Query on PGREFILL, PGSCAN and PGSTEAL

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To: Roman Gushchin <guro@xxxxxx>
Subject: Query on PGREFILL, PGSCAN and PGSTEAL
From: Shakeel Butt <shakeelb@xxxxxxxxxx>
Date: Wed, 6 May 2020 07:34:16 -0700
Cc: Michal Hocko <mhocko@xxxxxxxxxx>, Johannes Weiner <hannes@xxxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Linux MM <linux-mm@xxxxxxxxx>

Hi Roman,

The commit 2262185c5b28 ("mm: per-cgroup memory reclaim stats") added
the memcg reclaim stats. However for the global PGSCAN and PGSTEAL
counters it restricts them to be updated only for global reclaim while
the PGREFILL global counter is updated for both global and cgroup
reclaim. Is that intentional?

thanks,
Shakeel

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