From: Jens Axboe <axboe@kernel.dk>
To: Yu Kuai <yukuai3@huawei.com>, tj@kernel.org, bo.liu@linux.alibaba.com
Cc: cgroups@vger.kernel.org, linux-block@vger.kernel.org,
linux-kernel@vger.kernel.org, yi.zhang@huawei.com
Subject: Re: [PATCH] blk-iolatency: error out if blk_get_queue() failed in iolatency_set_limit()
Date: Thu, 5 Aug 2021 11:18:29 -0600 [thread overview]
Message-ID: <cb9833b1-be92-1b52-86cb-a45a85b18c00@kernel.dk> (raw)
In-Reply-To: <20210805124645.543797-1-yukuai3@huawei.com>
On 8/5/21 6:46 AM, Yu Kuai wrote:
> If queue is dying while iolatency_set_limit() is in progress,
> blk_get_queue() won't increment the refcount of the queue. However,
> blk_put_queue() will still decrement the refcount later, which will
> cause the refcout to be unbalanced.
>
> Thus error out in such case to fix the problem.
Applied, thanks.
--
Jens Axboe
prev parent reply other threads:[~2021-08-05 17:18 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-05 12:46 [PATCH] blk-iolatency: error out if blk_get_queue() failed in iolatency_set_limit() Yu Kuai
2021-08-05 17:17 ` Tejun Heo
2021-08-05 17:18 ` Jens Axboe [this message]
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