diff --git a/add-missing-link.patch b/add-missing-link.patch
deleted file mode 100644
index a3d0991..0000000
--- a/add-missing-link.patch
+++ /dev/null
@@ -1,15 +0,0 @@
-# HG changeset patch
-# Parent d5fb760990e45ae0db4f4b7609d8affb85101a39
-add missing link
-
-diff -r d5fb760990e4 -r c08b02a02f23 include/mdds/flat_segment_tree_def.inl
---- a/include/mdds/flat_segment_tree_def.inl	Thu Mar 24 14:52:10 2011 +0100
-+++ b/include/mdds/flat_segment_tree_def.inl	Thu Mar 24 14:53:14 2011 +0100
-@@ -438,6 +438,7 @@
-             m_left_leaf->value_leaf.value = m_init_val;
-             new_node->left = m_left_leaf;
-             new_node->right = m_left_leaf->right;
-+            m_left_leaf->right->left = new_node;
-             m_left_leaf->right = new_node;
-         }
- 
diff --git a/compare-to-the-other-node.patch b/compare-to-the-other-node.patch
deleted file mode 100644
index e0f5f11..0000000
--- a/compare-to-the-other-node.patch
+++ /dev/null
@@ -1,19 +0,0 @@
-# HG changeset patch
-# Parent 9b68208cb03bb3ece046c8b60a6a0777fea46d4a
-fix typo in node::equals
-
-diff -r 9b68208cb03b include/mdds/node.hpp
---- a/include/mdds/node.hpp	Fri Feb 11 11:24:57 2011 -0500
-+++ b/include/mdds/node.hpp	Thu Mar 24 08:27:28 2011 +0100
-@@ -154,9 +154,9 @@
-             return false;
- 
-         if (is_leaf)
--            return value_leaf == value_leaf;
-+            return value_leaf == r.value_leaf;
-         else
--            return value_nonleaf == value_nonleaf;
-+            return value_nonleaf == r.value_nonleaf;
- 
-         return true;
-     }
diff --git a/do-not-insert-new-node.patch b/do-not-insert-new-node.patch
deleted file mode 100644
index e08a5c6..0000000
--- a/do-not-insert-new-node.patch
+++ /dev/null
@@ -1,43 +0,0 @@
-# HG changeset patch
-# Parent ff6ad274f8ecb1715d366ddb53ecafd422252660
-do not insert new node if the whole range was shifted
-
-diff -r ff6ad274f8ec include/mdds/flat_segment_tree_def.inl
---- a/include/mdds/flat_segment_tree_def.inl	Thu Mar 24 14:54:16 2011 +0100
-+++ b/include/mdds/flat_segment_tree_def.inl	Thu Mar 24 14:55:26 2011 +0100
-@@ -430,16 +430,25 @@
- 
-         if (m_left_leaf->value_leaf.value != m_init_val)
-         {
--            // The leftmost leaf node has a non-initial value.  We need to
--            // insert a new node to carry that value after the shift.
--            node_ptr new_node(new node(true));
--            new_node->value_leaf.key = pos + size;
--            new_node->value_leaf.value = m_left_leaf->value_leaf.value;
--            m_left_leaf->value_leaf.value = m_init_val;
--            new_node->left = m_left_leaf;
--            new_node->right = m_left_leaf->right;
--            m_left_leaf->right->left = new_node;
--            m_left_leaf->right = new_node;
-+            if (size < m_right_leaf->value_leaf.key - m_left_leaf->value_leaf.key)
-+            {
-+                // The leftmost leaf node has a non-initial value.  We need to
-+                // insert a new node to carry that value after the shift.
-+                node_ptr new_node(new node(true));
-+                new_node->value_leaf.key = pos + size;
-+                new_node->value_leaf.value = m_left_leaf->value_leaf.value;
-+                m_left_leaf->value_leaf.value = m_init_val;
-+                new_node->left = m_left_leaf;
-+                new_node->right = m_left_leaf->right;
-+                m_left_leaf->right->left = new_node;
-+                m_left_leaf->right = new_node;
-+            }
-+            else
-+            {
-+                // We shifted out the whole range, so there would be no new
-+                // node inserted. Just set default value.
-+                m_left_leaf->value_leaf.value = m_init_val;
-+            }
-         }
- 
-         m_valid_tree = false;