diff -uNr cman-2.0.86/group/include/linux/dlm_plock.h cman-2.0.86.new/group/include/dlm_plock.h
--- cman-2.0.86/group/include/linux/dlm_plock.h	1969-12-31 18:00:00.000000000 -0600
+++ cman-2.0.86.new/group/include/linux/dlm_plock.h	2008-07-17 14:11:27.000000000 -0500
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2005-2008 Red Hat, Inc.  All rights reserved.
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ */
+
+#ifndef __DLM_PLOCK_DOT_H__
+#define __DLM_PLOCK_DOT_H__
+
+#define DLM_PLOCK_MISC_NAME		"dlm_plock"
+
+#define DLM_PLOCK_VERSION_MAJOR	1
+#define DLM_PLOCK_VERSION_MINOR	1
+#define DLM_PLOCK_VERSION_PATCH	0
+
+enum {
+	DLM_PLOCK_OP_LOCK = 1,
+	DLM_PLOCK_OP_UNLOCK,
+	DLM_PLOCK_OP_GET,
+};
+
+struct dlm_plock_info {
+	__u32 version[3];
+	__u8 optype;
+	__u8 ex;
+	__u8 wait;
+	__u8 pad;
+	__u32 pid;
+	__s32 nodeid;
+	__s32 rv;
+	__u32 fsid;
+	__u64 number;
+	__u64 start;
+	__u64 end;
+	__u64 owner;
+};
+
+
+#endif
+