| Date | Tue, 21 Jun 2016 15:32:06 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH 16/27] mm: Move page mapped accounting to the node |
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On Tue, 21 Jun 2016 15:15:55 +0100 Mel Gorman <mgorman@techsingularity.net> wrote:
> Reclaim makes decisions based on the number of pages that are mapped > but it's mixing node and zone information. Account NR_FILE_MAPPED and > NR_ANON_PAGES pages on the node.
<wading through rejects>
Boy, the difference between
__mod_zone_page_state(page_zone(page), ...
and
__mod_node_page_state(page_pgdat(page), ...
is looking subtle. When and why to use one versus the other. I'm not seeing any explanation of this in there but haven't yet looked hard.
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