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Date:   Tue, 25 Jul 2023 10:43:10 -0700
From:   Andrew Morton <akpm@linux-foundation.org>
To:     Johannes Weiner <hannes@cmpxchg.org>
Cc:     Yosry Ahmed <yosryahmed@google.com>,
        Michal Hocko <mhocko@kernel.org>,
        Roman Gushchin <roman.gushchin@linux.dev>,
        Shakeel Butt <shakeelb@google.com>,
        Muchun Song <muchun.song@linux.dev>,
        linux-kernel@vger.kernel.org, cgroups@vger.kernel.org,
        linux-mm@kvack.org
Subject: Re: [PATCH] mm: memcg: use rstat for non-hierarchical stats
Message-Id: <20230725104310.ac652a03ab92357a162b1f92@linux-foundation.org>
In-Reply-To: <20230725140435.GB1146582@cmpxchg.org>
References: <20230719174613.3062124-1-yosryahmed@google.com>
        <20230725140435.GB1146582@cmpxchg.org>
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On Tue, 25 Jul 2023 10:04:35 -0400 Johannes Weiner <hannes@cmpxchg.org> wrote:

> > Signed-off-by: Yosry Ahmed <yosryahmed@google.com>
> 
> Acked-by: Johannes Weiner <hannes@cmpxchg.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?