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    SubjectRe: [PATCH 14/43] mm: mempolicy: Use _PAGE_NUMA to migrate pages
    On 11/16/2012 06:22 AM, Mel Gorman wrote:
    > Note: Based on "mm/mpol: Use special PROT_NONE to migrate pages" but
    > sufficiently different that the signed-off-bys were dropped
    >
    > Combine our previous _PAGE_NUMA, mpol_misplaced and migrate_misplaced_page()
    > pieces into an effective migrate on fault scheme.
    >
    > Note that (on x86) we rely on PROT_NONE pages being !present and avoid
    > the TLB flush from try_to_unmap(TTU_MIGRATION). This greatly improves the
    > page-migration performance.
    >
    > Based-on-work-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
    > Signed-off-by: Mel Gorman <mgorman@suse.de>

    Reviewed-by: Rik van Riel <riel@redhat.com>

    (this is getting easier, I must have reviewed this code 4x now)

    --
    All rights reversed


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