From: Jens Axboe <axboe@kernel.dk>
To: yukuai3@huawei.com
Cc: linux-block@vger.kernel.org, yi.zhang@huawei.com,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH RESEND] blk-mq: fix possible creation failure for 'debugfs_dir'
Date: Tue, 19 Apr 2022 20:10:40 -0600 [thread overview]
Message-ID: <165042064016.532249.4832316049346088891.b4-ty@kernel.dk> (raw)
In-Reply-To: <20220415035607.1836495-1-yukuai3@huawei.com>
On Fri, 15 Apr 2022 11:56:07 +0800, Yu Kuai wrote:
> 'q->debugfs_dir' is created in blk_register_queue(), however, it's not
> removed in blk_unregister_queue() and is delayed to blk_release_queue().
> Thus it's possible that del_gendisk() is done and blk_release_queue()
> is not called yet, and in the mean time blk_register_queue() is called
> for the new device with the same name. In this case, kernel will
> compalin about creation failure for 'debugfs_dir' like following:
>
> [...]
Applied, thanks!
[1/1] blk-mq: fix possible creation failure for 'debugfs_dir'
commit: a87c29e1a85e64b28445bb1e80505230bf2e3b4b
Best regards,
--
Jens Axboe
next prev parent reply other threads:[~2022-04-20 2:10 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-15 3:56 [PATCH RESEND] blk-mq: fix possible creation failure for 'debugfs_dir' Yu Kuai
2022-04-20 2:10 ` Jens Axboe [this message]
2022-04-20 3:40 ` Williams, Dan J
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