return_pbn_lock_to_pool
return_pbn_lock_to_pool(pool, &pool->locks[i].lock);
return_pbn_lock_to_pool(zone->lock_pool, new_lock);
return_pbn_lock_to_pool(zone->lock_pool, vdo_forget(new_lock));
return_pbn_lock_to_pool(zone->lock_pool, lock);