__clear_task_blocked_on
__clear_task_blocked_on(p, m);
__clear_task_blocked_on(current, lock);
__clear_task_blocked_on(current, lock);
__clear_task_blocked_on(next, lock);
__clear_task_blocked_on(waiter->task, lock);
__clear_task_blocked_on(owner, NULL);
__clear_task_blocked_on(p, mutex);