linux-kernel - Re: [PATCH] nommu: fix kobjsize() for SLOB and SLUB

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Message-ID: <483DBFC3.1070108@cs.helsinki.fi>
Date:	Wed, 28 May 2008 23:25:39 +0300
From:	Pekka Enberg <penberg@...helsinki.fi>
To:	Christoph Lameter <clameter@....com>
CC:	Paul Mundt <lethal@...ux-sh.org>,
	LKML <linux-kernel@...r.kernel.org>, cooloney@...nel.org,
	akpm@...ux-foundation.org, dhowells@...hat.com, mpm@...enic.com
Subject: Re: [PATCH] nommu: fix kobjsize() for SLOB and SLUB

Christoph Lameter wrote:
>> We use kobjsize() for pointers returned from do_mmap() which is why I kept the
>> page->index case. Are we using PageCompound for those as well?
> 
> What does do_mmap have to do with page->index?

I don't know how the nommu code is supposed to work. I simply assumed it 
has a reason for being there and that compound_order() is not enough to 
handle that.
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