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blk-mq: don't plug for head insertions in blk_execute_rq_nowait

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Plugs never insert at head, so don't plug for head insertions.

Fixes: 1c2d2fff6d ("block: wire-up support for passthrough plugging")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Link: https://lore.kernel.org/r/20230413064057.707578-2-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2023-04-13 08:40:38 +02:00 committed by Jens Axboe
parent 8e15dfbd9a
commit 50947d7fe9
1 changed files with 1 additions and 1 deletions
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2
block/blk-mq.c
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@ -1299,7 +1299,7 @@ void blk_execute_rq_nowait(struct request *rq, bool at_head)
* device, directly accessing the plug instead of using blk_mq_plug()
* should not have any consequences.
*/
if (current->plug)
if (current->plug && !at_head)
blk_add_rq_to_plug(current->plug, rq);
else
blk_mq_sched_insert_request(rq, at_head, true, false);