linux-kernel - Re: [PATCH v2 0/2] locking: Fix racy reads of owner->on

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Message-ID: <YanWSh2miL6E+aZR@hirez.programming.kicks-ass.net>
Date:   Fri, 3 Dec 2021 09:33:14 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Kefeng Wang <wangkefeng.wang@...wei.com>
Cc:     Ingo Molnar <mingo@...hat.com>, Will Deacon <will@...nel.org>,
        Waiman Long <longman@...hat.com>,
        Boqun Feng <boqun.feng@...il.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Mark Rutland <mark.rutland@....com>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        linux-kernel@...r.kernel.org, kasan-dev@...glegroups.com
Subject: Re: [PATCH v2 0/2] locking: Fix racy reads of owner->on_cpu

On Fri, Dec 03, 2021 at 03:59:33PM +0800, Kefeng Wang wrote:
> v2:
> - adding owner_on_cpu() refactor, shared by mutex/rtmutex/rwsem
> 
> v1: https://lore.kernel.org/all/20211202101238.33546-1-elver@google.com/
> 
> Kefeng Wang (1):
>   locking: Make owner_on_cpu() into <linux/sched.h>
> 
> Marco Elver (1):
>   locking: Mark racy reads of owner->on_cpu
> 
>  include/linux/sched.h    |  9 +++++++++
>  kernel/locking/mutex.c   | 11 ++---------
>  kernel/locking/rtmutex.c |  5 ++---
>  kernel/locking/rwsem.c   |  9 ---------
>  4 files changed, 13 insertions(+), 21 deletions(-)

Thanks!