/fanotify/fanotify.c b/fs/notify/fanotify/fanotify.c index 8e574d6f6a80..5b0b6b485a9c 100644 --- a/fs/notify/fanotify/fanotify.c +++ b/fs/notify/fanotify/fanotify.c @@ -46,6 +46,16 @@ static int fanotify_merge(struct list_head *list, struct fsnotify_event *event) if (test_event->mask == event->mask) goto out; + /* + * if the refcnt == 1 this is the only queue + * for this event and so we can update the mask + * in place. + */ + if (atomic_read(&test_event->refcnt) == 1) { + test_event->mask |= event->mask; + goto out; + } + /* can't allocate memory, merge was no possible */ new_event = fsnotify_clone_event(test_event); if (unlikely(!new_event)) { |