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From: Christoph Hellwig <hch@lst.de>
To: Hou Tao <houtao1@huawei.com>
Cc: Christoph Hellwig <hch@lst.de>,
	Josef Bacik <josef@toxicpanda.com>, Jens Axboe <axboe@kernel.dk>,
	linux-block@vger.kernel.org, nbd@other.debian.org
Subject: Re: [PATCH v2 3/3] nbd: fix race between nbd_alloc_config() and module removal
Date: Mon, 13 Sep 2021 17:25:58 +0200	[thread overview]
Message-ID: <20210913152558.GA3998@lst.de> (raw)
In-Reply-To: <6434d4e8-984d-97df-34e5-b86a0e69cf58@huawei.com>

On Mon, Sep 13, 2021 at 12:32:37PM +0800, Hou Tao wrote:
> > Did you try just removing the extra module refcounting?
> Yes, removing the module refcounting in nbd_alloc_config() and cleaning
> the nbd_config in nbd_cleanup() also work, but not sure whether or not
> it will break some nbd user-case which depends on the extra module
> reference count. I prefer to keep the extra module refcounting considering
> that loop driver does it as well, so what is your suggestion ?

Can you respin the patch with a comment explaining this in detail
so that the next person tripping over it doesn't have to do the research
again?

  reply	other threads:[~2021-09-13 15:26 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-04 12:25 [PATCH v2 0/3] fix races between nbd setup and module removal Hou Tao
2021-09-04 12:25 ` [PATCH v2 1/3] nbd: use pr_err to output error message Hou Tao
2021-09-06  9:27   ` Christoph Hellwig
2021-09-04 12:25 ` [PATCH v2 2/3] nbd: call genl_unregister_family() first in nbd_cleanup() Hou Tao
2021-09-06  9:27   ` Christoph Hellwig
2021-09-04 12:25 ` [PATCH v2 3/3] nbd: fix race between nbd_alloc_config() and module removal Hou Tao
2021-09-06  9:30   ` Christoph Hellwig
2021-09-06 10:08     ` Hou Tao
2021-09-06 10:25       ` Christoph Hellwig
2021-09-07  3:04         ` Hou Tao
2021-09-08 13:03           ` Hou Tao
2021-09-09  6:40           ` Christoph Hellwig
2021-09-13  4:32             ` Hou Tao
2021-09-13 15:25               ` Christoph Hellwig [this message]
2021-09-14 11:42               ` Wouter Verhelst

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