linux-kernel - Re: [PATCH] um: Use swap() instead of open coding it

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Date:   Wed, 22 Nov 2023 08:25:54 +0100
From:   Johannes Berg <johannes@...solutions.net>
To:     Jiapeng Chong <jiapeng.chong@...ux.alibaba.com>, richard@....at
Cc:     anton.ivanov@...bridgegreys.com, linux-um@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Abaci Robot <abaci@...ux.alibaba.com>
Subject: Re: [PATCH] um: Use swap() instead of open coding it

On Wed, 2023-11-22 at 11:25 +0800, Jiapeng Chong wrote:
> Swap is a function interface that provides exchange function. To avoid
> code duplication, we can use swap function.
> 
> ./arch/um/os-Linux/sigio.c:81:28-29: WARNING opportunity for swap().
> 

Hm. There's already a use of swap() here in this file, but I actually
think we should revert that? This is basically userspace code, not
kernel code, so I don't think it should include linux headers, even if
those happen to be "standalone enough" right now to work.

johannes