diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index c0ca9c3..4e57fe6 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -157,7 +157,6 @@
 	key.objectid = inode->i_ino;
 	key.offset = start;
 	btrfs_set_key_type(&key, BTRFS_EXTENT_DATA_KEY);
-	inode_add_bytes(inode, size);
 	datasize = btrfs_file_extent_calc_inline_size(cur_size);
 
 	inode_add_bytes(inode, size);
@@ -920,8 +919,8 @@
 	struct btrfs_ordered_sum *sums;
 	LIST_HEAD(list);
 
-	ret = btrfs_lookup_csums_range(root, bytenr, bytenr + num_bytes - 1,
-				       &list);
+	ret = btrfs_lookup_csums_range(root->fs_info->csum_root, bytenr,
+				       bytenr + num_bytes - 1, &list);
 	if (ret == 0 && list_empty(&list))
 		return 0;