> -s64 dax_iomap_zero(loff_t pos, u64 length, struct iomap *iomap)> +s64 dax_iomap_zero(struct iomap_iter *iter, loff_t pos, u64 length)I think we can also mark the iter const.Otherwise looks good:Reviewed-by: Christoph Hellwig <hch@lst.de>