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Message-Id: <1187970572.5869.10.camel@localhost>
Date:	Fri, 24 Aug 2007 11:49:31 -0400
From:	Lee Schermerhorn <Lee.Schermerhorn@...com>
To:	Mel Gorman <mel@...net.ie>
Cc:	Yasunori Goto <y-goto@...fujitsu.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>,
	"Luck, Tony" <tony.luck@...el.com>, Jeremy Higdon <jeremy@....com>,
	Andi Kleen <ak@...e.de>, linux-kernel@...r.kernel.org,
	Balbir Singh <balbir@...ux.vnet.ibm.com>,
	linux-ia64@...r.kernel.org, Christoph Lameter <clameter@....com>,
	linux-mm@...ck.org
Subject: Re: [PATCH] Fix find_next_best_node (Re: [BUG] 2.6.23-rc3-mm1
	Kernel panic - not syncing: DMA: Memory would be corrupted)

On Fri, 2007-08-24 at 15:52 +0100, Mel Gorman wrote:
> On (24/08/07 15:53), Yasunori Goto didst pronounce:
> > 
> > I found find_next_best_node() was wrong.
> > I confirmed boot up by the following patch.
> > Mel-san, Kamalesh-san, could you try this?
> > 
> 
> This boots the IA-64 successful and gets rid of that DMA corrupts
> memory message. As a bonus, it fixes up the memoryless nodes (the bug
> where Total pages == 0 and there is a BUG in page_alloc.c) by building
> zonelists properly. The machine still fails to boot with the more familiar
> net/core/skbuff.c:95 but that is a separate problem.
> 
> Well spotted Yasunori-san.
> 
> Andrew, this fixes a real problem and should be considered a fix to
> memoryless-nodes-fixup-uses-of-node_online_map-in-generic-code.patch unless
> Christoph Lameter objects.

I reworked that patch and posted the update on 16aug which does not have
this problem:

http://marc.info/?l=linux-mm&m=118729871101418&w=4

This should replace
memoryless-nodes-fixup-uses-of-node_online_map-in-generic-code.patch
in -mm.

Lee


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