linux-kernel - Re: [GIT PULL v2] Early SLAB fixes for 2.6.31

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Date:	Tue, 16 Jun 2009 07:32:47 +1000
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Nick Piggin <npiggin@...e.de>
Cc:	Pekka Enberg <penberg@...helsinki.fi>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	torvalds@...ux-foundation.org, linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org, cl@...ux-foundation.org,
	kamezawa.hiroyu@...fujitsu.com, lizf@...fujitsu.com, mingo@...e.hu,
	yinghai@...nel.org
Subject: Re: [GIT PULL v2] Early SLAB fixes for 2.6.31

On Mon, 2009-06-15 at 13:28 +0200, Nick Piggin wrote:
> If a couple of specialised early boot code places have
> to test slab_is_available() to prevent crap leaking into
> our main allocators, then that's quite fine by me.

slab_is_available() will not fix the problem in that case. In fact,
 existing tests of slab_is_available() have been broken because they
assumed that when it was true, then GFP_KERNEL would work.

Ben.


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