Re: [PATCH] Define wc_wmb, a write barrier for PCI write combining

[Roland Dreier]

    Jes> Anyway, based on Jesse and Jeremy's comments, then maybe the
    Jes> semantics here are different. However I do think the name
    Jes> wc_wmb() isn't quite defining it. If it's only to be used on
    Jes> mmio space, something like mmio_wc_wmb() would probably be
    Jes> more descriptive.

I don't see any restriction to MMIO space -- it would be a strange
thing to do, but conceivable one might want to order writes that are
made to ordinary RAM via a write-combining mapping.

 - R.
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