From: Ming Lei <ming.lei@redhat.com>
To: Jens Axboe <axboe@fb.com>,
linux-block@vger.kernel.org,
Christoph Hellwig <hch@infradead.org>
Cc: Omar Sandoval <osandov@fb.com>,
Bart Van Assche <bart.vanassche@sandisk.com>,
Hannes Reinecke <hare@suse.com>,
linux-kernel@vger.kernel.org, Ming Lei <ming.lei@redhat.com>
Subject: [PATCH V3 2/7] blk-flush: don't run queue for requests of bypassing flush
Date: Thu, 2 Nov 2017 23:24:33 +0800 [thread overview]
Message-ID: <20171102152438.25324-3-ming.lei@redhat.com> (raw)
In-Reply-To: <20171102152438.25324-1-ming.lei@redhat.com>
blk_insert_flush() should only insert request since run queue always
follows it.
In case of bypassing flush, we don't need to run queue because every
blk_insert_flush() follows one run queue.
Signed-off-by: Ming Lei <ming.lei@redhat.com>
---
block/blk-flush.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/block/blk-flush.c b/block/blk-flush.c
index 4938bec8cfef..81bd1a843043 100644
--- a/block/blk-flush.c
+++ b/block/blk-flush.c
@@ -463,7 +463,7 @@ void blk_insert_flush(struct request *rq)
if ((policy & REQ_FSEQ_DATA) &&
!(policy & (REQ_FSEQ_PREFLUSH | REQ_FSEQ_POSTFLUSH))) {
if (q->mq_ops)
- blk_mq_sched_insert_request(rq, false, true, false, false);
+ blk_mq_sched_insert_request(rq, false, false, false, false);
else
list_add_tail(&rq->queuelist, &q->queue_head);
return;
--
2.9.5
next prev parent reply other threads:[~2017-11-02 15:25 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-02 15:24 [PATCH V3 0/7] blk-mq: don't allocate driver tag beforehand for flush rq Ming Lei
2017-11-02 15:24 ` [PATCH V3 1/7] blk-mq: put the driver tag of nxt rq before first one is requeued Ming Lei
2017-11-02 15:24 ` Ming Lei [this message]
2017-11-02 15:24 ` [PATCH V3 3/7] block: pass 'run_queue' to blk_mq_request_bypass_insert Ming Lei
2017-11-02 15:24 ` [PATCH V3 4/7] blk-flush: use blk_mq_request_bypass_insert() Ming Lei
2017-11-02 15:24 ` [PATCH V3 5/7] blk-mq-sched: decide how to handle flush rq via RQF_FLUSH_SEQ Ming Lei
2017-11-02 15:24 ` [PATCH V3 6/7] blk-mq: move blk_mq_put_driver_tag*() into blk-mq.h Ming Lei
2017-11-02 15:24 ` [PATCH V3 7/7] blk-mq: don't allocate driver tag beforehand for flush rq Ming Lei
2017-11-04 4:17 ` [PATCH V3 0/7] " Ming Lei
2017-11-04 14:18 ` Jens Axboe
2017-11-04 18:49 ` Jens Axboe
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