Module Name: src
Committed By: riastradh
Date: Mon Mar 28 12:34:26 UTC 2022
Modified Files:
src/sys/miscfs/specfs: spec_vnops.c
Log Message:
specfs: Note lock order for vnode lock, device_lock, v_interlock.
To generate a diff of this commit:
cvs rdiff -u -r1.185 -r1.186 src/sys/miscfs/specfs/spec_vnops.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/miscfs/specfs/spec_vnops.c
diff -u src/sys/miscfs/specfs/spec_vnops.c:1.185 src/sys/miscfs/specfs/spec_vnops.c:1.186
--- src/sys/miscfs/specfs/spec_vnops.c:1.185 Mon Mar 28 12:34:17 2022
+++ src/sys/miscfs/specfs/spec_vnops.c Mon Mar 28 12:34:25 2022
@@ -1,4 +1,4 @@
-/* $NetBSD: spec_vnops.c,v 1.185 2022/03/28 12:34:17 riastradh Exp $ */
+/* $NetBSD: spec_vnops.c,v 1.186 2022/03/28 12:34:25 riastradh Exp $ */
/*-
* Copyright (c) 2008 The NetBSD Foundation, Inc.
@@ -58,7 +58,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: spec_vnops.c,v 1.185 2022/03/28 12:34:17 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: spec_vnops.c,v 1.186 2022/03/28 12:34:25 riastradh Exp $");
#include <sys/param.h>
#include <sys/proc.h>
@@ -85,6 +85,14 @@ __KERNEL_RCSID(0, "$NetBSD: spec_vnops.c
#include <miscfs/genfs/genfs.h>
#include <miscfs/specfs/specdev.h>
+/*
+ * Lock order:
+ *
+ * vnode lock
+ * -> device_lock
+ * -> struct vnode::v_interlock
+ */
+
/* symbolic sleep message strings for devices */
const char devopn[] = "devopn";
const char devio[] = "devio";
