Re: [PATCH 5/3] mm, vmscan: make zone_reclaimable_pages more precise

2016-01-29 Thread Tetsuo Handa
Michal Hocko wrote: > On Fri 29-01-16 19:35:18, Tetsuo Handa wrote: > > Michal Hocko wrote: > > > From: Michal Hocko > > > > > > zone_reclaimable_pages is used in should_reclaim_retry which uses it to > > > calculate the target for the watermark check. This means that precise > > > numbers are im

Re: [PATCH 5/3] mm, vmscan: make zone_reclaimable_pages more precise

2016-01-29 Thread Michal Hocko
On Fri 29-01-16 19:35:18, Tetsuo Handa wrote: > Michal Hocko wrote: > > From: Michal Hocko > > > > zone_reclaimable_pages is used in should_reclaim_retry which uses it to > > calculate the target for the watermark check. This means that precise > > numbers are important for the correct decision.

Re: [PATCH 5/3] mm, vmscan: make zone_reclaimable_pages more precise

2016-01-29 Thread Tetsuo Handa
Michal Hocko wrote: > From: Michal Hocko > > zone_reclaimable_pages is used in should_reclaim_retry which uses it to > calculate the target for the watermark check. This means that precise > numbers are important for the correct decision. zone_reclaimable_pages > uses zone_page_state which can co

Re: [PATCH 5/3] mm, vmscan: make zone_reclaimable_pages more precise

2016-01-28 Thread Hillf Danton
> > From: Michal Hocko > > zone_reclaimable_pages is used in should_reclaim_retry which uses it to > calculate the target for the watermark check. This means that precise > numbers are important for the correct decision. zone_reclaimable_pages > uses zone_page_state which can contain stale data

Re: [PATCH 5/3] mm, vmscan: make zone_reclaimable_pages more precise

2016-01-28 Thread David Rientjes
On Thu, 28 Jan 2016, Michal Hocko wrote: > From: Michal Hocko > > zone_reclaimable_pages is used in should_reclaim_retry which uses it to > calculate the target for the watermark check. This means that precise > numbers are important for the correct decision. zone_reclaimable_pages > uses zone_p

[PATCH 5/3] mm, vmscan: make zone_reclaimable_pages more precise

2016-01-28 Thread Michal Hocko
From: Michal Hocko zone_reclaimable_pages is used in should_reclaim_retry which uses it to calculate the target for the watermark check. This means that precise numbers are important for the correct decision. zone_reclaimable_pages uses zone_page_state which can contain stale data with per-cpu di