--- old/src/hotspot/share/runtime/os.hpp	2018-09-13 12:39:21.637026956 +0530
+++ new/src/hotspot/share/runtime/os.hpp	2018-09-13 12:39:21.517026956 +0530
@@ -539,7 +539,9 @@
 
   // run cmd in a separate process and return its exit code; or -1 on failures
   static int fork_and_exec(char *cmd);
-
+#if defined(LINUX)
+  static int vfork_and_exec(char *cmd);
+#endif
   // Call ::exit() on all platforms but Windows
   static void exit(int num);