Hi,

I think the previous few patches / patchsets to handle the unaligned zone
thing aren't exactly what we want (at least, for 2.6.16.stable and 2.6.17).

Firstly, we need to check for buddies outside the zone span, not just those
which are in a different zone.

Secondly, I think aligned zones should be an opt-in thing. Performance hit
is not huge, but potential stability hit is.

-- 
SUSE Labs, Novell Inc.