rename funcs and structs to btrfs

Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/print-tree.h b/fs/btrfs/print-tree.h
index 3c1e9a3..e8d0b84 100644
--- a/fs/btrfs/print-tree.h
+++ b/fs/btrfs/print-tree.h
@@ -1,3 +1,3 @@
 
-void print_leaf(struct leaf *l);
-void print_tree(struct ctree_root *root, struct tree_buffer *t);
+void btrfs_print_leaf(struct btrfs_leaf *l);
+void btrfs_print_tree(struct btrfs_root *root, struct btrfs_buffer *t);