linux-kernel - Re: [PATCH rfc 0/3] mm: memcg: deprecate cgroup v1 non-hierarchical mode

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <alpine.DEB.2.23.453.2011041509290.447493@chino.kir.corp.google.com>
Date:   Wed, 4 Nov 2020 15:10:19 -0800 (PST)
From:   David Rientjes <rientjes@...gle.com>
To:     Roman Gushchin <guro@...com>
cc:     linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>,
        Shakeel Butt <shakeelb@...gle.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Michal Hocko <mhocko@...nel.org>, Tejun Heo <tj@...nel.org>,
        linux-kernel@...r.kernel.org, kernel-team@...com
Subject: Re: [PATCH rfc 0/3] mm: memcg: deprecate cgroup v1 non-hierarchical
 mode

On Tue, 3 Nov 2020, Roman Gushchin wrote:

> The non-hierarchical cgroup v1 mode is a legacy of early days
> of the memory controller and doesn't bring any value today.
> However, it complicates the code and creates many edge cases
> all over the memory controller code.
> 
> It's a good time to deprecate it completely. This patchset removes
> the internal logic, adjusts the user interface and updates
> the documentation. The alt patch removes some bits of the cgroup
> core code, which become obsolete.
> 
> 
> Roman Gushchin (3):
>   mm: memcg: deprecate the non-hierarchical mode
>   docs: cgroup-v1: reflect the deprecation of the non-hierarchical mode
>   cgroup: remove obsoleted broken_hierarchy and warned_broken_hierarchy
> 

For all three patches:

Acked-by: David Rientjes <rientjes@...gle.com>

Very welcome change to see, we've always prevented the non-hierarchical 
mode from being set in our kernel.