On Tue, 2014-04-22 at 15:07 +0800, Jiang Liu wrote:
> +       size_t size = 0;
> +#if 0
> +       /* current the third argument of intel_unmap_page is unsued */
> +       int i;
> +       struct scatterlist *sg;
>  
> -       freelist = domain_unmap(domain, start_pfn, last_pfn);
> +       for_each_sg(sglist, sg, nelems, i)
> +               size += sg->length;
> +#endif

Please don't do that. If you want to rely on the fact that
intel_unmap_page() currently just uses the size from the IOVA it finds,
then split it out into a separate function which explicitly does
precisely that. And call that new function from both intel_unmap_sg()
and intel_unmap_page().

-- 
David Woodhouse                            Open Source Technology Centre
david.woodho...@intel.com                              Intel Corporation

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