| Subject | Re: [PATCH 27/34] mm, vmscan: Have kswapd reclaim from all zones if reclaiming and buffer_heads_over_limit | From | Vlastimil Babka <> | Date | Thu, 14 Jul 2016 14:54:27 +0200 |
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On 07/08/2016 11:35 AM, Mel Gorman wrote: > The buffer_heads_over_limit limit in kswapd is inconsistent with direct > reclaim behaviour. It may force an an attempt to reclaim from all zones and > then not reclaim at all because higher zones were balanced than required > by the original request. > > This patch will causes kswapd to consider reclaiming from all zones if > buffer_heads_over_limit. However, if there are eligible zones for the > allocation request that woke kswapd then no reclaim will occur even if > buffer_heads_over_limit. This avoids kswapd over-reclaiming just because > buffer_heads_over_limit. > > Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
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