linux-kernel - Re: [PATCH] virtio_blk: fix race at module removal

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Message-ID: <8761f5avmn.fsf@rustcorp.com.au>
Date:	Tue, 28 Oct 2014 10:55:04 +1030
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	Ming Lei <tom.leiming@...il.com>,
	"Michael S. Tsirkin" <mst@...hat.com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux Virtualization <virtualization@...ts.linux-foundation.org>
Subject: Re: [PATCH] virtio_blk: fix race at module removal

Ming Lei <tom.leiming@...il.com> writes:
> On Fri, Oct 24, 2014 at 12:12 AM, Michael S. Tsirkin <mst@...hat.com> wrote:
>> If a device appears while module is being removed,
>> driver will get a callback after we've given up
>> on the major number.
>>
>> In theory this means this major number can get reused
>> by something else, resulting in a conflict.
>
> Yes, there is a tiny race window.

Applied.

Thanks,
Rusty.
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