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>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:   Sun, 11 Nov 2018 02:30:17 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Waiman Long <longman@...hat.com>
Cc:     Ingo Molnar <mingo@...hat.com>, Will Deacon <will.deacon@....com>,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-kernel@...r.kernel.org, kasan-dev@...glegroups.com,
        linux-mm@...ck.org, Petr Mladek <pmladek@...e.com>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Tejun Heo <tj@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [RFC PATCH 07/12] locking/lockdep: Add support for nested
 terminal locks

On Sat, Nov 10, 2018 at 07:30:54PM -0500, Waiman Long wrote:
> On 11/10/2018 09:20 AM, Peter Zijlstra wrote:
> > On Thu, Nov 08, 2018 at 03:34:23PM -0500, Waiman Long wrote:
> >> There are use cases where we want to allow 2-level nesting of one
> >> terminal lock underneath another one. So the terminal lock type is now
> >> extended to support a new nested terminal lock where it can allow the
> >> acquisition of another regular terminal lock underneath it.
> > You're stretching things here... If you're allowing things under it, it
> > is no longer a terminal lock.
> >
> > Why would you want to do such a thing?
> 
> A majority of the gain in debugobjects is to make the hash lock a kind
> of terminal lock. Yes, I may be stretching it a bit here. I will take
> back the nesting patch and consider doing that in a future patch.

Maybe try and write a better changelog? I'm not following, but that
could also be because I've been awake for almost 20 hours :/

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ