linux-kernel - Re: [PATCH v3 0/6] hugetlb_cgroup: Add hugetlb

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Message-ID: <20190828112340.GB7466@dhcp22.suse.cz>
Date:   Wed, 28 Aug 2019 13:23:40 +0200
From:   Michal Hocko <mhocko@...nel.org>
To:     Mina Almasry <almasrymina@...gle.com>
Cc:     mike.kravetz@...cle.com, shuah@...nel.org, rientjes@...gle.com,
        shakeelb@...gle.com, gthelen@...gle.com, akpm@...ux-foundation.org,
        khalid.aziz@...cle.com, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, linux-kselftest@...r.kernel.org,
        cgroups@...r.kernel.org, aneesh.kumar@...ux.vnet.ibm.com,
        mkoutny@...e.com
Subject: Re: [PATCH v3 0/6] hugetlb_cgroup: Add hugetlb_cgroup reservation
 limits

On Mon 26-08-19 16:32:34, Mina Almasry wrote:
>  mm/hugetlb.c                                  | 493 ++++++++++++------
>  mm/hugetlb_cgroup.c                           | 187 +++++--

This is a lot of changes to an already subtle code which hugetlb
reservations undoubly are. Moreover cgroupv1 is feature frozen and I am
not aware of any plans to port the controller to v2. That all doesn't
sound in favor of this change. Mike is the maintainer of the hugetlb
code so I will defer to him to make a decision but I wouldn't recommend
that.
-- 
Michal Hocko
SUSE Labs