--- old/src/os_cpu/linux_x86/vm/threadLS_linux_x86.hpp	2010-11-16 18:06:18.000000000 +0100
+++ new/src/os_cpu/linux_x86/vm/threadLS_linux_x86.hpp	2010-11-16 18:06:17.000000000 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2003, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -22,6 +22,9 @@
  *
  */
 
+#ifndef OS_CPU_LINUX_X86_VM_THREADLS_LINUX_X86_HPP
+#define OS_CPU_LINUX_X86_VM_THREADLS_LINUX_X86_HPP
+
   // Processor dependent parts of ThreadLocalStorage
 
 #ifndef AMD64
@@ -47,3 +50,5 @@
     return _sp_map[sp >> PAGE_SHIFT];
 #endif // AMD64
   }
+
+#endif // OS_CPU_LINUX_X86_VM_THREADLS_LINUX_X86_HPP