Subject: Re: [RFC PATCH V3 11/11] HV/Storvsc: Add Isolation VM support for storvsc driver

From: Christoph Hellwig <[email-masked]>
Date: Mon, 7 Jun 2021 08:46:03 +0200

On Sun, May 30, 2021 at 11:06:28AM -0400, Tianyu Lan wrote:
> +				for (i = 0; i < request->hvpg_count; i++)
> +					dma_unmap_page(&device->device,
> +							request->dma_range[i].dma,
> +							request->dma_range[i].mapping_size,
> +							request->vstor_packet.vm_srb.data_in
> +							     == READ_TYPE ?
> +							DMA_FROM_DEVICE : DMA_TO_DEVICE);
> +				kfree(request->dma_range);

Unreadably long lines.  You probably want to factor the quoted code into
a little readable helper and do the same for the map side.