netdev - Re: [PATCH] VSOCK: make af_vsock.ko removable again

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Date:   Tue, 17 Apr 2018 09:45:12 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     stefanha@...hat.com
Cc:     netdev@...r.kernel.org, xiyou.wangcong@...il.com,
        jhansen@...are.com
Subject: Re: [PATCH] VSOCK: make af_vsock.ko removable again

From: Stefan Hajnoczi <stefanha@...hat.com>
Date: Tue, 17 Apr 2018 14:25:58 +0800

> Commit c1eef220c1760762753b602c382127bfccee226d ("vsock: always call
> vsock_init_tables()") introduced a module_init() function without a
> corresponding module_exit() function.
> 
> Modules with an init function can only be removed if they also have an
> exit function.  Therefore the vsock module was considered "permanent"
> and could not be removed.
> 
> This patch adds an empty module_exit() function so that "rmmod vsock"
> works.  No explicit cleanup is required because:
> 
> 1. Transports call vsock_core_exit() upon exit and cannot be removed
>    while sockets are still alive.
> 2. vsock_diag.ko does not perform any action that requires cleanup by
>    vsock.ko.
> 
> Reported-by: Xiumei Mu <xmu@...hat.com>
> Cc: Cong Wang <xiyou.wangcong@...il.com>
> Cc: Jorgen Hansen <jhansen@...are.com>
> Signed-off-by: Stefan Hajnoczi <stefanha@...hat.com>

Applied, but please provide a proper Fixes: tag next time.  I added it
for you this time.