201     for (int i = 0; i < n; i++) // 对每一个completion都等一遍  in wait_for_multicompletion()  local
203         if (!completion_done(&x[i])) // 如果没有done，直接wait  in wait_for_multicompletion()
205             wait_for_completion(&x[i]);  in wait_for_multicompletion()
207         else if (!try_wait_for_completion(&x[i])) // 上面测试过done>0，那么这里尝试去获取一个done，如果失败了，就继续wait  in wait_for_multicompletion()
209             wait_for_completion(&x[i]);  in wait_for_multicompletion()
287     for (int i = 0; i < N; i++)  in __test_completion()  local
289         completion_init(&one_to_one[i]);  in __test_completion()
290         completion_init(&waiter_many_to_one[i]);  in __test_completion()
291         completion_init(&worker_many_to_one[i]);  in __test_completion()
294     for (int i = 0; i < N; i++)  in __test_completion()  local
296         waiter_data[i].id = -i; // waiter  in __test_completion()
297         waiter_data[i].many_to_one = &waiter_many_to_one[i];  in __test_completion()
298         waiter_data[i].one_to_one = &one_to_one[i];  in __test_completion()
299         waiter_data[i].one_to_many = one_to_many;  in __test_completion()
300         kthread_run(__test_completion_waiter, &waiter_data[i], "the %dth waiter", i);  in __test_completion()
303     for (int i = 0; i < N; i++)  in __test_completion()  local
305         worker_data[i].id = i; // worker  in __test_completion()
306         worker_data[i].many_to_one = &worker_many_to_one[i];  in __test_completion()
307         worker_data[i].one_to_one = &one_to_one[i];  in __test_completion()
308         worker_data[i].one_to_many = one_to_many;  in __test_completion()
309         kthread_run(__test_completion_worker, &worker_data[i], "the %dth worker", i);  in __test_completion()