Re: [PATCH v4 0/2] proc: Ensure we see the exit of each process tid exactly

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To: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
Subject: Re: [PATCH v4 0/2] proc: Ensure we see the exit of each process tid exactly
From: Oleg Nesterov <oleg@xxxxxxxxxx>
Date: Tue, 28 Apr 2020 20:05:41 +0200
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>, LKML <linux-kernel@xxxxxxxxxxxxxxx>, Linux FS Devel <linux-fsdevel@xxxxxxxxxxxxxxx>, Alexey Dobriyan <adobriyan@xxxxxxxxx>, Alexey Gladkov <legion@xxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Alexey Gladkov <gladkov.alexey@xxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, "Paul E. McKenney" <paulmck@xxxxxxxxxx>
In-reply-to: <87sggnajpv.fsf_-_@x220.int.ebiederm.org>
User-agent: Mutt/1.5.24 (2015-08-30)

On 04/28, Eric W. Biederman wrote:
>
> In short I don't think this change will introduce any regressions.
>
> Eric W. Biederman (2):
>       rculist: Add hlists_swap_heads_rcu
>       proc: Ensure we see the exit of each process tid exactly once

Eric, sorry, I got lost.

Both changes look good to me, feel free to add my ack, but I presume
this is on top of next_tgid/lookup_task changes ? If yes, why did not
you remove has_group_leader_pid?

Oleg.

Follow-Ups:
- Re: [PATCH v4 0/2] proc: Ensure we see the exit of each process tid exactly
  - From: Eric W. Biederman

References:
- [PATCH v12 0/7] proc: modernize proc to support multiple private instances
  - From: Alexey Gladkov
- [PATCH v2 2/2] proc: Ensure we see the exit of each process tid exactly
  - From: Eric W. Biederman
- Re: [PATCH v2 2/2] proc: Ensure we see the exit of each process tid exactly
  - From: Oleg Nesterov
- Re: [PATCH v3 3/6] rculist: Add hlist_swap_before_rcu
  - From: Linus Torvalds
- Re: [PATCH v3 3/6] rculist: Add hlist_swap_before_rcu
  - From: Eric W. Biederman
- Re: [PATCH v3 3/6] rculist: Add hlist_swap_before_rcu
  - From: Linus Torvalds
- [PATCH v4 0/2] proc: Ensure we see the exit of each process tid exactly
  - From: Eric W. Biederman

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