linux-kernel - Re: [PATCH net-next 6/9] netmem: remove __netmem_get

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Message-ID: <CAC_iWjLbwkXTKfu27umzu4PmmxHAi7TN76t_VNHiS8WxCM0UQA@mail.gmail.com>
Date: Tue, 10 Jun 2025 14:11:34 +0300
From: Ilias Apalodimas <ilias.apalodimas@...aro.org>
To: Byungchul Park <byungchul@...com>
Cc: willy@...radead.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-mm@...ck.org, kernel_team@...ynix.com, kuba@...nel.org, 
	almasrymina@...gle.com, harry.yoo@...cle.com, hawk@...nel.org, 
	akpm@...ux-foundation.org, davem@...emloft.net, john.fastabend@...il.com, 
	andrew+netdev@...n.ch, asml.silence@...il.com, toke@...hat.com, 
	tariqt@...dia.com, edumazet@...gle.com, pabeni@...hat.com, saeedm@...dia.com, 
	leon@...nel.org, ast@...nel.org, daniel@...earbox.net, david@...hat.com, 
	lorenzo.stoakes@...cle.com, Liam.Howlett@...cle.com, vbabka@...e.cz, 
	rppt@...nel.org, surenb@...gle.com, mhocko@...e.com, horms@...nel.org, 
	linux-rdma@...r.kernel.org, bpf@...r.kernel.org, vishal.moola@...il.com
Subject: Re: [PATCH net-next 6/9] netmem: remove __netmem_get_pp()

On Mon, 9 Jun 2025 at 07:32, Byungchul Park <byungchul@...com> wrote:
>
> There are no users of __netmem_get_pp().  Remove it.
>
> Signed-off-by: Byungchul Park <byungchul@...com>
> Reviewed-by: Mina Almasry <almasrymina@...gle.com>
> Reviewed-by: Toke Høiland-Jørgensen <toke@...hat.com>
> Reviewed-by: Pavel Begunkov <asml.silence@...il.com>
> ---

Reviewed-by: Ilias Apalodimas <ilias.apalodimas@...aro.org>

>  include/net/netmem.h | 16 ----------------
>  1 file changed, 16 deletions(-)
>
> diff --git a/include/net/netmem.h b/include/net/netmem.h
> index 65bb87835664..d4066fcb1fee 100644
> --- a/include/net/netmem.h
> +++ b/include/net/netmem.h
> @@ -234,22 +234,6 @@ static inline struct net_iov *__netmem_clear_lsb(netmem_ref netmem)
>         return (struct net_iov *)((__force unsigned long)netmem & ~NET_IOV);
>  }
>
> -/**
> - * __netmem_get_pp - unsafely get pointer to the &page_pool backing @netmem
> - * @netmem: netmem reference to get the pointer from
> - *
> - * Unsafe version of netmem_get_pp(). When @netmem is always page-backed,
> - * e.g. when it's a header buffer, performs faster and generates smaller
> - * object code (avoids clearing the LSB). When @netmem points to IOV,
> - * provokes invalid memory access.
> - *
> - * Return: pointer to the &page_pool (garbage if @netmem is not page-backed).
> - */
> -static inline struct page_pool *__netmem_get_pp(netmem_ref netmem)
> -{
> -       return __netmem_to_page(netmem)->pp;
> -}
> -
>  static inline struct page_pool *netmem_get_pp(netmem_ref netmem)
>  {
>         return __netmem_clear_lsb(netmem)->pp;
> --
> 2.17.1
>