Messages in this thread | | | Date | Mon, 14 Jan 2008 15:28:53 +0000 | From | Mel Gorman <> | Subject | Re: [patch 09/19] (NEW) more aggressively use lumpy reclaim |
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On (08/01/08 14:30), Christoph Lameter didst pronounce: > On Tue, 8 Jan 2008, Rik van Riel wrote: > > > If normal pageout does not result in contiguous free pages for > > kernel stacks, fall back to lumpy reclaim instead of failing fork > > or doing excessive pageout IO. > > Good. Ccing Mel. This is going to help higher order pages which is useful > for a couple of other projects. >
Well, the patch only has any impact when the order you are reclaiming is less than PAGE_ALLOC_COSTLY_ORDER so I would not have considered it of major impact to other projects interested in high order allocations. However, in isolation I have no problem with this patch and I can see how it makes sense for the problem scenario described. I rebased just this patch to 2.6.24-rc7 and found no problems but I have not had the chance to review the whole set.
> Reviewed-by: Christoph Lameter <clameter@sgi.com> >
Acked-by: Mel Gorman <mel@csn.ul.ie>
-- Mel Gorman Part-time Phd Student Linux Technology Center University of Limerick IBM Dublin Software Lab
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