linux-kernel - Re: [PATCH] mm/slob: avoid type warning about alignment value

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Message-Id: <201207110639.43587.arnd@arndb.de>
Date:	Wed, 11 Jul 2012 06:39:43 +0000
From:	Arnd Bergmann <arnd@...db.de>
To:	David Rientjes <rientjes@...gle.com>
Cc:	Pekka Enberg <penberg@...nel.org>,
	Christoph Lameter <cl@...ux.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Matt Mackall <mpm@...enic.com>, linux-mm@...ck.org
Subject: Re: [PATCH] mm/slob: avoid type warning about alignment value

On Wednesday 11 July 2012, David Rientjes wrote:
> Wouldn't it be better to avoid this problem more generally by casting the 
> __alignof__ for ARCH_{KMALLOC,SLAB}_MINALIGN to int in slab.h?  All 
> architectures that define these themselves will be using plain integers, 
> the problem is __alignof__ returning size_t when undefined.

I thought about it but I wasn't sure if that would cover all possible
cases. My version at least is known not to introduce a different type
mismatch on another architecture.

Also, size_t seems to be the correct type here, while the untyped
definition is just an int.

	Arnd
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