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From: Nick Piggin <nickpiggin@yahoo.com.au>
To: David Howells <dhowells@redhat.com>
Subject: Re: [PATCH 10/28] FS-Cache: Recruit a couple of page flags for cache management [try #2]
Date: Tue, 18 Dec 2007 18:00:23 +1100
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On Tuesday 18 December 2007 09:36, David Howells wrote:
> Nick Piggin <nickpiggin@yahoo.com.au> wrote:
> > I'd much prefer if you would handle this in the filesystem, and have it
> > set PG_private whenever fscache needs to receive a callback, and DTRT
> > depending on whether PG_fscache etc. is set or not.
>
> That's tricky and slower[*].  One of the things I want to do is to modify
> iso9660 to do be able to do caching, but PG_private is 'owned' by the
> generic buffer cache code.

Maybe it is harder, but it is the right way to do it. So you
should modify the filesystems rather than core code.
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