Subject: Re: MMIO and gcc re-ordering issue

From: Roland Dreier <[email-masked]>
Date: Tue, 27 May 2008 15:39:07 -0700

> > Cool... I assume you do this for mutex_unlock() etc?

 > That's a good point... I don't think we do. Maybe we should.

I think it's needed -- take a look at 76d7cc03, which came from a real
bug seen on Altix boxes.