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SubjectRe: [PATCH 29/34] mm, page_alloc: remove fair zone allocation policy
On Fri, Jul 08, 2016 at 10:35:05AM +0100, Mel Gorman wrote:
> The fair zone allocation policy interleaves allocation requests between
> zones to avoid an age inversion problem whereby new pages are reclaimed to
> balance a zone. Reclaim is now node-based so this should no longer be an
> issue and the fair zone allocation policy is not free. This patch removes
> it.
>
> Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
> Acked-by: Vlastimil Babka <vbabka@suse.cz>

It's indeed no longer needed with a single set of LRUs on each NUMA
node. I'm glad this wart is finally going. Thanks Mel.

Acked-by: Johannes Weiner <hannes@cmpxchg.org>

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