--- old/src/hotspot/share/gc/shared/collectedHeap.cpp	2018-02-12 20:05:04.183769829 -0800
+++ new/src/hotspot/share/gc/shared/collectedHeap.cpp	2018-02-12 20:05:03.927770814 -0800
@@ -302,7 +302,7 @@
 }
 
 HeapWord* CollectedHeap::allocate_sampled_object(Thread* thread, size_t size) {
-  thread->tlab().set_back_actual_end();
+  thread->tlab().set_back_allocation_end();
 
   // The tlab could still have space after this sample.
   return thread->tlab().allocate(size);
@@ -315,7 +315,7 @@
   HeapWord* obj = NULL;
   if (should_sample) {
     // Remember the tlab end to fix up the sampling rate.
-    HeapWord* tlab_old_end = thread->tlab().end();
+    HeapWord* tlab_old_end = thread->tlab().current_end();
     obj = allocate_sampled_object(thread, size);
 
     // If we did allocate in this tlab, sample it. Otherwise, we wait for the