--- /dev/null	2019-06-10 08:42:37.317240407 +0100
+++ new/src/hotspot/os_cpu/linux_aarch64/gc/z/zBackingPath_linux_aarch64.hpp	2019-06-10 14:25:46.754314175 +0100
@@ -0,0 +1,52 @@
+/*
+ * Copyright (c) 2016, 2019, 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+#ifndef OS_CPU_LINUX_AARCH64_GC_Z_ZBACKINGPATH_LINUX_AARCH64_HPP
+#define OS_CPU_LINUX_AARCH64_GC_Z_ZBACKINGPATH_LINUX_AARCH64_HPP
+
+#include "gc/z/zArray.hpp"
+#include "memory/allocation.hpp"
+
+class ZBackingPath : public StackObj {
+private:
+  char* _path;
+
+  char* get_mountpoint(const char* line,
+                       const char* filesystem) const;
+  void get_mountpoints(const char* filesystem,
+                       ZArray<char*>* mountpoints) const;
+  void free_mountpoints(ZArray<char*>* mountpoints) const;
+  char* find_preferred_mountpoint(const char* filesystem,
+                                  ZArray<char*>* mountpoints,
+                                  const char** preferred_mountpoints) const;
+  char* find_mountpoint(const char* filesystem,
+                        const char** preferred_mountpoints) const;
+
+public:
+  ZBackingPath(const char* filesystem, const char** preferred_mountpoints);
+  ~ZBackingPath();
+
+  const char* get() const;
+};
+
+#endif // OS_CPU_LINUX_AARCH64_GC_Z_ZBACKINGPATH_LINUX_AARCH64_HPP