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authorBart Van Assche <bvanassche@acm.org>2019-07-01 08:47:30 -0700
committerJens Axboe <axboe@kernel.dk>2019-07-02 21:03:38 -0600
commit970d168de636ddac8221cbd4a11d7678943e7379 (patch)
tree622620d4308df3a0b437f1ae4f84e40d73d68333 /block/blk-mq.c
parentc05f42206f4de12b6807270fc669b45472f1bdb7 (diff)
downloadlinux-970d168de636ddac8221cbd4a11d7678943e7379.tar.bz2
blk-mq: simplify blk_mq_make_request()
Move the blk_mq_bio_to_request() call in front of the if-statement. Cc: Hannes Reinecke <hare@suse.com> Cc: Omar Sandoval <osandov@fb.com> Reviewed-by: Minwoo Im <minwoo.im.dev@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Ming Lei <ming.lei@redhat.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-mq.c')
-rw-r--r--block/blk-mq.c10
1 files 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);
}