From c59f6df7286b4f0973cb685e876edc3b3e470ff9 Mon Sep 17 00:00:00 2001
From: David du Colombier <0intro@gmail.com>
Date: Fri, 10 May 1996 00:00:00 +0000
Subject: [PATCH] Plan 9 from Bell Labs 1996-05-10

---
 port/devmnt.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/port/devmnt.c b/port/devmnt.c
index cf155f68b7c17cfcae6c48a6db8c493b2dd3f1bb..68892cee08f886f4e47670734da1b9ac596ce2c3 100644
--- a/port/devmnt.c
+++ b/port/devmnt.c
@@ -763,19 +763,23 @@ void
 mntgate(Mnt *m)
 {
 	Mntrpc *q;
+	int x;
 
 	lock(m);
 	m->rip = 0;
 	for(q = m->queue; q; q = q->list) {
 		if(q->done == 0) {
+			x = splhi();	/* because sleep also does */
 			lock(&q->r);
 			if(q->r.p) {
 				unlock(&q->r);
+				splx(x);
 				unlock(m);
 				wakeup(&q->r);
 				return;
 			}
 			unlock(&q->r);
+			splx(x);
 		}
 	}
 	unlock(m);