Re: [GIT PULL] mm: frontswap (for 3.2 window)

On Thu, Oct 27, 2011 at 02:49:31PM -0700, Dan Magenheimer wrote:

If Linux truly subscribes to the "code rules" mantra, no core
VM developer has proposed anything -- even a design, let alone
working code -- that comes close to providing the functionality
and flexibility that frontswap (and cleancache) provides, and
frontswap provides it with a very VERY small impact on existing
kernel code AND has been posted and working for 2+ years.
(And during that 2+ years, excellent feedback has improved the
"kernel-ness" of the code, but NONE of the core frontswap
design/hooks have changed... because frontswap _just works_!)

It might work for whatever defintion of work, but you certainly couldn't
convince anyone that matters that it's actually sexy and we'd actually
need it.  Only actually working on Xen of course doesn't help.

In the end it's a bunch of really ugly hooks over core code, without
a clear defintion of how they work or a killer use case.

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