On Thu, Jul 10, 2025 at 11:25:12AM -0700, Mina Almasry wrote:
> On Thu, Jul 10, 2025 at 1:28 AM Byungchul Park <byungchul@xxxxxx> wrote:
> >
> > To eliminate the use of the page pool fields in struct page, the page
> > pool code should use netmem descriptor and APIs instead.
> >
> > However, __netmem_get_pp() still accesses ->pp via struct page. So
> > change it to use struct netmem_desc instead, since ->pp no longer will
> > be available in struct page.
> >
> > Signed-off-by: Byungchul Park <byungchul@xxxxxx>
> > ---
> > include/net/netmem.h | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/include/net/netmem.h b/include/net/netmem.h
> > index 11e9de45efcb..283b4a997fbc 100644
> > --- a/include/net/netmem.h
> > +++ b/include/net/netmem.h
> > @@ -306,7 +306,7 @@ static inline struct net_iov *__netmem_clear_lsb(netmem_ref netmem)
> > */
> > static inline struct page_pool *__netmem_get_pp(netmem_ref netmem)
> > {
> > - return __netmem_to_page(netmem)->pp;
> > + return __netmem_to_nmdesc(netmem)->pp;
> > }
> >
>
> __netmem_to_nmdesc should introduced with this patch.
Okay.
> But also, I wonder why not modify all the callsites of
> __netmem_to_page to the new __netmem_to_nmdesc and delete the
> __nemem_to_page helper?
It'd be better. I will. Thanks.
Byungchul
>
>
> --
> Thanks,
> Mina
