ipc/msg.c: one more possible problems

Manfred Spraul (manfreds@colorfullife.com)
Mon, 27 Sep 1999 21:49:58 +0000

The freeque() implementation must wait until all waiting reader threads
have left the kernel:
> while (waitqueue_active(&msq->rwait) || waitqueue_active(&msq->wwait)) {
> wake_up (&msq->rwait);
> wake_up (&msq->wwait);
> schedule();
> }

I've read that calling schedule() could lock up.
What's the exact problem? (I read that it has something to to with
SCHED_RR threads).

--
	Manfred


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