On Sat, Apr 17, 2021 at 09:13:45PM +0000, David Laight wrote:
> > struct { /* page_pool used by netstack */
> > - /**
> > - * @dma_addr: might require a 64-bit value on
> > - * 32-bit architectures.
> > - */
> > + unsigned long pp_magic;
> > + unsigned long xmi;
> > + unsigned long _pp_mapping_pad;
> > unsigned long dma_addr[2];
> > };
>
> You've deleted the comment.
Yes. It no longer added any value. You can see dma_addr now occupies
two words.
> I also think there should be a comment that dma_addr[0]
> must be aliased to ->index.
That's not a requirement. Moving the pfmemalloc indicator is a
requirement so that we _can_ use index, but there's no requirement about
how index is used.
