1/4

This patchset introduces a couple of new arch atomic.h
operations, and simplifies some core code as a result.
Diffed against 2.6.14-rc2-git3.

Acked-in-theory by several arch maintainers (at least
objected to by none), by Dipankar for files-rcu, and by
David Miller for lib/dec_and_lock.c

Will need a bit of a run in -mm because it is sure to
have problems on some architectures (particularly ARM
will need to be careful because low level assembly is
introduced).

What do ya think?

-- 
SUSE Labs, Novell Inc.