linux-kernel - Re: [PATCH] change global zonelist order v4 [0/2]

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Message-Id: <200705041036.01904.jbarnes@virtuousgeek.org>
Date:	Fri, 4 May 2007 10:36:01 -0700
From:	Jesse Barnes <jbarnes@...tuousgeek.org>
To:	Christoph Lameter <clameter@....com>
Cc:	Lee Schermerhorn <Lee.Schermerhorn@...com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Linux-MM <linux-mm@...ck.org>
Subject: Re: [PATCH] change global zonelist order v4 [0/2]

On Friday, May 04, 2007, Christoph Lameter wrote:
> On Fri, 4 May 2007, Lee Schermerhorn wrote:
> > Hmmm...  "serious hackery", indeed!  ;-)
>
> Maybe on the arch level but minimal changes to core code.
> And it is a step towards avoiding zones in NUMA.

You mentioned that if node 0 has a small ZONE_NORMAL and the ZONE_DMA for 
the system, defaulting to using ZONE_NORMAL on all nodes first would be a 
bad idea.  Is that really true?  Maybe for ZONE_DMA32 it is since that 
first node could have a few gigs of memory, but for regular ZONE_DMA it's 
probably the right thing to do...

So aside from the comment issues Lee already pointed out, I think 
Kamezawa-san's patch from 
http://marc.info/?l=linux-mm&m=117758484122663&w=4 seems reasonable.

Jesse
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