linux-kernel - Re: [PATCH 0/4] exit: Make unlikely case in mm_update_next

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Message-ID: <20180426135250.GA14269@redhat.com>
Date:   Thu, 26 Apr 2018 15:52:51 +0200
From:   Oleg Nesterov <oleg@...hat.com>
To:     Michal Hocko <mhocko@...nel.org>
Cc:     Kirill Tkhai <ktkhai@...tuozzo.com>, akpm@...ux-foundation.org,
        peterz@...radead.org, viro@...iv.linux.org.uk, mingo@...nel.org,
        paulmck@...ux.vnet.ibm.com, keescook@...omium.org, riel@...hat.com,
        tglx@...utronix.de, kirill.shutemov@...ux.intel.com,
        marcos.souza.org@...il.com, hoeun.ryu@...il.com,
        pasha.tatashin@...cle.com, gs051095@...il.com,
        ebiederm@...ssion.com, dhowells@...hat.com,
        rppt@...ux.vnet.ibm.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/4] exit: Make unlikely case in mm_update_next_owner()
 more scalable

On 04/26, Michal Hocko wrote:
>
> then I suspect that we should be better off reconsidering
> mm->owner and try to come up with something more clever. I've had a
> patch to remove owner few years back.

Yeees, I do remember we discussed this but I forgot everything.

I agree, it would nice to turn mm->owner into mm->mem_cgroup and just kill
the ugly mm_update_next_owner/etc.

Oleg.