Btrfs: add a radix back bit tree

Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index e32ddff..758a62a 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -104,7 +104,8 @@
 	/* FIXME: don't be stupid */
 	if (!btrfs_super_root(disk_super))
 		return NULL;
-	INIT_RADIX_TREE(&fs_info->pinned_radix, GFP_KERNEL);
+	init_bit_radix(&fs_info->pinned_radix);
+	init_bit_radix(&fs_info->pending_del_radix);
 	fs_info->running_transaction = NULL;
 	fs_info->fs_root = root;
 	fs_info->tree_root = tree_root;