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    SubjectRe: [PATCH 04/12] Export fragmentation index via /proc/pagetypeinfo
    On 02/12/2010 07:00 AM, Mel Gorman wrote:
    > Fragmentation index is a value that makes sense when an allocation of a
    > given size would fail. The index indicates whether an allocation failure is
    > due to a lack of memory (values towards 0) or due to external fragmentation
    > (value towards 1). 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/pagetypeinfo.
    >
    > The index is normally calculated as a value between 0 and 1 which is
    > obviously unsuitable within the kernel. Instead, the first three decimal
    > places are used as a value between 0 and 1000 for an integer approximation.
    >
    > Signed-off-by: Mel Gorman<mel@csn.ul.ie>

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

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