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Date:   Thu, 26 Apr 2018 21:28:18 +0200
From:   Michal Hocko <mhocko@kernel.org>
To:     "Eric W. Biederman" <ebiederm@xmission.com>
Cc:     Kirill Tkhai <ktkhai@virtuozzo.com>, akpm@linux-foundation.org,
        peterz@infradead.org, oleg@redhat.com, viro@zeniv.linux.org.uk,
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        linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/4] exit: Make unlikely case in mm_update_next_owner()
 more scalable
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On Thu 26-04-18 11:19:33, Eric W. Biederman wrote:
> Michal Hocko <mhocko@kernel.org> writes:
> 
> > I've had a patch to remove owner few years back. It needed some work
> > to finish but maybe that would be a better than try to make
> > non-scalable thing suck less.
> 
> I have a question.  Would it be reasonable to just have a mm->memcg?
> That would appear to be the simplest solution to the problem.

I do not remember details. Have to re-read the whole thing again. Hope
to get to this soon but with the current jet lag and backlog from the
LSFMM I rather not promis anything. Going with mm->memcg would be the
most simple of course but I have a very vague recollection that it was
not possible. Maybe I misremember...

-- 
Michal Hocko
SUSE Labs