- Split the run queue and sleep queue linkage, so that a process

may block on a mutex while on the sleep queue without corrupting
it.
- Move dropping of Giant to after the acquire of sched_lock.

Tested by:	John Hay <jhay@icomtek.csir.co.za>
		jhb

1 files changed, 1 insertions, 1 deletions

diff --git a/sys/kern/kern_subr.c b/sys/kern/kern_subr.c
index 429f34b..c379f79 100644
--- a/sys/kern/kern_subr.c
+++ b/sys/kern/kern_subr.c
@@ -377,8 +377,8 @@ uio_yield()
 
 	p = curproc;
 	s = splhigh();
-	DROP_GIANT_NOSWITCH();
 	mtx_enter(&sched_lock, MTX_SPIN);
+	DROP_GIANT_NOSWITCH();
 	p->p_priority = p->p_usrpri;
 	setrunqueue(p);
 	p->p_stats->p_ru.ru_nivcsw++;