[Ocfs2-devel] bug in cleancache ocfs2 hook, anybody want to try cleancache?

[Dan Magenheimer]

> > > Also, as regards your earlier question wrt a kvm backend, I may be
> > > tempted to have a go at writing one, but I'd like to figure out what
> > > I'm letting myself in for before making any commitment to that,
> 
> > I think the hardest part is updating the tmem.c module in zcache
> > to support multiple "clients".  When I ported it from Xen, I tore
> > all that out.  Fortunately, I've put it back in during RAMster
> > development but those changes haven't yet seen the light of day
> > (though I can share them offlist).
> 
> I'd like to try and understand the design of the existing code before I
> consider anything more advanced such as writing a kvm backend,

FYI, the "hardest part" (support for multiple clients) is now in
Linus's tree as of today.  With a little hypercall and glue code,
KVM might just work now with tmem/cleancache/frontswap.

Dan