Re: Unlock-lock questions and the Linux Kernel Memory Model

[Peter Zijlstra]

On Thu, Nov 30, 2017 at 08:14:01AM -0800, Paul E. McKenney wrote:
> > (Also, technically speaking, the litmus test doesn't have any release 
> > operations, so no release sequence...)
> 
> True!  But if you translated it into C11, you would probably turn the
> smp_wmb() followed by write into a store release, which would get you
> a release sequence.

        smp_wmb()
        WRITE_ONCE(*y, 1);

does not a RELEASE make.