linux-kernel - Re: [PATCH 14/19] mm: Introduce a cgroup for pinned memory

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Message-ID: <Y+GjSTu9vE/A/EKG@mtj.duckdns.org>
Date:   Mon, 6 Feb 2023 15:03:05 -1000
From:   Tejun Heo <tj@...nel.org>
To:     Waiman Long <longman@...hat.com>
Cc:     Yosry Ahmed <yosryahmed@...gle.com>,
        Alistair Popple <apopple@...dia.com>, linux-mm@...ck.org,
        cgroups@...r.kernel.org, linux-kernel@...r.kernel.org,
        jgg@...dia.com, jhubbard@...dia.com, tjmercier@...gle.com,
        hannes@...xchg.org, surenb@...gle.com, mkoutny@...e.com,
        daniel@...ll.ch, "Daniel P . Berrange" <berrange@...hat.com>,
        Alex Williamson <alex.williamson@...hat.com>,
        Zefan Li <lizefan.x@...edance.com>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH 14/19] mm: Introduce a cgroup for pinned memory

On Mon, Feb 06, 2023 at 08:00:54PM -0500, Waiman Long wrote:
> If it should not be part of the memcg, does it make sense to make it a
> resource in the existing misc controller? I believe we don't want a
> proliferation of new cgroup controllers.

Yeah, if it's gonna be an independent knob, I suppose so, but I really think
the locked accounting should be tied to the page, which mostly likely would
mean that it'd be tied to the page ownership too making its natural place
memcg.

Thanks.

-- 
tejun