linux-kernel - Re: [patch 2/2] slab: always consider arch mandated alignment

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Message-ID: <44C7C261.6050602@colorfullife.com>
Date:	Wed, 26 Jul 2006 21:28:33 +0200
From:	Manfred Spraul <manfred@...orfullife.com>
To:	Christoph Lameter <clameter@....com>
CC:	Pekka J Enberg <penberg@...helsinki.fi>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	Andrew Morton <akpm@...l.org>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, Martin Schwidefsky <schwidefsky@...ibm.com>
Subject: Re: [patch 2/2] slab: always consider arch mandated alignment

Christoph Lameter wrote:

>So Redzoning etc will now be diabled regardless even if  
>ARCH_SLAB_MINALIGN is not set but another alignment is given to 
>kmem_cache_alloc?
>  
>
kmem_cache_create().

>So we sacrifice the ability to worsen the performance of slabs by 
>misaligning them for debugging purposes.
>  
>
If a slab user can live with misaligned objects, then he shouldn't set 
align. Thus we do not sacrifice anything.

--
    Manfred
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