Re: [PATCH 2.6.21] cramfs: add cramfs Linear XIP

From: Jared Hulbert
Date: Thu Jun 14 2007 - 12:53:42 EST

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.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at