linux-kernel - Re: [patch 2/2] enables booting a NUMA system where some nodes have no memory

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Date:	Wed, 15 Nov 2006 18:01:35 -0800
From:	Martin Bligh <mbligh@...igh.org>
To:	Christoph Lameter <clameter@....com>
Cc:	Jack Steiner <steiner@....com>,
	Christian Krafft <krafft@...ibm.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [patch 2/2] enables booting a NUMA system where some nodes have
 no memory

Christoph Lameter wrote:
> On Wed, 15 Nov 2006, Martin Bligh wrote:
> 
>> All we need is an appropriate zonelist for each node, pointing to
>> the memory it should be accessing.
> 
> But there is no memory on the node. Does the zonelist contain the zones of 
> the node without memory or not? We simply fall back each allocation to the 
> next node as if the node was overflowing?

Sure. there's no point in putting an empty zone in the zonelist.
We should just skip anything where present_pages is zero.

M.


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