linux-kernel - Re: [PATCH linux-next v3] mm, page_pool: introduce a new page type for page pool in page type

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Message-ID: <20250811010917.GB28363@system.software.com>
Date: Mon, 11 Aug 2025 10:09:17 +0900
From: Byungchul Park <byungchul@...com>
To: Pavel Begunkov <asml.silence@...il.com>
Cc: linux-mm@...ck.org, netdev@...r.kernel.org,
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Subject: Re: [PATCH linux-next v3] mm, page_pool: introduce a new page type
 for page pool in page type

On Sun, Aug 10, 2025 at 09:21:45PM +0100, Pavel Begunkov wrote:
> On 7/29/25 12:02, Byungchul Park wrote:
> > Changes from v2:
> >       1. Rebase on linux-next as of Jul 29.
> >       2. Skip 'niov->pp = NULL' when it's allocated using __GFP_ZERO.
> >       3. Change trivial coding style. (feedbacked by Mina)
> >       4. Add Co-developed-by, Acked-by, and Reviewed-by properly.
> >          Thanks to all.
> > 
> > Changes from v1:
> >       1. Rebase on linux-next.
> >       2. Initialize net_iov->pp = NULL when allocating net_iov in
> >          net_devmem_bind_dmabuf() and io_zcrx_create_area().
> >       3. Use ->pp for net_iov to identify if it's pp rather than
> >          always consider net_iov as pp.
> >       4. Add Suggested-by: David Hildenbrand <david@...hat.com>.
> > 
> > ---8<---
> >  From 88bcb9907a0cef65a9c0adf35e144f9eb67e0542 Mon Sep 17 00:00:00 2001
> > From: Byungchul Park <byungchul@...com>
> > Date: Tue, 29 Jul 2025 19:49:44 +0900
> > Subject: [PATCH linux-next v3] mm, page_pool: introduce a new page type for page pool in page type
> 
> That will conflict with "netmem: replace __netmem_clear_lsb() with
> netmem_to_nmdesc()", it'll need some coordination.

Indeed.  It'd better work on top of "netmem: replace __netmem_clear_lsb()
with netmem_to_nmdesc()" then.  You said you are going to take the patch.
Please lemme know the progress so that I can track and re-work on this.

	Byungchul

> --
> Pavel Begunkov
>