From: Sasha Levin <sashal@kernel.org>
To: Giuliano Procida <gprocida@google.com>
Cc: gregkh@linuxfoundation.org, stable@vger.kernel.org, axboe@kernel.dk
Subject: Re: [PATCH] blk-mq: move blk_mq_update_nr_hw_queues synchronize_rcu call
Date: Fri, 19 Jun 2020 00:10:48 -0400 [thread overview]
Message-ID: <20200619041048.GW1931@sasha-vm> (raw)
In-Reply-To: <20200618183022.212135-1-gprocida@google.com>
On Thu, Jun 18, 2020 at 07:30:22PM +0100, Giuliano Procida wrote:
>This fixes the
>4.9 backport commit f530afb974c2e82047bd6220303a2dbe30eff304
>which was
>upstream commit f5bbbbe4d63577026f908a809f22f5fd5a90ea1f.
>
>The upstream commit added a call to synchronize_rcu to
>_blk_mq_update_nr_hw_queues, just after freezing queues.
>
>In the backport this landed (in blk_mq_update_nr_hw_queues instead),
>just after unfreezeing queues.
>
>This commit moves the call to its intended place.
>
>Fixes: f530afb974c2 ("blk-mq: sync the update nr_hw_queues with blk_mq_queue_tag_busy_iter")
>Signed-off-by: Giuliano Procida <gprocida@google.com>
Good catch! I've queued this and the 4.14 version.
--
Thanks,
Sasha
prev parent reply other threads:[~2020-06-19 4:10 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-18 18:30 [PATCH] blk-mq: move blk_mq_update_nr_hw_queues synchronize_rcu call Giuliano Procida
2020-06-19 4:10 ` Sasha Levin [this message]
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