--- old/src/hotspot/share/gc/shared/collectedHeap.cpp	2018-09-14 13:44:04.930188788 +0200
+++ new/src/hotspot/share/gc/shared/collectedHeap.cpp	2018-09-14 13:44:04.625175600 +0200
@@ -502,12 +502,13 @@
 }
 
 void CollectedHeap::resize_all_tlabs() {
-  if (UseTLAB) {
-    assert(SafepointSynchronize::is_at_safepoint() ||
-         !is_init_completed(),
-         "should only resize tlabs at safepoint");
+  assert(SafepointSynchronize::is_at_safepoint() || !is_init_completed(),
+         "Should only resize tlabs at safepoint");
 
-    ThreadLocalAllocBuffer::resize_all_tlabs();
+  if (UseTLAB && ResizeTLAB) {
+    for (JavaThreadIteratorWithHandle jtiwh; JavaThread *thread = jtiwh.next(); ) {
+      thread->tlab().resize();
+    }
   }
 }