diff --git a/diskTreeComponent.cpp b/diskTreeComponent.cpp
index 7c033b8..05aee37 100644
--- a/diskTreeComponent.cpp
+++ b/diskTreeComponent.cpp
@@ -23,7 +23,7 @@
 // LOGTREE implementation
 /////////////////////////////////////////////////////////////////
 
-const RegionAllocConf_t diskTreeComponent::internalNodes::REGION_ALLOC_STATIC_INITIALIZER = { {0,0,-1}, 0, -1, -1, 1000 };
+const diskTreeComponent::internalNodes::RegionAllocConf_t diskTreeComponent::internalNodes::REGION_ALLOC_STATIC_INITIALIZER = { {0,0,-1}, 0, -1, -1, 1000 };
 
 //LSM_ROOT_PAGE
 
diff --git a/diskTreeComponent.h b/diskTreeComponent.h
index 1db4d7c..41ff56d 100644
--- a/diskTreeComponent.h
+++ b/diskTreeComponent.h
@@ -22,27 +22,28 @@
 #include "tuplemerger.h"
 #include "datatuple.h"
 
-
-typedef struct RegionAllocConf_t
-{
-  recordid regionList;
-  pageid_t regionCount;
-  pageid_t nextPage;
-  pageid_t endOfRegion;
-  pageid_t regionSize;
-} RegionAllocConf_t;
-
-struct indexnode_rec {
-  pageid_t ptr;
-};
-
-typedef pageid_t(*diskTreeComponent_page_allocator_t)(int, void *);
-typedef void(*diskTreeComponent_page_deallocator_t)(int, void *);
-
 class diskTreeComponent {
+
 public:
   class internalNodes{
   public:
+    struct indexnode_rec {
+      pageid_t ptr;
+    };
+
+    typedef struct RegionAllocConf_t
+    {
+      recordid regionList;
+      pageid_t regionCount;
+      pageid_t nextPage;
+      pageid_t endOfRegion;
+      pageid_t regionSize;
+    } RegionAllocConf_t;
+
+    typedef pageid_t(*diskTreeComponent_page_allocator_t)(int, void *);
+    typedef void(*diskTreeComponent_page_deallocator_t)(int, void *);
+
+
     internalNodes(int xid): region_alloc(new DataPage<datatuple>::RegionAllocator(xid, 10000)) {create(xid);}  // XXX shouldn't hardcode region size.
     internalNodes(int xid, recordid root, recordid state, recordid dp_state)
     : tree_state(state),
diff --git a/logstore.cpp b/logstore.cpp
index 019a539..9ed908e 100644
--- a/logstore.cpp
+++ b/logstore.cpp
@@ -467,7 +467,7 @@ DataPage<datatuple>* logtable::insertTuple(int xid, datatuple *tuple, diskTreeCo
     }
     
 
-    RegionAllocConf_t alloc_conf;
+    diskTreeComponent::internalNodes::RegionAllocConf_t alloc_conf;
     //insert the record key and id of the first page of the datapage to the diskTreeComponent
     Tread(xid,ltree->get_tree_state(), &alloc_conf);
     diskTreeComponent::internalNodes::appendPage(xid, ltree->get_root_rec(), ltree->lastLeaf,
diff --git a/logstore.h b/logstore.h
index f471918..8086b2b 100644
--- a/logstore.h
+++ b/logstore.h
@@ -107,7 +107,7 @@ public:
         recordid c1_dp_state;
     };
 
-    const static RegionAllocConf_t DATAPAGE_REGION_ALLOC_STATIC_INITIALIZER;
+    const static diskTreeComponent::internalNodes::RegionAllocConf_t DATAPAGE_REGION_ALLOC_STATIC_INITIALIZER;
 
     logtable_mergedata * mergedata;
     rwl * header_lock;
diff --git a/test/check_datapage.cpp b/test/check_datapage.cpp
index 10f7d7f..1084f69 100644
--- a/test/check_datapage.cpp
+++ b/test/check_datapage.cpp
@@ -51,7 +51,7 @@ void insertProbeIter(size_t NUM_ENTRIES)
     DataPage<datatuple>::RegionAllocator * alloc
       = new DataPage<datatuple>::RegionAllocator(xid, 10000); // ~ 10 datapages per region.
 
-    recordid alloc_state = Talloc(xid,sizeof(RegionAllocConf_t));
+    recordid alloc_state = Talloc(xid,sizeof(diskTreeComponent::internalNodes::RegionAllocConf_t));
     
     Tset(xid,alloc_state, &diskTreeComponent::internalNodes::REGION_ALLOC_STATIC_INITIALIZER);
 
diff --git a/test/check_logtree.cpp b/test/check_logtree.cpp
index 13eb582..173e710 100644
--- a/test/check_logtree.cpp
+++ b/test/check_logtree.cpp
@@ -79,7 +79,7 @@ void insertProbeIter_str(int  NUM_ENTRIES)
         //printf("TlsmAppendPage %d\n",i);
 
         recordid rid = lt->get_tree_state();
-        RegionAllocConf_t alloc_conf;
+        diskTreeComponent::internalNodes::RegionAllocConf_t alloc_conf;
         Tread(xid,rid,&alloc_conf);
       
         diskTreeComponent::internalNodes::appendPage(xid, tree, lt->lastLeaf, currkey, keylen, lt->alloc_region, &alloc_conf, i + OFFSET);
@@ -196,7 +196,7 @@ void insertProbeIter_int(int  NUM_ENTRIES)
         printf("TlsmAppendPage %d\n",i);
 
         recordid rid = lt->get_tree_state();
-        RegionAllocConf_t alloc_conf;
+        diskTreeComponent::internalNodes::RegionAllocConf_t alloc_conf;
         Tread(xid,rid,&alloc_conf);
       
         diskTreeComponent::internalNodes::appendPage(xid, tree, lt->lastLeaf, currkey, keylen, lt->alloc_region, &alloc_conf, i + OFFSET);
diff --git a/test/check_mergetuple.cpp b/test/check_mergetuple.cpp
index 1fe91cf..0b60982 100644
--- a/test/check_mergetuple.cpp
+++ b/test/check_mergetuple.cpp
@@ -50,8 +50,6 @@ void insertProbeIter(size_t NUM_ENTRIES)
         printf("size partition %d is %d\n", i+1, key_arr->size());
     }
 
-
-    
     key_v_t * key_arr = new key_v_t;
     
     std::vector<key_v_t::iterator*> iters;