RBD_WATCH_STATE_REGISTERED
if (rbd_dev->watch_state == RBD_WATCH_STATE_REGISTERED) {
rbd_dev->watch_state = RBD_WATCH_STATE_REGISTERED;
if (rbd_dev->watch_state == RBD_WATCH_STATE_REGISTERED)
rbd_dev->watch_state = RBD_WATCH_STATE_REGISTERED;