> However, your older patch series looks like you want this behavior also
> in areas which are mapped by dma_map_sg(), do you?. Still, adding two
> functions of the kind like above, if necessary, might still be
> preferable to changing the call parameters of existing functions or to
> overloading enum dma_data_direction.
Yes, the _sg variants are needed, because we want to map userspace
regions with this attribute and there's of course no guarantee that
userspace memory is contiguous.
- R.
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