Re: [PATCH 05/17] mm: page_alloc: Only check the zone id check if pages are buddies

[Rik van Riel]

On 05/01/2014 04:44 AM, Mel Gorman wrote:
> A node/zone index is used to check if pages are compatible for merging
> but this happens unconditionally even if the buddy page is not free. Defer
> the calculation as long as possible. Ideally we would check the zone boundary
> but nodes can overlap.
> 
> Signed-off-by: Mel Gorman <mgorman@xxxxxxx>
> Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx>

Acked-by: Rik van Riel <riel@xxxxxxxxxx>

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