add note

8139713c · rsc · 2715cd35 · 8139713c · 8139713c
--- a/BUGS
+++ b/BUGS
@@ -11,9 +11,8 @@ proc.c:

 	factor out switching and scheduling code from process code

-trap.c
-	if spin locks are ever held without cli,
-	trap should call yield() only if nlock == 0
+kalloc.c
+	more cleanups

 ide.c: synchronous disk write -> polling disk write.  search for
       (a)synchronous; xv6 doesn't have asynchronous writes.
@@ -32,3 +31,9 @@ sysfile.c:
 general:
 	sizeof parens?

+usertests.c:
+	check for rm of . or ..
+
+L=$HOME/mit/l
+(for i in *.c; do xoc -x xgnu -x ./nodecleq.zeta --typesonly $i; done) 2>&1 | grep warning
+
--- a/trap.c
+++ b/trap.c
@@ -57,6 +57,7 @@ trap(struct trapframe *tf)
        proc_exit();

      // Force process to give up CPU and let others run.
+      // If locks were held with interrupts on, would need to check nlock.
      if(cp->state == RUNNING)
        yield();
    }