-mm дерево Эндрю Мортона не поддерживается более :/

http://en.wikipedia.org/wiki/Mm_tree

Occasionally, the -mm tree was overloaded with new patches so testing it became overly difficult. On Sep 17 2007 Andrew Morton sent a mail saying that "this just isn't working any more".
Today the -mm tree is no longer being developed and has been superseded by the -next tree.

А ссылок на -mm дофига до сих пор :/