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    SubjectRe: [PATCH 0/8] Use memory compaction instead of lumpy reclaim during high-order allocations
    On Thu, 18 Nov 2010 09:20:44 +0000
    Mel Gorman <mel@csn.ul.ie> wrote:

    > > It's because migration depends on MMU. But we should be able to make
    > > a NOMMU version of migration that just does page cache, which is all
    > > that is reclaimable on NOMMU anyway.
    > >
    >
    > Conceivably, but I see little problem leaving them with lumpy reclaim.

    I see a really big problem: we'll need to maintain lumpy reclaim for
    ever!

    We keep on piling in more and more stuff, we're getting less sure that
    the old stuff is still effective. It's becoming more and more
    important to move some of our attention over to simplification, and
    to rejustification of earlier decisions.



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