Re: write barriers - Was: Re: [RFC][PATCH] problem of cont_prepare_write()

[Florian Weimer]

* Chris Friesen:

> I believe so.  You may also need to cast them as volatile to prevent the 
> compiler from reordering--can someone with more gcc knowledge than I 
> state definitively whether or not it is smart enough to not reorder 
> barriers?

If you define it properly, GCC won't reorder it (volatile __asm__ with
memory operands should be sufficient).
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