RBD_LOCK_STATE_QUIESCING
need_wakeup = (rbd_dev->lock_state == RBD_LOCK_STATE_QUIESCING &&
rbd_dev->lock_state = RBD_LOCK_STATE_QUIESCING;
if (rbd_dev->lock_state != RBD_LOCK_STATE_QUIESCING)
rbd_dev->lock_state == RBD_LOCK_STATE_QUIESCING;