--- old/src/hotspot/os/bsd/os_bsd.cpp	2017-10-31 15:49:41.234724534 -0700
+++ new/src/hotspot/os/bsd/os_bsd.cpp	2017-10-31 15:49:40.971726528 -0700
@@ -2351,6 +2351,17 @@
   return UseHugeTLBFS;
 }
 
+char* os::pd_attempt_reserve_memory_at(size_t bytes, char* requested_addr, int file_desc) {
+  assert(file_desc >= 0, "file_desc is not valid");
+  char* result = pd_attempt_reserve_memory_at(bytes, requested_addr);
+  if (result != NULL) {
+    if (replace_existing_mapping_with_dax_file_mapping(result, bytes, file_desc) == NULL) {
+      vm_exit_during_initialization(err_msg("Error in mapping Java heap at the given filesystem directory"));
+    }
+  }
+  return result;
+}
+
 // Reserve memory at an arbitrary address, only if that area is
 // available (and not reserved for something else).