I really like the idea of using the spare slots in the radix tree for something useful. It's amazing we haven't used that before. I wonder if with some clever encoding even more information could be fit? e.g. I assume you don't really need all bits of the refault distance, just a good enough approximation. -Andi -- ak@xxxxxxxxxxxxxxx -- Speaking for myself only. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>