commit fc84e1f941b91221092da5b3102ec82da24c5673 upstream.
In bfq_insert_request() we unlock bfqd->lock only to call trace_block_rq_insert() and then lock bfqd->lock again. This is really pointless since tracing is disabled if we really care about performance and even if the tracepoint is enabled, it is a quick call.
CC: stable@vger.kernel.org Tested-by: "yukuai (C)" yukuai3@huawei.com Signed-off-by: Jan Kara jack@suse.cz Reviewed-by: Christoph Hellwig hch@lst.de Link: https://lore.kernel.org/r/20220401102752.8599-5-jack@suse.cz Signed-off-by: Jens Axboe axboe@kernel.dk --- block/bfq-iosched.c | 3 --- 1 file changed, 3 deletions(-)
diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c index e14f421282dd..bad088103279 100644 --- a/block/bfq-iosched.c +++ b/block/bfq-iosched.c @@ -5537,11 +5537,8 @@ static void bfq_insert_request(struct blk_mq_hw_ctx *hctx, struct request *rq, return; }
- spin_unlock_irq(&bfqd->lock); - blk_mq_sched_request_inserted(rq);
- spin_lock_irq(&bfqd->lock); bfqq = bfq_init_rq(rq); if (!bfqq || at_head || blk_rq_is_passthrough(rq)) { if (at_head)