There is a stupid error in cfq-iosched that spews a warning on
(typically) SMP systems because cfqq->allocated[rw] goes below zero. The
error is that the increment on alloc happens outside of the queue lock.
Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>