linux-kernel - Re: [GIT PULL] Please pull proc and exec work for 5.7-rc1

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Date:   Fri, 3 Apr 2020 18:30:28 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Waiman Long <longman@...hat.com>
Cc:     "Eric W. Biederman" <ebiederm@...ssion.com>,
        Ingo Molnar <mingo@...nel.org>, Will Deacon <will@...nel.org>,
        Bernd Edlinger <bernd.edlinger@...mail.de>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Alexey Gladkov <gladkov.alexey@...il.com>
Subject: Re: [GIT PULL] Please pull proc and exec work for 5.7-rc1

On Fri, Apr 3, 2020 at 4:23 PM Waiman Long <longman@...hat.com> wrote:
>
> Alternatively, we could assert that only one reader can do the upgrade
> and do a WARN_ON_ONCE() if multiple concurrent upgrade attempts is detected.

Ack, that would be best.

[ And since I'm not on mobile any more, and my html email got thrown
out by the list, I'll just repeat that by "static choice" I mean "no
runtime decisions or flags": code that needs the unfair behavior would
use a special unfair function ]

              Linus