216 	struct semaphore_waiter waiter;  in ___down_common()  local
218 	list_add_tail(&waiter.list, &sem->wait_list);  in ___down_common()
219 	waiter.task = current;  in ___down_common()
220 	waiter.up = false;  in ___down_common()
231 		if (waiter.up)  in ___down_common()
236 	list_del(&waiter.list);  in ___down_common()
240 	list_del(&waiter.list);  in ___down_common()
279 	struct semaphore_waiter *waiter = list_first_entry(&sem->wait_list,  in __up()  local
281 	list_del(&waiter->list);  in __up()
282 	waiter->up = true;  in __up()
283 	wake_q_add(wake_q, waiter->task);  in __up()