Fix an array copy benchmark regression.

Add different page release modes to rosalloc.

Bug: 12064551
Change-Id: Ib837bbd1a2757741a4e2743e0a1272bf46a30252
diff --git a/runtime/gc/space/dlmalloc_space.h b/runtime/gc/space/dlmalloc_space.h
index d18d4ad..c529314 100644
--- a/runtime/gc/space/dlmalloc_space.h
+++ b/runtime/gc/space/dlmalloc_space.h
@@ -117,7 +117,7 @@
   mirror::Object* AllocWithoutGrowthLocked(Thread* self, size_t num_bytes, size_t* bytes_allocated)
       EXCLUSIVE_LOCKS_REQUIRED(lock_);
 
-  void* CreateAllocator(void* base, size_t morecore_start, size_t initial_size) {
+  void* CreateAllocator(void* base, size_t morecore_start, size_t initial_size, bool /*low_memory_mode*/) {
     return CreateMspace(base, morecore_start, initial_size);
   }
   static void* CreateMspace(void* base, size_t morecore_start, size_t initial_size);