From 4cafe86c9267f9dd5819df946ba8c038ba958370 Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Fri, 3 Dec 2021 21:15:34 +0800 Subject: blk-mq: run dispatch lock once in case of issuing from list It isn't necessary to call blk_mq_run_dispatch_ops() once for issuing single request directly, and enough to do it one time when issuing from whole list. Signed-off-by: Ming Lei Link: https://lore.kernel.org/r/20211203131534.3668411-5-ming.lei@redhat.com Signed-off-by: Jens Axboe --- block/blk-mq-sched.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'block/blk-mq-sched.c') diff --git a/block/blk-mq-sched.c b/block/blk-mq-sched.c index 0d7257848f7e..55488ba97823 100644 --- a/block/blk-mq-sched.c +++ b/block/blk-mq-sched.c @@ -475,7 +475,8 @@ void blk_mq_sched_insert_requests(struct blk_mq_hw_ctx *hctx, * us one extra enqueue & dequeue to sw queue. */ if (!hctx->dispatch_busy && !run_queue_async) { - blk_mq_try_issue_list_directly(hctx, list); + blk_mq_run_dispatch_ops(hctx->queue, + blk_mq_try_issue_list_directly(hctx, list)); if (list_empty(list)) goto out; } -- cgit