linux-kernel - Re: [PATCH -v2] mm: frontswap: fix a wrong if condition in frontswap

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Message-ID: <1348908118.1553.23.camel@x61.thuisdomein>
Date:	Sat, 29 Sep 2012 10:41:58 +0200
From:	Paul Bolle <pebolle@...cali.nl>
To:	zhenzhong.duan@...cle.com
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-mm@...ck.org, Dan Magenheimer <dan.magenheimer@...cle.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	levinsasha928@...il.com, Feng Jin <joe.jin@...cle.com>,
	dan.carpenter@...cle.com
Subject: Re: [PATCH -v2] mm: frontswap: fix a wrong if condition in
 frontswap_shrink

On Sat, 2012-09-29 at 10:54 +0800, Zhenzhong Duan wrote:
> On 2012-09-28 22:54, Paul Bolle wrote:
> > Not even before applying your patch? Anyhow, after applying your patch
> > the warnings gone here too.
> I tested both cases, no warning, also didn't see -Wmaybe-uninitialized 
> when make.
> My env is el5. gcc version 4.1.2 20080704 (Red Hat 4.1.2-52)
> Maybe your gcc built in/implicit spec use that option?

I simply use what (was and) is shipped by Fedora 17:
    $ sudo grep -w gcc /var/log/yum.log 
    Sep 12 11:45:54 Installed: gcc-4.7.0-5.fc17.x86_64
    Sep 27 13:54:24 Updated: gcc-4.7.2-2.fc17.x86_64

So I did my patch with a version of GCC's release 4.7.0, and tested your
patch with a version of GCC's 4.7.2 release.

I don't think I tweaked any settings. Unless there are strong reasons to
do otherwise, I try to use the tools shipped by Fedora in their default
settings. (I'm not even sure there's a way to set one's GCC settings
locally.)


Paul Bolle

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