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Date:   Wed, 22 Apr 2020 15:41:38 +0900
From:   Joonsoo Kim <js1304@gmail.com>
To:     Johannes Weiner <hannes@cmpxchg.org>
Cc:     Alex Shi <alex.shi@linux.alibaba.com>,
        Shakeel Butt <shakeelb@google.com>,
        Hugh Dickins <hughd@google.com>,
        Michal Hocko <mhocko@suse.com>,
        "Kirill A. Shutemov" <kirill@shutemov.name>,
        Roman Gushchin <guro@fb.com>, linux-mm@kvack.org,
        cgroups@vger.kernel.org, linux-kernel@vger.kernel.org,
        kernel-team@fb.com
Subject: Re: [PATCH 07/18] mm: memcontrol: prepare move_account for removal
 of private page type counters
Message-ID: <20200422064138.GG6780@js1304-desktop>
References: <20200420221126.341272-1-hannes@cmpxchg.org>
 <20200420221126.341272-8-hannes@cmpxchg.org>
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On Mon, Apr 20, 2020 at 06:11:15PM -0400, Johannes Weiner wrote:
> When memcg uses the generic vmstat counters, it doesn't need to do
> anything at charging and uncharging time. It does, however, need to
> migrate counts when pages move to a different cgroup in move_account.
> 
> Prepare the move_account function for the arrival of NR_FILE_PAGES,
> NR_ANON_MAPPED, NR_ANON_THPS etc. by having a branch for files and a
> branch for anon, which can then divided into sub-branches.
> 
> Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>

Reviewed-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>