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Date: Fri, 1 Sep 2017 11:48:32 +0200
From: Peter Zijlstra <peterz@infradead.org>
To: Kees Cook <keescook@chromium.org>
Cc: Elena Reshetova <elena.reshetova@intel.com>,
        Andrew Morton <akpm@linux-foundation.org>,
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        Thomas Gleixner <tglx@linutronix.de>, dvhart@infradead.org,
        "Eric W. Biederman" <ebiederm@xmission.com>
Subject: Re: [PATCH 00/15] v5 kernel core pieces refcount conversions
Message-ID: <20170901094832.inwuzxczxs4b2ehh@hirez.programming.kicks-ass.net>
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On Thu, Aug 31, 2017 at 04:48:00PM -0700, Kees Cook wrote:
> On Wed, Aug 30, 2017 at 5:22 AM, Elena Reshetova
> <elena.reshetova@intel.com> wrote:
> > Now we have at least x86 support for ARCH_HAS_REFCOUNT merged and
> > arm and others on their way.
> >
> > Changes in v5:
> >  * Kees catched that the following changes in
> >    perf_event_context.refcount and futex_pi_state.refcount
> >    are not correct now when ARCH_HAS_REFCOUNT is enabled:
> >     -   WARN_ON(!atomic_inc_not_zero(refcount));
> >     +   refcount_inc(refcount);
> >    So they are now changed back to using refcount_inc_not_zero.
> 
> Thanks!
> 
> Reviewed-by: Kees Cook <keescook@chromium.org>
> 
> Andrew, are you able to carry these patches in -mm, since they span a
> bunch of core kernel areas?

No.. these patches should go through the regular trees that maintain
these various parts.