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Date: Mon, 14 Sep 2009 11:42:15 -0400 (EDT)
From: Christoph Lameter <cl@linux-foundation.org>
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To: Zhu Yi <yi.zhu@intel.com>
cc: Mel Gorman <mel@csn.ul.ie>, "Chatre, Reinette" <reinette.chatre@intel.com>,
       Frans Pop <elendil@planet.nl>, Larry Finger <Larry.Finger@lwfinger.net>,
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       Johannes Berg <johannes@sipsolutions.net>,
       "Abbas, Mohamed" <mohamed.abbas@intel.com>
Subject: Re: iwlagn: order 2 page allocation failures
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On Mon, 14 Sep 2009, Zhu Yi wrote:

> BTW, does SLAB/SLUB guarantee size of multiple PAGE_SIZE __kmalloc()
> allocation align on PAGE_SIZE (or 256 bytes) boundary?

Page allocators guarantee page aligned data. Slab allocators do not.

You can create a slab that aligns objects on 256 byte boundary if you
want.


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