btrfs: make btrfs_truncate_inode_items take btrfs_inode

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index 58bd2d3..d8010df 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -273,7 +273,7 @@ int btrfs_truncate_free_space_cache(struct btrfs_trans_handle *trans,
 	 * We skip the throttling logic for free space cache inodes, so we don't
 	 * need to check for -EAGAIN.
 	 */
-	ret = btrfs_truncate_inode_items(trans, root, inode,
+	ret = btrfs_truncate_inode_items(trans, root, BTRFS_I(inode),
 					 0, BTRFS_EXTENT_DATA_KEY);
 	if (ret)
 		goto fail;