linux-kernel - Re: [2.6.20][PATCH] fix mempolicy error check on a system with memory-less-node

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Message-ID: <p73ejp2mfqh.fsf@bingen.suse.de>
Date:	07 Feb 2007 11:20:06 +0100
From:	Andi Kleen <ak@...e.de>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	LKML <linux-kernel@...r.kernel.org>, GOTO <y-goto@...fujitsu.com>,
	Christoph Lameter <clameter@...r.sgi.com>,
	Andrew Morton <akpm@...l.org>
Subject: Re: [2.6.20][PATCH] fix mempolicy error check on a system with memory-less-node

KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com> writes:

> current mempolicy just checks whether a node is online or not.
> If there is memory-less-node, mempolicy's target node can be
> invalid.
> This patch adds a check whether a node has memory or not.

IMHO there shouldn't be any memory less nodes. The architecture code
should not create them. The CPU should be assigned to a nearby node instead.
At least x86-64 ensures that.

-Andi
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