Re: linux-next: build warning after merge of the akpm tree

From: Arnd Bergmann
Date: Tue Aug 01 2017 - 17:15:53 EST

On Tue, Aug 1, 2017 at 8:15 AM, Huang, Ying <ying.huang@xxxxxxxxx> wrote:
> From 7a7ff76d7bcbd7affda169b29abcf3dafa38052e Mon Sep 17 00:00:00 2001
> From: Huang Ying <ying.huang@xxxxxxxxx>
> Date: Tue, 1 Aug 2017 14:12:21 +0800
> Subject: [PATCH] mm, THP, swap: Silence a compiler warning
> To fix the following compiler warning,
> mm/swapfile.c: In function 'reuse_swap_page':
> mm/swapfile.c:1429:16: warning: 'offset' may be used uninitialized in this function [-Wmaybe-uninitialized]
> unsigned long offset;
> ^
> This is a false positive report, but we should silence it anyway.

Looks ok, I ran into this too, and came to the same conclusion.
I normally try to find a way to reorganize the code without adding
a bogus initialization, but here I could not find come up with anything
better than what you did.