The patch titled Subject: mm: vmscan: consistent update to pgrefill has been added to the -mm tree. Its filename is mm-vmscan-consistent-update-to-pgrefill.patch This patch should soon appear at http://ozlabs.org/~akpm/mmots/broken-out/mm-vmscan-consistent-update-to-pgrefill.patch and later at http://ozlabs.org/~akpm/mmotm/broken-out/mm-vmscan-consistent-update-to-pgrefill.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Shakeel Butt <shakeelb@xxxxxxxxxx> Subject: mm: vmscan: consistent update to pgrefill The vmstat pgrefill is useful together with pgscan and pgsteal stats to measure the reclaim efficiency. However vmstat's pgrefill is not updated consistently at system level. It gets updated for both global and memcg reclaim however pgscan and pgsteal are updated for only global reclaim. So, update pgrefill only for global reclaim. If someone is interested in the stats representing both system level as well as memcg level reclaim, then consult the root memcg's memory.stat instead of /proc/vmstat. Link: http://lkml.kernel.org/r/20200711011459.1159929-1-shakeelb@xxxxxxxxxx Signed-off-by: Shakeel Butt <shakeelb@xxxxxxxxxx> Acked-by: Yafang Shao <laoar.shao@xxxxxxxxx> Acked-by: Roman Gushchin <guro@xxxxxx> Acked-by: Chris Down <chris@xxxxxxxxxxxxxx> Cc: Johannes Weiner <hannes@xxxxxxxxxxx> Cc: Michal Hocko <mhocko@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/vmscan.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/mm/vmscan.c~mm-vmscan-consistent-update-to-pgrefill +++ a/mm/vmscan.c @@ -2030,7 +2030,8 @@ static void shrink_active_list(unsigned __mod_node_page_state(pgdat, NR_ISOLATED_ANON + file, nr_taken); - __count_vm_events(PGREFILL, nr_scanned); + if (!cgroup_reclaim(sc)) + __count_vm_events(PGREFILL, nr_scanned); __count_memcg_events(lruvec_memcg(lruvec), PGREFILL, nr_scanned); spin_unlock_irq(&pgdat->lru_lock); _ Patches currently in -mm which might be from shakeelb@xxxxxxxxxx are mm-memcontrol-account-kernel-stack-per-node.patch mm-vmscan-consistent-update-to-pgrefill.patch