Well, we should really be calling ksize() in the nommu case and although
Matt and Christoph don't seem to agree with me here, I'd much rather
have *all* allocators set PageSlab for all the pages they return (yes,
including pass-through ones) to get us back where we were with SLAB. We
currently don't have any means to see whether an arbitrary page is part
of the slab or not and I'd argue that's PageSlab is an established API
(that makes sense).
Furthermore, if ksize() in SLOB doesn't work for kmem_cache_alloc()
pages, I think it should be fixed as well.
Pekka
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