btrfs: root->fs_info cleanup, btrfs_calc_{trans,trunc}_metadata_size

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index b8aaf1c..bec5aa0 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -502,7 +502,8 @@ start_transaction(struct btrfs_root *root, unsigned int num_items,
 		if (ret)
 			return ERR_PTR(ret);
 
-		num_bytes = btrfs_calc_trans_metadata_size(root, num_items);
+		num_bytes = btrfs_calc_trans_metadata_size(root->fs_info,
+							   num_items);
 		/*
 		 * Do the reservation for the relocation root creation
 		 */
@@ -624,7 +625,7 @@ struct btrfs_trans_handle *btrfs_start_transaction_fallback_global_rsv(
 	if (IS_ERR(trans))
 		return trans;
 
-	num_bytes = btrfs_calc_trans_metadata_size(root, num_items);
+	num_bytes = btrfs_calc_trans_metadata_size(root->fs_info, num_items);
 	ret = btrfs_cond_migrate_bytes(root->fs_info,
 				       &root->fs_info->trans_block_rsv,
 				       num_bytes,