[PATCH 4/9] locking/qrwlock: implement queue_write_unlock using smp_store_release

[Peter Zijlstra]

On Tue, Jul 07, 2015 at 06:24:20PM +0100, Will Deacon wrote:
> smp_store_release supports byte accesses, so use that in writer unlock
> and remove the conditional macro override.
> 

Maybe mention that this is possible since:

536fa402221f ("compiler: Allow 1- and 2-byte smp_load_acquire() and
smp_store_release()")