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    SubjectRe: [patch 09/19] (NEW) more aggressively use lumpy reclaim
    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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