On Thu, Feb 26, 2009 at 08:10:43PM +0800, Herbert Xu wrote:
> Russell King - ARM Linux <linux@xxxxxxxxxxxxxxxx> wrote:
> >
> > We can't merge this until _all_ of ARM has been fixed for walking
> > scatterlist chains.
>
> Right, this is definitely not the way to fix this bug. Because
> even if ARM completely supported chaining, you still have to fix
> all the other architectures as well.
I don't think you can use chained scatterlists unless the architecture
supports it. It's not a case that you have to flatten the chaining
before passing it over to the arch - it seems you're not allowed to
create a chained scatterlist in the first place:
static inline void sg_chain(struct scatterlist *prv, unsigned int prv_nents,
struct scatterlist *sgl)
{
#ifndef ARCH_HAS_SG_CHAIN
BUG();
#endif
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