Re: [PATCH] Fix find_next_best_node (Re: [BUG] 2.6.23-rc3-mm1 Kernel panic - not syncing: DMA: Memory would be corrupted)

[Lee Schermerhorn <Lee.Schermerhorn@hp.com>]

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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