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

[Carsten Otte]

Christoph Hellwig wrote:
> Jared's patch currently does ioremap on mount (and no iounmap at all).
> That mapping needs to move from the filesystem to the device driver.
The device driver needs to do ioremap on open(), and iounmap() on 
release. That's effectively what our block driver does.
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