2 files changed, 11 insertions(+), 1 deletions(-)

M port/devmnt.c
M port/taslock.c

@@ 1058,7 1058,7 @@ mntrepl(char *buf)
 }
 
 Dev mntdevtab = {
-	'm',
+	'M',
 	"mnt",
 
 	mntreset,

@@ 69,8 69,18 @@ ilock(Lock *l)
 	}
 
 	for(;;){
+#ifdef notdef
 		while(l->key)
 			;
+#else
+{   int i;
+    i = 0;
+    while(l->key){
+	if(i++ > 100000000)
+	    panic("ilock loop: caller pc %luX, held by %luX\n", pc, l->pc);
+    }
+}
+#endif /* notdef */
 		if(tas(&l->key) == 0){
 			l->sr = x;
 			l->pc = pc;