linux-kernel - Re: [RFC/PATCH 1/3] SLAB: Add PageSlab checking to ksize()

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Message-ID: <4834F2E2.3070806@cs.helsinki.fi>
Date:	Thu, 22 May 2008 07:13:22 +0300
From:	Pekka Enberg <penberg@...helsinki.fi>
To:	Paul Mundt <lethal@...ux-sh.org>,
	Pekka J Enberg <penberg@...helsinki.fi>,
	linux-kernel@...r.kernel.org, clameter@....com, mpm@...enic.com,
	dhowells@...hat.com
Subject: Re: [RFC/PATCH 1/3] SLAB: Add PageSlab checking to ksize()

Paul Mundt wrote:
> This series seems to work ok with all of SLAB/SLUB/SLOB when also
> applying the kobjsize() patch. Without the kobjsize() patch in place,
> SLAB and SLUB both work, while SLOB still triggers the >= MAX_ORDER
> BUG_ON() for page cache pages. Note that this is still an improvement
> over SLUB blowing up, as it was before, even without the kobjsize()
> change.

That's probably due to the fact that we use PageSlab for all pages with 
SLUB and for bigblock pages in SLOB with this patch. Christoph, Matt, 
any suggestions how to fix the PageSlab check in nommu btw?

		Pekka
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