linux-kernel - Re: [PATCH 1/3] mm,slub,x86: decouple size of struct page from CONFIG_CMPXCHG

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Message-ID: <alpine.DEB.2.00.1111100900010.19196@router.home>
Date:	Thu, 10 Nov 2011 09:00:16 -0600 (CST)
From:	Christoph Lameter <cl@...ux.com>
To:	Heiko Carstens <heiko.carstens@...ibm.com>
cc:	Pekka Enberg <penberg@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jeff Dike <jdike@...toit.com>, Ingo Molnar <mingo@...e.hu>,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] mm,slub,x86: decouple size of struct page from
 CONFIG_CMPXCHG_LOCAL

On Thu, 10 Nov 2011, Heiko Carstens wrote:

> If an architecture supports CMPXCHG_LOCAL this shouldn't result automatically
> in larger struct pages if the SLUB allocator is used. Instead introduce a new
> config option "HAVE_ALIGNED_STRUCT_PAGE" which can be selected if a double
> word aligned struct page is required.
> Also update x86 Kconfig so that it should work as before.

Acked-by: Christoph Lameter <cl@...ux.com>
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