Re: [PATCH] locking: Remove an insn from spin and write locks

[Matthew Wilcox]

On Mon, Aug 20, 2018 at 05:56:50PM +0200, Peter Zijlstra wrote:
> Yeah, _acquire should be retained; sorry about loosing that. I'm neck
> deep into tlb invalidate stuff and wrote this without much thinking
> involved.

NP.  Here's the current version I've got, with some updated likely()
hints.