[PATCH][RFC] Fix SPARC atomic_write_barrier.

[David Miller]

From: David Miller <davem@davemloft.net>
Date: Thu, 30 Oct 2014 21:58:34 -0400 (EDT)

> From: Torvald Riegel <triegel@redhat.com>
> Date: Fri, 31 Oct 2014 01:22:16 +0100
> 
>> Do you have an opinion on the actual patch, rather than my description?
> 
> Sorry for getting distracted :-) I'll review your patch as soon as I
> can.

It looks good, and passes the tests I've done so far.

Please feel free to commit it.

Thanks!