linux-kernel - Re: [PATCH 4/5] mm: release per-node memcg percpu data prematurely

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Message-ID: <20190311172708.GD10823@cmpxchg.org>
Date:   Mon, 11 Mar 2019 13:27:08 -0400
From:   Johannes Weiner <hannes@...xchg.org>
To:     Roman Gushchin <guroan@...il.com>
Cc:     linux-mm@...ck.org, kernel-team@...com,
        linux-kernel@...r.kernel.org, Tejun Heo <tj@...nel.org>,
        Rik van Riel <riel@...riel.com>,
        Michal Hocko <mhocko@...nel.org>, Roman Gushchin <guro@...com>
Subject: Re: [PATCH 4/5] mm: release per-node memcg percpu data prematurely

On Thu, Mar 07, 2019 at 03:00:32PM -0800, Roman Gushchin wrote:
> Similar to memcg-level statistics, per-node data isn't expected
> to be hot after cgroup removal. Switching over to atomics and
> prematurely releasing percpu data helps to reduce the memory
> footprint of dying cgroups.
> 
> Signed-off-by: Roman Gushchin <guro@...com>

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