diff --git a/ctree.h b/ctree.h
index fb1f5d51..5cf28be9 100644
--- a/ctree.h
+++ b/ctree.h
@@ -223,6 +223,7 @@ struct btrfs_file_extent_item {
 } __attribute__ ((__packed__));
 
 struct btrfs_csum_item {
+	__le64 extent_offset;
 	u8 csum[BTRFS_CSUM_SIZE];
 } __attribute__ ((__packed__));
 
@@ -911,6 +912,17 @@ static inline void btrfs_set_file_extent_num_blocks(struct
 	e->num_blocks = cpu_to_le64(val);
 }
 
+static inline u64 btrfs_csum_extent_offset(struct btrfs_csum_item *c)
+{
+	return le64_to_cpu(c->extent_offset);
+}
+
+static inline void btrfs_set_csum_extent_offset(struct btrfs_csum_item *c,
+						u64 val)
+{
+	c->extent_offset = cpu_to_le64(val);
+}
+
 static inline u16 btrfs_device_pathlen(struct btrfs_device_item *d)
 {
 	return le16_to_cpu(d->pathlen);
diff --git a/print-tree.c b/print-tree.c
index 0250d333..2fac77ef 100644
--- a/print-tree.c
+++ b/print-tree.c
@@ -16,6 +16,7 @@ void btrfs_print_leaf(struct btrfs_root *root, struct btrfs_leaf *l)
 	struct btrfs_device_item *devi;
 	struct btrfs_inode_item *ii;
 	struct btrfs_file_extent_item *fi;
+	struct btrfs_csum_item *ci;
 	char *p;
 	u32 type;
 
@@ -76,6 +77,11 @@ void btrfs_print_leaf(struct btrfs_root *root, struct btrfs_leaf *l)
 			printf("\t\textent data refs %u\n",
 				btrfs_extent_refs(ei));
 			break;
+		case BTRFS_CSUM_ITEM_KEY:
+			ci = btrfs_item_ptr(l, i,
+					    struct btrfs_csum_item);
+			printf("\t\tcsum item\n");
+			break;
 		case BTRFS_EXTENT_DATA_KEY:
 			fi = btrfs_item_ptr(l, i,
 					    struct btrfs_file_extent_item);