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SubjectRe: [PATCH 2.6.21] cramfs: add cramfs Linear XIP
> An alternative approach, which does not need to have struct page at
> hand, would be to use the nopfn vm operations struct. That one would
> have to rely on get_xip_pfn.

Of course! Okay now I'm begining to understand.

> The current path would then be deprecated.

Why? Wouldn't both paths be valid options?

> If you're interrested in using the later for xip without
> struct page, I would volounteer to go ahead and implement this?

I'm very interested in this.


I'm not opposed to using struct page, but I'm confused as to how to
start that. As I understand it, which is not well, defined a
CONFIG_DISCONTIGMEM region to cover the Flash memory would add that to
my pool of RAM. That would be 'bad', right? I don't see how to
create the page structs and set this memory aside as different.
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