diff -r 2dd52dea6d28 -r 7b0e9cba0307 src/share/vm/runtime/thread.cpp
--- a/src/share/vm/runtime/thread.cpp	Tue Jan 12 14:56:46 2010 -0800
+++ b/src/share/vm/runtime/thread.cpp	Wed Jan 13 15:26:39 2010 -0800
@@ -2357,9 +2357,8 @@
 };
 
 void JavaThread::oops_do(OopClosure* f, CodeBlobClosure* cf) {
-  // Flush deferred store-barriers, if any, associated with
-  // initializing stores done by this JavaThread in the current epoch.
-  Universe::heap()->flush_deferred_store_barrier(this);
+  // Verify that the deferred card marks have been flushed.
+  assert(deferred_card_mark().is_empty(), "Should be empty during GC");
 
   // The ThreadProfiler oops_do is done from FlatProfiler::oops_do
   // since there may be more than one thread using each ThreadProfiler.