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From: Ming Lei <ming.lei@redhat.com>
To: Jens Axboe <axboe@kernel.dk>
Cc: linux-block@vger.kernel.org, Christoph Hellwig <hch@lst.de>,
	Bart Van Assche <bvanassche@acm.org>,
	John Garry <john.garry@huawei.com>,
	Keith Busch <kbusch@kernel.org>
Subject: Re: [PATCH V2] blk-mq: don't grab rq's refcount in blk_mq_check_expired()
Date: Tue, 17 Aug 2021 09:03:51 +0800	[thread overview]
Message-ID: <YRsK9/ewQFLaRtLZ@T590> (raw)
In-Reply-To: <20210811155202.629575-1-ming.lei@redhat.com>

On Wed, Aug 11, 2021 at 11:52:02PM +0800, Ming Lei wrote:
> Inside blk_mq_queue_tag_busy_iter() we already grabbed request's
> refcount before calling ->fn(), so needn't to grab it one more time
> in blk_mq_check_expired().
> 
> Meantime remove extra request expire check in blk_mq_check_expired().
> 
> Cc: Keith Busch <kbusch@kernel.org>
> Signed-off-by: Ming Lei <ming.lei@redhat.com>
> ---
> V2:
> 	- remove extra request expire check as suggested by Keith
> 	- modify comment a bit
> 

Hello Jens,

Ping...

Thanks,
Ming


  parent reply	other threads:[~2021-08-17  1:04 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-11 15:52 [PATCH V2] blk-mq: don't grab rq's refcount in blk_mq_check_expired() Ming Lei
2021-08-12  8:55 ` Christoph Hellwig
2021-08-12  9:40 ` John Garry
2021-08-17  1:03 ` Ming Lei [this message]
2021-08-17 14:33 ` Jens Axboe

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