disable preemption in the self-reap codepath, as such tasks may not be on
the tasklist anymore and CPU-hotplug relies on the tasklist to migrate
tasks.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>