Comment # 37 on bug 1159882 from Michal Hocko

(In reply to Robert Delahunt from comment #36)
> http://www.puresimplicity.net/~delahunt/vmstat/cgroup_disable/

Thanks. The data seem to be in line with what we have seen previously:
                        vmstat.1600781117   1600781118 [diff]
nr_active_anon          166943              -3026
nr_active_file          85576               3
nr_inactive_anon        33207               8180
nr_inactive_file        3540169             9504
nr_dirty                667650              -203
workingset_activate     154                 0
workingset_refault      2455                1
workingset_restore      0                   0
pswpin                  0                   0
pswpout                 2448                3118

The inactive list is really large and mostly clean so there shouldn't be any
reason to swap out. I suspect the reclaim is confused for some reason. Again
anonymous inactive list is low and needs rotation but I fail to see any reason
why it should get reclaimed. get_scan_count should opt for page cache reclaim
only.

Could you give the newer kernel a try as noted in previous comment, please?