MMIO and gcc re-ordering issue

Roland Dreier rdreier at
Wed May 28 08:39:07 EST 2008

 > > 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.

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