Re: [PATCH v9 4/8] fsdax: Convert dax_iomap_zero to iter model

[Christoph Hellwig]

> -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@xxxxxx>