Re: [PATCH 3/4] macvtap: Use iovec iterators

[Al Viro]

On Thu, Nov 06, 2014 at 04:28:20PM +0800, Herbert Xu wrote:

> +		if (copy_to_iter(&vnet_hdr, sizeof(vnet_hdr), iter))
>  			return -EFAULT;

Again, wrong calling conventions.  It returns how much has it copied.

> +		ret = copy_to_iter(&veth, sizeof(veth), iter);
> +		if (ret || !iov_iter_count(iter))
>  			goto done;
Ditto.
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