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Re: [PATCH 1/2] mm, vmscan: consider isolated pages in zone_reclaimable_pages

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On Tue, Nov 24, 2015 at 12:54:59PM +0100, Michal Hocko wrote:
> From: Michal Hocko <mhocko@suse.com>
> 
> zone_reclaimable_pages counts how many pages are reclaimable in
> the given zone. This currently includes all pages on file lrus and
> anon lrus if there is an available swap storage. We do not consider
> NR_ISOLATED_{ANON,FILE} counters though which is not correct because
> these counters reflect temporarily isolated pages which are still
> reclaimable because they either get back to their LRU or get freed
> either by the page reclaim or page migration.
> 
> The number of these pages might be sufficiently high to confuse users of
> zone_reclaimable_pages (e.g. mbind can migrate large ranges of memory at
> once).
> 
> Suggested-by: Johannes Weiner <hannes@cmpxchg.org>
> Signed-off-by: Michal Hocko <mhocko@suse.com>

Acked-by: Johannes Weiner <hannes@cmpxchg.org>
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[PATCH 0/2] 2 zone_pages_reclaimable fixes Michal Hocko <mhocko@kernel.org> - 2015-11-24 13:00 +0100
  [PATCH 2/2] mm, vmscan: do not overestimate anonymous reclaimable pages Michal Hocko <mhocko@kernel.org> - 2015-11-24 13:00 +0100
    Re: [PATCH 2/2] mm, vmscan: do not overestimate anonymous  reclaimable pages Vladimir Davydov <vdavydov@virtuozzo.com> - 2015-11-24 14:10 +0100
      Re: [PATCH 2/2] mm, vmscan: do not overestimate anonymous  reclaimable pages Michal Hocko <mhocko@kernel.org> - 2015-11-24 14:40 +0100
  [PATCH 1/2] mm, vmscan: consider isolated pages in zone_reclaimable_pages Michal Hocko <mhocko@kernel.org> - 2015-11-24 13:00 +0100
    Re: [PATCH 1/2] mm, vmscan: consider isolated pages in  zone_reclaimable_pages Vladimir Davydov <vdavydov@virtuozzo.com> - 2015-11-24 15:00 +0100
    Re: [PATCH 1/2] mm, vmscan: consider isolated pages in  zone_reclaimable_pages Johannes Weiner <hannes@cmpxchg.org> - 2015-11-24 17:10 +0100
    Re: [PATCH 1/2] mm, vmscan: consider isolated pages in  zone_reclaimable_pages David Rientjes <rientjes@google.com> - 2015-11-25 12:10 +0100

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