f2fs: correct comment of f2fs_exist_written_data

Function parameter mode could be TRANS_DIR_INO.

Signed-off-by: Jack Qiu <jack.qiu@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
1 file changed