Re: [PATCH v2 04/10] fsdax: Introduce dax_iomap_cow_copy()

[Christoph Hellwig <hch@xxxxxx>]

On Fri, Feb 26, 2021 at 08:20:24AM +0800, Shiyang Ruan wrote:
> +	if (!copy_edge) {
> +		ret = copy_mc_to_kernel(daddr, saddr, length);
> +		return ret;

No need for the ret variable here, this can be:

	if (!copy_edge)
		return copy_mc_to_kernel(daddr, saddr, length);

Otherwise looks good:

Reviewed-by: Christoph Hellwig <hch@xxxxxx>