[Patch] panics/hangs with preemption and threads.

[Maxim Maximov]

Julian Elischer wrote:
> Guys I think I found a (the?) major cause for the corruptions of the
> ksegrp/thread runqueue for threaded processes when Premption is turned on..

Mozilla didn't lock the system up for an hour of hard work with IMAP! 
That's pretty amazing I'd say. Without this patch it caused hard freeze 
in 1-5 minutes. I'm using sched_4bsd and HTT ATM.

Thanks for finding this bug! Now I'm sure we will have stable 
5.3-RELEASE in time.

-- 
Maxim Maximov