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Commit 92f399c7 authored by Shaohua Li's avatar Shaohua Li Committed by Jens Axboe
Browse files

blk-mq: mq plug list breakage 



We switched to plug mq_list for mq, but some code are still using old list.

Signed-off-by: default avatarShaohua Li <shli@fusionio.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 3228f48b

block/blk-core.c

+7 −1
Original line number Diff line number Diff line
@@ -1401,13 +1401,19 @@ bool blk_attempt_plug_merge(struct request_queue *q, struct bio *bio, 
	struct blk_plug *plug;

	struct request *rq;

	bool ret = false;

	struct list_head *plug_list;



	plug = current->plug;

	if (!plug)

		goto out;

	*request_count = 0;



	list_for_each_entry_reverse(rq, &plug->list, queuelist) {

	if (q->mq_ops)

		plug_list = &plug->mq_list;

	else

		plug_list = &plug->list;



	list_for_each_entry_reverse(rq, plug_list, queuelist) {

		int el_ret;



		if (rq->q == q)

block/blk-mq.c

+1 −1
Original line number Diff line number Diff line
@@ -950,7 +950,7 @@ static void blk_mq_make_request(struct request_queue *q, struct bio *bio) 


		if (plug) {

			blk_mq_bio_to_request(rq, bio);

			if (list_empty(&plug->list))

			if (list_empty(&plug->mq_list))

				trace_block_plug(q);

			else if (request_count >= BLK_MAX_REQUEST_COUNT) {

				blk_flush_plug_list(plug, false);