> It would've been nice to see the ZONE_DMA removal patches just #define
> ZONE_DMA regardless, and include less #ifdefs scattered about; but at
> this point, I'd just as soon prefer to see a proper way to allocate
> things based on address constraints (as discussed in
>
http://www.gelato.unsw.edu.au/archives/linux-ia64/0609/19036.html).