FSNOTIFY_MARK_FLAG_ALIVE
if (!(mark->flags & FSNOTIFY_MARK_FLAG_ALIVE)) {
mark->flags &= ~FSNOTIFY_MARK_FLAG_ALIVE;
mark->flags |= FSNOTIFY_MARK_FLAG_ALIVE | FSNOTIFY_MARK_FLAG_ATTACHED;
mark->flags &= ~(FSNOTIFY_MARK_FLAG_ALIVE |