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    Subject[PATCH 0/5] Lumpy Reclaim V4
    Date
    Following this email are five patches which represent the current
    state of the lumpy reclaim patches; collectivly lumpy v4. This
    patch kit is designed as a complete drop-in replacement for the
    lumpy patches in 2.6.20-mm2. This stack is split out to show the
    incremental changes in this version. Andrew please replace your
    current lumpy stack with this one, you may prefer to fold this kit
    into a single patch lumpy-v4.

    Comparitive testing between lumpy-v3 and lump-v4 generally shows a
    small improvement, coming from the improved matching of pages taken
    from the end of the active/inactive list (patch 2 in this series).

    I have taken the lumpy-v2 patches and fixes as found in
    2.6.20-rc6-mm2 and folded them back into a single patch (collectivly
    lumpy v3), updating attribution. On top of this are are four patches
    which represent the updates mainly coming from the detailed review
    comments from Andrew Morton:

    lumpy-reclaim-v3: folded back base, lumpy-v3,

    lumpy-isolate_lru_pages-wants-to-specifically-take-active-or-inactive-pages:
    ensure we take pages of the expected type from the end of
    the active/ inactive lists. This is both a performance and
    correctness fix,

    lumpy-ensure-that-we-compare-PageActive-and-active-safely: ensure
    comparisons between PageActive() and coded booleans are safe
    should PageActive() not return 1/0,

    lumpy-update-commentry-on-subtle-comparisons-and-rounding-assumptions:
    update the code commentary to explain the subtle exit conditions, and

    lumpy-only-check-for-valid-pages-when-holes-are-present:
    remove expensive check for invalid pages within MAX_ORDER blocks
    where those cannot exist.

    Against: 2.6.20-mm2

    -apw
    -
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