On Thu, Jul 10, 2025 at 1:28 AM Byungchul Park <byungchul@xxxxxx> wrote:
>
> To eliminate the use of struct page in page pool, the page pool code
> should use netmem descriptor and APIs instead.
>
> As part of the work, introduce a netmem API to convert a virtual address
> to a head netmem allowing the code to use it rather than the existing
> API, virt_to_head_page() for struct page.
>
> Signed-off-by: Byungchul Park <byungchul@xxxxxx>
> Reviewed-by: Toke Høiland-Jørgensen <toke@xxxxxxxxxx>
> Reviewed-by: Pavel Begunkov <asml.silence@xxxxxxxxx>
> Reviewed-by: Mina Almasry <almasrymina@xxxxxxxxxx>
> ---
> include/net/netmem.h | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/include/net/netmem.h b/include/net/netmem.h
> index 283b4a997fbc..b92c7f15166a 100644
> --- a/include/net/netmem.h
> +++ b/include/net/netmem.h
> @@ -372,6 +372,13 @@ static inline bool page_pool_page_is_pp(struct page *page)
> }
> #endif
>
> +static inline netmem_ref virt_to_head_netmem(const void *x)
> +{
> + netmem_ref netmem = virt_to_netmem(x);
> +
> + return netmem_compound_head(netmem);
> +}
> +
Squash with the first user of this helper please.
--
Thanks,
Mina
