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    SubjectRe: [PATCH 05/11] Export unusable free space index via /proc/unusable_index
    > Unusable free space index is a measure of external fragmentation that
    > takes the allocation size into account. For the most part, the huge page
    > size will be the size of interest but not necessarily so it is exported
    > on a per-order and per-zone basis via /proc/unusable_index.
    > The index is a value between 0 and 1. It can be expressed as a
    > percentage by multiplying by 100 as documented in
    > Documentation/filesystems/proc.txt.
    > Signed-off-by: Mel Gorman <>
    > Reviewed-by: Minchan Kim <>
    > Acked-by: Rik van Riel <>


    Reviewed-by: KOSAKI Motohiro <>

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