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

["Jared Hulbert" <jaredeh@gmail.com>]

> If you can write code that doesn't need any struct pages that would make
> life a bit easier, since we wouldn't need any pseudo memory hotplug code
> that just adds struct pages.

That was my gut feel too.  However, it seems from Carsten and Jörn
discussion of read/write XIP on Flash (and some new Phase Change)
memories that having the struct pages has a lot of potential benefits.
Wouldn't it also allow most of the mm routines to remain unchanged.
I just worry that it would be difficult to set apart these non
volitatile pages that can't be written too directly.

> We would still need to add the kernel mapping though.

But that's handled by ioremap()ing it right?
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