From 970d168de636ddac8221cbd4a11d7678943e7379 Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Mon, 1 Jul 2019 08:47:30 -0700 Subject: [PATCH] blk-mq: simplify blk_mq_make_request() Move the blk_mq_bio_to_request() call in front of the if-statement. Cc: Hannes Reinecke Cc: Omar Sandoval Reviewed-by: Minwoo Im Reviewed-by: Christoph Hellwig Reviewed-by: Ming Lei Signed-off-by: Bart Van Assche Signed-off-by: Jens Axboe --- block/blk-mq.c | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) diff --git a/block/blk-mq.c b/block/blk-mq.c index 0cb1b152f320..e5ef40c603ca 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -1971,10 +1971,10 @@ static blk_qc_t blk_mq_make_request(struct request_queue *q, struct bio *bio) cookie = request_to_qc_t(data.hctx, rq); + blk_mq_bio_to_request(rq, bio, nr_segs); + plug = current->plug; if (unlikely(is_flush_fua)) { - blk_mq_bio_to_request(rq, bio, nr_segs); - /* bypass scheduler for flush rq */ blk_insert_flush(rq); blk_mq_run_hw_queue(data.hctx, true); @@ -1986,8 +1986,6 @@ static blk_qc_t blk_mq_make_request(struct request_queue *q, struct bio *bio) unsigned int request_count = plug->rq_count; struct request *last = NULL; - blk_mq_bio_to_request(rq, bio, nr_segs); - if (!request_count) trace_block_plug(q); else @@ -2001,8 +1999,6 @@ static blk_qc_t blk_mq_make_request(struct request_queue *q, struct bio *bio) blk_add_rq_to_plug(plug, rq); } else if (plug && !blk_queue_nomerges(q)) { - blk_mq_bio_to_request(rq, bio, nr_segs); - /* * We do limited plugging. If the bio can be merged, do that. * Otherwise the existing request in the plug list will be @@ -2027,10 +2023,8 @@ static blk_qc_t blk_mq_make_request(struct request_queue *q, struct bio *bio) } } else if ((q->nr_hw_queues > 1 && is_sync) || (!q->elevator && !data.hctx->dispatch_busy)) { - blk_mq_bio_to_request(rq, bio, nr_segs); blk_mq_try_issue_directly(data.hctx, rq, &cookie); } else { - blk_mq_bio_to_request(rq, bio, nr_segs); blk_mq_sched_insert_request(rq, false, true, true); } -- 2.30.2