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From: KOSAKI Motohiro on 16 Mar 2010 22:50
> 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 <mel(a)csn.ul.ie>
> Reviewed-by: Minchan Kim <minchan.kim(a)gmail.com>
> Acked-by: Rik van Riel <riel(a)redhat.com>

thanks.

Reviewed-by: KOSAKI Motohiro <kosaki.motohiro(a)jp.fujitsu.com>



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