David Miller wrote:

Using SLAB/SLUB for the page table bits with appropriate constructor
and destructor bits ought to be able to approximate the gains
from avoiding the initialization for cached objects.

Its a bit strange to use the small object allocator for page sized
allocations. Plus there is this tie in with the tlb flushing logic. So I think
this would be more clean if it would be moved into the asm-generic/tlb.h or so.

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