Re: [PATCH 2/5] revoke: core code

[Pekka J Enberg]

On Fri, 16 Mar 2007, Andrew Morton wrote:
> What you're trying to do here is very similar to truncate(), and truncate()
> has had a lot of work put into it, and it does work.

Indeed. revoke() is the same as truncate() without, well, the truncation 
part.

On Fri, 16 Mar 2007, Andrew Morton wrote:
> However, modifying i_size like this might be a problem - the inode could be
> dirty and it'll get written to disk!  Perhaps we could change i_size_read()
> to cheat and to return zero if there's a revoke in progress.

Hmph, it's probably going to get too painful so I'll look at adding some 
hooks to do_generic_mapping_read()...

			Pekka
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