All of lore.kernel.org
 help / color / mirror / Atom feed
From: Ming Lei <ming.lei@redhat.com>
To: Bart Van Assche <bvanassche@acm.org>
Cc: Jens Axboe <axboe@kernel.dk>,
	linux-block@vger.kernel.org, Christoph Hellwig <hch@lst.de>,
	Peter Wang <peter.wang@mediatek.com>,
	Chao Leng <lengchao@huawei.com>,
	stable@vger.kernel.org
Subject: Re: [PATCH] blk-mq: Make blk_mq_quiesce_tagset() hold the tag list mutex less long
Date: Wed, 23 Oct 2024 10:15:43 +0800	[thread overview]
Message-ID: <ZxhcT46a6glC0Db7@fedora> (raw)
In-Reply-To: <20241022181617.2716173-1-bvanassche@acm.org>

On Tue, Oct 22, 2024 at 11:16:17AM -0700, Bart Van Assche wrote:
> Make sure that the tag_list_lock mutex is no longer held than necessary.
> This change reduces latency if e.g. blk_mq_quiesce_tagset() is called
> concurrently from more than one thread. This function is used by the
> NVMe core and also by the UFS driver.
> 
> Reported-by: Peter Wang <peter.wang@mediatek.com>
> Cc: Chao Leng <lengchao@huawei.com>
> Cc: Ming Lei <ming.lei@redhat.com>
> Cc: stable@vger.kernel.org
> Fixes: commit 414dd48e882c ("blk-mq: add tagset quiesce interface")
> Signed-off-by: Bart Van Assche <bvanassche@acm.org>

Reviewed-by: Ming Lei <ming.lei@redhat.com>

Thanks,
Ming


      parent reply	other threads:[~2024-10-23  2:15 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-10-22 18:16 [PATCH] blk-mq: Make blk_mq_quiesce_tagset() hold the tag list mutex less long Bart Van Assche
2024-10-22 20:08 ` Keith Busch
2024-10-22 22:25 ` Jens Axboe
2024-10-23  2:15 ` Ming Lei [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=ZxhcT46a6glC0Db7@fedora \
    --to=ming.lei@redhat.com \
    --cc=axboe@kernel.dk \
    --cc=bvanassche@acm.org \
    --cc=hch@lst.de \
    --cc=lengchao@huawei.com \
    --cc=linux-block@vger.kernel.org \
    --cc=peter.wang@mediatek.com \
    --cc=stable@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.