The case of the overly anonymous anon_vma

Actually, that's a similar message, but not the one I was thinking of. In that one, he says "So again, I can show that..." I was looking at the first time, and this is the second time. The one I'm thinking of is http://groups.google.com/group/linux.kernel/msg/f9c7ca848... and has a more complete explanation of the middle steps.