src/hotspot/os/linux/cgroupV1Subsystem_linux.hpp

*** 98,10 ***
--- 98,11 ---
      }
      const char* subsystem_path() override { return reader()->subsystem_path(); }
      const char* mount_point() override { return reader()->mount_point(); }
      const char* cgroup_path() override { return reader()->cgroup_path(); }
    private:
+     jlong uses_mem_hierarchy();
      jlong read_mem_swappiness();
      jlong read_mem_swap(julong upper_memsw_bound);
  
    public:
      CgroupV1MemoryController(const CgroupV1Controller& reader)