Re: [RFC][PATCH 7/7] kref: Implement using refcount_t

From: Peter Zijlstra
Date: Thu Nov 17 2016 - 12:20:10 EST

On Thu, Nov 17, 2016 at 12:08:36PM +0000, Will Deacon wrote:
> All sounds reasonable to me. It's worth pointing out that you can't create
> order using a control dependency hanging off the status flag of a
> store-conditional, but the code in question here has the dependency from
> the loaded value, which is sufficient.

Yeah, I'm always surprised by that 'feature'. Is that ARM specific? Or
so more LL/SC archs have this?