linux-kernel - Re: crash in kmem_cache

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Message-ID: <Pine.LNX.4.64.0801221517260.2871@schroedinger.engr.sgi.com>
Date:	Tue, 22 Jan 2008 15:18:52 -0800 (PST)
From:	Christoph Lameter <clameter@....com>
To:	Pekka Enberg <penberg@...helsinki.fi>
cc:	Mel Gorman <mel@....ul.ie>, Olaf Hering <olaf@...fle.de>,
	linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org,
	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
	hanth Aravamudan <nacc@...ibm.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	lee.schermerhorn@...com, Linux MM <linux-mm@...ck.org>,
	akpm@...ux-foundation.org
Subject: Re: crash in kmem_cache_init

On Tue, 22 Jan 2008, Christoph Lameter wrote:

> But I doubt that this is it. The fallback logic was added later and it 
> worked fine.

My patch is useless (fascinating history of the changelog there through). 
fallback_alloc calls kmem_getpages without GFP_THISNODE. This means that 
alloc_pages_node() will try to allocate on the current node but fallback 
to neighboring node if nothing is there....


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