On Tue, Jul 26, 2016 at 10:21:57AM +0900, Minchan Kim wrote: > > > I believe proper fix is to modify get_scan_count. IOW, I think > > > we should introduce lruvec_reclaimable_lru_size with proper > > > classzone_idx but I don't know how we can fix it with memcg > > > which doesn't have zone stat now. should introduce zone stat > > > back to memcg? Or, it's okay to ignore memcg? > > > > > > > I think it's ok to ignore memcg in this case as a memcg shrink is often > > going to be for pages that can use highmem anyway. > > So, you mean it's okay to ignore kmemcg case? > If memcg guys agree it, I want to make get_scan_count consider > reclaimable lru size under the reclaim constraint, instead. >
For now, I believe yet. My understanding is that the primary use cases for kmemcg is systems running large numbers of containers. It consider it extremely unlikely that large 32-bit systems are being used for large numbers of containers and require usage of kmemcg. -- Mel Gorman SUSE Labs
