linux-kernel - Re: [PATCH] mm: memcg: use rstat for non-hierarchical stats

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Message-Id: <20230725104310.ac652a03ab92357a162b1f92@linux-foundation.org>
Date:   Tue, 25 Jul 2023 10:43:10 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Johannes Weiner <hannes@...xchg.org>
Cc:     Yosry Ahmed <yosryahmed@...gle.com>,
        Michal Hocko <mhocko@...nel.org>,
        Roman Gushchin <roman.gushchin@...ux.dev>,
        Shakeel Butt <shakeelb@...gle.com>,
        Muchun Song <muchun.song@...ux.dev>,
        linux-kernel@...r.kernel.org, cgroups@...r.kernel.org,
        linux-mm@...ck.org
Subject: Re: [PATCH] mm: memcg: use rstat for non-hierarchical stats

On Tue, 25 Jul 2023 10:04:35 -0400 Johannes Weiner <hannes@...xchg.org> wrote:

> > Signed-off-by: Yosry Ahmed <yosryahmed@...gle.com>
> 
> Acked-by: Johannes Weiner <hannes@...xchg.org>
> 
> But I want to be clear: this isn't a regression fix. It's a new
> performance optimization for the deprecated cgroup1 code. And it comes
> at the cost of higher memory footprint for both cgroup1 AND cgroup2.

Thanks.

Yosry, could you please send along a suitably modified changelog?