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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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