src/share/vm/gc_implementation/g1/g1SATBCardTableModRefBS.cpp

@@ -124,10 +124,11 @@
   verify_region(mr, g1_young_gen,  true);
 }
 #endif
 
 void G1SATBCardTableLoggingModRefBSChangedListener::on_commit(uint start_idx, size_t num_regions, bool zero_filled) {
+  // Default value for a clean card on the card table is -1. So we cannot take advantage of the zero_filled parameter.
   MemRegion mr(G1CollectedHeap::heap()->bottom_addr_for_region(start_idx), num_regions * HeapRegion::GrainWords);
   _card_table->clear(mr);
 }
 
 G1SATBCardTableLoggingModRefBS::