linux-kernel - Re: [PATCH RESEND] mm/oom_kill: don't kill exiting tasks in oom_kill_memcg

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Message-ID: <ZBA8NlwBTprShO3e@dhcp22.suse.cz>
Date:   Tue, 14 Mar 2023 10:19:50 +0100
From:   Michal Hocko <mhocko@...e.com>
To:     Haifeng Xu <haifeng.xu@...pee.com>
Cc:     shakeelb@...gle.com, hannes@...xchg.org, akpm@...ux-foundation.org,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH RESEND] mm/oom_kill: don't kill exiting tasks in
 oom_kill_memcg_member

On Tue 14-03-23 09:11:36, Haifeng Xu wrote:
> If oom_group is set, oom_kill_process() invokes oom_kill_memcg_member()
> to kill all processes in the memcg. When scanning tasks in memcg, maybe
> the provided task is marked as oom victim. Also, some tasks are likely
> to release their address space. There is no need to kill the exiting tasks.

This doesn't state any actual problem. Could you be more specific? Is
this a bug fix, a behavior change or an optimization?
-- 
Michal Hocko
SUSE Labs