This is the general todo list for the page_replace work:

• port the page replace policy code to -mm this includes adding some abstractions in order to accommodate the swap migration work of christoph lameter.

• port the CART policies (with and without cyclic extension) to the shiny new policy framework.

• come up with good benchmarks showing both:

  1. that the new code doesn't degrade performance; and

  2. that it does improve the expected scenarios.

• document it.

• have I mentioned benchmarks?

• trick andrew to accept the patches.