On Tue, Mar 02, 2021 at 08:49:06PM +0200, Ilias Apalodimas wrote:
> Hi Mel,
>
> Can you please CC me in future revisions. I almost missed that!
>
Will do.
> On Mon, Mar 01, 2021 at 04:11:59PM +0000, Mel Gorman wrote:
> > From: Jesper Dangaard Brouer <brouer@xxxxxxxxxx>
> >
> > In preparation for next patch, move the dma mapping into its own
> > function, as this will make it easier to follow the changes.
> >
> > V2: make page_pool_dma_map return boolean (Ilias)
> >
>
> [...]
>
> > @@ -211,30 +234,14 @@ static struct page *__page_pool_alloc_pages_slow(struct page_pool *pool,
> > if (!page)
> > return NULL;
> >
> > - if (!(pool->p.flags & PP_FLAG_DMA_MAP))
> > - goto skip_dma_map;
> > -
> > - /* Setup DMA mapping: use 'struct page' area for storing DMA-addr
> > - * since dma_addr_t can be either 32 or 64 bits and does not always fit
> > - * into page private data (i.e 32bit cpu with 64bit DMA caps)
> > - * This mapping is kept for lifetime of page, until leaving pool.
> > - */
> > - dma = dma_map_page_attrs(pool->p.dev, page, 0,
> > - (PAGE_SIZE << pool->p.order),
> > - pool->p.dma_dir, DMA_ATTR_SKIP_CPU_SYNC);
> > - if (dma_mapping_error(pool->p.dev, dma)) {
> > + if (pp_flags & PP_FLAG_DMA_MAP &&
>
> Nit pick but can we have if ((pp_flags & PP_FLAG_DMA_MAP) && ...
>
Done.
> [...]
>
> >
>
> Otherwise
> Reviewed-by: Ilias Apalodimas <ilias.apalodimas@xxxxxxxxxx>
Thanks. I'll wait for other review feedback before sending a V2.
--
Mel Gorman
SUSE Labs
