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Date: Thu, 26 Apr 2007 09:06:17 -0700 (PDT)
From: Christoph Lameter <clameter@sgi.com>
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To: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>, ak@suse.de,
       linux-kernel@vger.kernel.org, linux-mm@kvack.org,
       akpm@linux-foundation.org, Eric Whitney <eric.whitney@hp.com>
Subject: Re: [PATCH] change global zonelist order on NUMA v3
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Hmmmm... One additional easy way to fix this would be to create a DMA 
node and place it very distant to other nodes. This would make it a 
precious system resource that is only used for

1. GFP_DMA allocations

2. If the memory on the other nodes is exhausted.