linux-kernel - Re: [RFC PATCH] kthread: do not modify running work

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Date:   Wed, 30 Sep 2020 17:01:09 +0200
From:   Petr Mladek <pmladek@...e.com>
To:     Hillf Danton <hdanton@...a.com>
Cc:     linux-kernel@...r.kernel.org, tj@...nel.org,
        akpm@...ux-foundation.org, Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Zqiang <qiang.zhang@...driver.com>
Subject: Re: [RFC PATCH] kthread: do not modify running work

On Sat 2020-09-26 12:04:26, Hillf Danton wrote:
> 
> It does not make much sense to rearm timer for the delayed work if
> it is worker's current work atm because it's good to do work only
> once.

Quite typical scenario is to queue delayed work from its own callback.
It allows to do the work in regular intervals.

This patch would break it. Or do I miss anything?

Best Regards,
Petr