Subject: Re: [RFC PATCH 0/3] Fix SLQB on memoryless configurations V2
From: Pekka Enberg <penberg@cs.helsinki.fi>
To: Mel Gorman <mel@csn.ul.ie>
Cc: Christoph Lameter <cl@linux-foundation.org>, Nick Piggin <npiggin@suse.de>,
       heiko.carstens@de.ibm.com, sachinp@in.ibm.com,
       linux-kernel@vger.kernel.org, linux-mm@kvack.org,
       Tejun Heo <tj@kernel.org>,
       Benjamin Herrenschmidt <benh@kernel.crashing.org>
In-Reply-To: <20090922100540.GD12254@csn.ul.ie>
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Date: Tue, 22 Sep 2009 13:21:15 +0300
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Hi Mel,

On Tue, 2009-09-22 at 11:05 +0100, Mel Gorman wrote:
> I'm going to punt the decision on this one to Pekka or Nick. My feeling
> is leave it enabled for NUMA so it can be identified if it gets fixed
> for some other reason - e.g. the stalls are due to a per-cpu problem as
> stated by Sachin and SLQB happens to exasperate the problem.

Can I have a tested patch that uses MAX_NUMNODES to allocate the
structs, please? We can convert SLQB over to per-cpu allocator if the
memoryless node issue is resolved.

			Pekka

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