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SubjectRe: 2.5: PCI scatter gather list change
On Sun, Dec 02 2001, Anton Blanchard wrote:
> Hi Jens,
> I got 2.5 booting on ppc64 today and noticed that the behaviour of
> sglists has changed. Before we would get an array of sg->address,
> sg->length pairs, we now get sg->page, sg->offset, sg->length triplets
> (from blk_rq_map_sg).
> I dont care too much either way, but if this change is here to stay I'll
> let the non intel maintainers know so they can fix up their pci dma
> code.

The change is here to stay, the ->address stuff will die in 2.5.
Consider highmem pages which have no virtual mapping.

Jens Axboe

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