linux-kernel - Re: [PATCH] mm/memcontrol: update lruvec counters in mem_cgroup_move

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Message-ID: <20191015135348.GA139269@cmpxchg.org>
Date:   Tue, 15 Oct 2019 09:53:48 -0400
From:   Johannes Weiner <hannes@...xchg.org>
To:     Konstantin Khlebnikov <khlebnikov@...dex-team.ru>
Cc:     linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>,
        linux-kernel@...r.kernel.org, cgroups@...r.kernel.org,
        Michal Hocko <mhocko@...nel.org>,
        Vladimir Davydov <vdavydov.dev@...il.com>
Subject: Re: [PATCH] mm/memcontrol: update lruvec counters in
 mem_cgroup_move_account

On Tue, Oct 15, 2019 at 11:09:59AM +0300, Konstantin Khlebnikov wrote:
> Mapped, dirty and writeback pages are also counted in per-lruvec stats.
> These counters needs update when page is moved between cgroups.
> 
> Fixes: 00f3ca2c2d66 ("mm: memcontrol: per-lruvec stats infrastructure")
> Signed-off-by: Konstantin Khlebnikov <khlebnikov@...dex-team.ru>

Acked-by: Johannes Weiner <hannes@...xchg.org>

Please mention in the changelog that currently is nobody *consuming*
the lruvec versions of these counters and that there is no
user-visible effect. Thanks