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    SubjectRe: [PATCH 2/8] Create the ZONE_MOVABLE zone
    On Thu, 25 Jan 2007, Mel Gorman wrote:

    > @@ -166,6 +168,8 @@ enum zone_type {
    > #define ZONES_SHIFT 1
    > #elif __ZONE_COUNT <= 4
    > #define ZONES_SHIFT 2
    > +#elif __ZONE_COUNT <= 8
    > +#define ZONES_SHIFT 3
    > #else

    You do not need a shift of 3. Even with ZONE_MOVABLE the maximum
    number of zones is still 4.

    x86_64 has DMA, DMA32, NORMAL, MOVABLE
    i386 has DMA, NORMAL, HIGHMEM, MOVABLE

    x86_64 is the only platform that has DMA32.
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