--- a/src/hotspot/share/gc/shared/threadLocalAllocBuffer.hpp	Wed May 02 02:36:17 2018 -0700
+++ b/src/hotspot/share/gc/shared/threadLocalAllocBuffer.hpp	Wed May 02 13:44:46 2018 +0200
@@ -141,6 +141,9 @@
   // Otherwise return 0;
   inline size_t compute_size(size_t obj_size);
 
+  // Compute the minimal needed tlab size for the given object size.
+  static inline size_t compute_min_size(size_t obj_size);
+
   // Record slow allocation
   inline void record_slow_allocation(size_t obj_size);