block: change flush sequence list addition back to front add (10beafc1) · Commits · 戴 / test

block/blk-flush.c

+7 −4

Original line number	Diff line number	Diff line
		@@ -140,13 +140,16 @@ static void mq_flush_run(struct work_struct *work)
		blk_mq_insert_request(rq, false, true, false);
		}

		static bool blk_flush_queue_rq(struct request *rq)
		static bool blk_flush_queue_rq(struct request *rq, bool add_front)
		{
		if (rq->q->mq_ops) {
		INIT_WORK(&rq->mq_flush_work, mq_flush_run);
		kblockd_schedule_work(rq->q, &rq->mq_flush_work);
		return false;
		} else {
		if (add_front)
		list_add(&rq->queuelist, &rq->q->queue_head);
		else
		list_add_tail(&rq->queuelist, &rq->q->queue_head);
		return true;
		}
		@@ -193,7 +196,7 @@ static bool blk_flush_complete_seq(struct request *rq, unsigned int seq,

		case REQ_FSEQ_DATA:
		list_move_tail(&rq->flush.list, &q->flush_data_in_flight);
		queued = blk_flush_queue_rq(rq);
		queued = blk_flush_queue_rq(rq, true);
		break;

		case REQ_FSEQ_DONE:
		@@ -326,7 +329,7 @@ static bool blk_kick_flush(struct request_queue *q)
		q->flush_rq->rq_disk = first_rq->rq_disk;
		q->flush_rq->end_io = flush_end_io;

		return blk_flush_queue_rq(q->flush_rq);
		return blk_flush_queue_rq(q->flush_rq, false);
		}

		static void flush_data_end_io(struct request *rq, int error)