From: Ming Lei <ming.lei@redhat.com>
To: Jens Axboe <axboe@kernel.dk>, Christoph Hellwig <hch@lst.de>
Cc: linux-block@vger.kernel.org, Ming Lei <ming.lei@redhat.com>,
Jan Kara <jack@suse.cz>
Subject: [PATCH] blk-mq: update hctx->dispatch_busy in case of real scheduler
Date: Fri, 28 May 2021 11:20:55 +0800 [thread overview]
Message-ID: <20210528032055.2242080-1-ming.lei@redhat.com> (raw)
Commit 6e6fcbc27e77 ("blk-mq: support batching dispatch in case of io")
starts to support io batching submission by using hctx->dispatch_busy.
However, blk_mq_update_dispatch_busy() isn't changed to update hctx->dispatch_busy
in that commit, so fix the issue by updating hctx->dispatch_busy in case
of real scheduler.
Reported-by: Jan Kara <jack@suse.cz>
Fixes: 6e6fcbc27e77 ("blk-mq: support batching dispatch in case of io")
Signed-off-by: Ming Lei <ming.lei@redhat.com>
---
block/blk-mq.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/block/blk-mq.c b/block/blk-mq.c
index f11d4018ce2e..4930f7119f22 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -1224,9 +1224,6 @@ static void blk_mq_update_dispatch_busy(struct blk_mq_hw_ctx *hctx, bool busy)
{
unsigned int ewma;
- if (hctx->queue->elevator)
- return;
-
ewma = hctx->dispatch_busy;
if (!ewma && !busy)
--
2.29.2
next reply other threads:[~2021-05-28 3:21 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-28 3:20 Ming Lei [this message]
2021-05-28 12:26 ` [PATCH] blk-mq: update hctx->dispatch_busy in case of real scheduler Jan Kara
2021-05-31 1:37 ` Ming Lei
2021-05-31 12:04 ` Jan Kara
2021-06-01 10:01 ` Ming Lei
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