Re: [PATCH v5 4/7] dma-iommu: fold _swiotlb helpers into callers

[Christoph Hellwig]

> +		if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC) &&
> +		    (dir == DMA_TO_DEVICE ||
> +		     dir == DMA_BIDIRECTIONAL)) {

Nit: the two dire checks easily fit onto a single line and are easier to
follow that way.

Otherwise looks good:

Reviewed-by: Christoph Hellwig <hch@xxxxxx>