207 	struct semaphore_waiter waiter;  in __down_common()  local
209 	list_add_tail(&waiter.list, &sem->wait_list);  in __down_common()
210 	waiter.task = current;  in __down_common()
211 	waiter.up = false;  in __down_common()
222 		if (waiter.up)  in __down_common()
227 	list_del(&waiter.list);  in __down_common()
231 	list_del(&waiter.list);  in __down_common()
257 	struct semaphore_waiter *waiter = list_first_entry(&sem->wait_list,  in __up()  local
259 	list_del(&waiter->list);  in __up()
260 	waiter->up = true;  in __up()
261 	wake_up_process(waiter->task);  in __up()