diff --git a/fs/btrfs/disk-io.h b/fs/btrfs/disk-io.h
index aa9f56c..444ebb0 100644
--- a/fs/btrfs/disk-io.h
+++ b/fs/btrfs/disk-io.h
@@ -44,6 +44,7 @@
 u64 bh_blocknr(struct buffer_head *bh);
 int btrfs_insert_dev_radix(struct btrfs_root *root,
 			   struct block_device *bdev,
+			   u64 device_id,
 			   u64 block_start,
 			   u64 num_blocks);
 int btrfs_map_bh_to_logical(struct btrfs_root *root, struct buffer_head *bh,