Ignore soft heap limit when reserving space.

src/spaces.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2199 matching lines @@
 
   SetTop(new_area->address(), new_area->address() + size_in_bytes);
   Allocate(size_in_bytes);
   return true;
 }
 
 
 // You have to call this last, since the implementation from PagedSpace
 // doesn't know that memory was 'promised' to large object space.
 bool LargeObjectSpace::ReserveSpace(int bytes) {
-  return heap()->OldGenerationSpaceAvailable() >= bytes;
+  return heap()->OldGenerationCapacityAvailable() >= bytes &&
+         (!heap()->incremental_marking()->IsStopped() ||
+           heap()->OldGenerationSpaceAvailable() >= bytes);
 }
 
 
 bool PagedSpace::AdvanceSweeper(intptr_t bytes_to_sweep) {
   if (IsSweepingComplete()) return true;
 
   intptr_t freed_bytes = 0;
   Page* p = first_unswept_page_;
   do {
     Page* next_page = p->next_page();
@@ skipping 551 matching lines @@
     object->ShortPrint();
     PrintF("\n");
   }
   printf(" --------------------------------------\n");
   printf(" Marked: %x, LiveCount: %x\n", mark_size, LiveBytes());
 }
 
 #endif  // DEBUG
 
 } }  // namespace v8::internal