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

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Date:	Thu, 22 May 2008 17:04:34 -0700 (PDT)
From:	Christoph Lameter <clameter@....com>
To:	Paul Mundt <lethal@...ux-sh.org>
cc:	Pekka J Enberg <penberg@...helsinki.fi>, dhowells@...hat.com,
	mpm@...enic.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] nommu: fix kobjsize() for SLOB and SLUB

On Fri, 23 May 2008, Paul Mundt wrote:

> Ah, so it does. In that case, we still need to kill off the page->index
> BUG_ON() bits, while PageCompound() will take care of the compound order
> bits that the page->index shifting seems to have been trying to
> implement, the BUG_ON() will still trigger for PAGE_SIZE page cache
> pages.

Yes. I have no idea what the page->index check does there. The compound 
page order is not stored in the index field.
 
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