Re: [PATCH 3/4] Embed zone_id information within the zonelist->zones pointer

On Wed, Aug 15, 2007 at 12:37:49PM +0100, Ralf Baechle wrote:
> On Tue, Aug 14, 2007 at 02:14:41AM +0200, Andi Kleen wrote:
> 
> > meth is only used on SGI O2s which are not that slow and unlikely
> > to work in tree anyways.
> 
> O2 doesn't enable CONFIG_ZONE_DMA so there is no point in using GFP_DMA in
> an O2-specific device driver.  Will send out patch in separate mail.

Great.

BTW I suspect this is true for some other GFP_DMA usages too.
Some driver writers seem to confuse it with the PCI DMA
APIs or believe it is always needed for them.

-Andi
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