bfq_better_to_idle
static bool bfq_better_to_idle(struct bfq_queue *bfqq);
!bfq_better_to_idle(bfqd->in_service_queue)) &&
return RB_EMPTY_ROOT(&bfqq->sort_list) && bfq_better_to_idle(bfqq);
(bfqq->dispatched != 0 && bfq_better_to_idle(bfqq))) {
!bfq_better_to_idle(bfqq)))