linux-kernel - Re: [PATCH -mm] cgroups: fix failure path in cgroup_write_event

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Message-ID: <6599ad831002240806p69fcbc01l1173dd2ad971dac9@mail.gmail.com>
Date:	Wed, 24 Feb 2010 08:06:20 -0800
From:	Paul Menage <menage@...gle.com>
To:	"Kirill A. Shutemov" <kirill@...temov.name>
Cc:	Li Zefan <lizf@...fujitsu.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	LKML <linux-kernel@...r.kernel.org>,
	"containers@...ts.osdl.org" <containers@...ts.osdl.org>
Subject: Re: [PATCH -mm] cgroups: fix failure path in cgroup_write_event_control()

On Wed, Feb 24, 2010 at 5:28 AM, Kirill A. Shutemov
<kirill@...temov.name> wrote:
>>
>> Using a single goto label to cleanup multi failure paths can
>> get things wrong quite easily, while multi labels makes the
>> code cleaner.
>
> I disagree.
> It's easer to make mistake on changing code with multi failure
> paths, if you want to move a code within function.

I'm on Kirill's side here. Being able to have a single "cleanup
everything" error path makes the code a lot more maintainable. It may
be inappropriate for really performance-critical functions, but that's
not the case here.

Paul
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