From: Christoph Hellwig hch@lst.de
[ Upstream commit 50947d7fe9fa6abe3ddc40769dfb02a51c58edb6 ]
Plugs never insert at head, so don't plug for head insertions.
Fixes: 1c2d2fff6dc0 ("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 Signed-off-by: Sasha Levin sashal@kernel.org --- block/blk-mq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/block/blk-mq.c b/block/blk-mq.c index b3ebf604b1dd5..1ab41fbca0946 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -1313,7 +1313,7 @@ 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);