--- a/src/os/linux/vm/os_linux.hpp	Tue Apr 01 14:09:03 2014 +0200
+++ b/src/os/linux/vm/os_linux.hpp	Tue Apr 01 13:57:07 2014 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2013, 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
@@ -30,9 +30,6 @@
 /* pthread_getattr_np comes with LinuxThreads-0.9-7 on RedHat 7.1 */
 typedef int (*pthread_getattr_func_type) (pthread_t, pthread_attr_t *);
 
-// Information about the protection of the page at address '0' on this os.
-static bool zero_page_read_protected() { return true; }
-
 class Linux {
   friend class os;
   friend class TestReserveMemorySpecial;
@@ -206,6 +203,10 @@
   // fast POSIX clocks support
   static void fast_thread_clock_init(void);
 
+  static inline bool supports_monotonic_clock() {
+    return _clock_gettime != NULL;
+  }
+
   static int clock_gettime(clockid_t clock_id, struct timespec *tp) {
     return _clock_gettime ? _clock_gettime(clock_id, tp) : -1;
   }