From: "Toke Høiland-Jørgensen" <toke@redhat•com>
To: Byungchul Park <byungchul@sk•com>, Jakub Kicinski <kuba@kernel•org>
Cc: linux-mm@kvack•org, netdev@vger•kernel.org,
linux-kernel@vger•kernel.org, kernel_team@skhynix•com,
harry.yoo@oracle•com, ast@kernel•org, daniel@iogearbox•net,
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edumazet@google•com, pabeni@redhat•com,
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linux-rdma@vger•kernel.org, sfr@canb•auug.org.au, dw@davidwei•uk,
ap420073@gmail•com, dtatulea@nvidia•com
Subject: Re: [RFC mm v5 1/2] page_pool: check nmdesc->pp to see its usage as page pool for net_iov not page-backed
Date: Tue, 11 Nov 2025 13:36:51 +0100 [thread overview]
Message-ID: <87346kn3to.fsf@toke.dk> (raw)
In-Reply-To: <20251111024500.GA79866@system.software.com>
Byungchul Park <byungchul@sk•com> writes:
> On Tue, Nov 11, 2025 at 11:17:41AM +0900, Byungchul Park wrote:
>> On Mon, Nov 10, 2025 at 05:56:50PM -0800, Jakub Kicinski wrote:
>> > On Tue, 11 Nov 2025 10:40:52 +0900 Byungchul Park wrote:
>> > > > > I understand the end goal. I don't understand why patch 1 is a step
>> > > > > in that direction, and you seem incapable of explaining it. So please
>> > > > > either follow my suggestion on how to proceed with patch 2 without
>> > > >
>> > > > struct page and struct netmem_desc should keep difference information.
>> > > > Even though they are sharing some fields at the moment, it should
>> > > > eventually be decoupled, which I'm working on now.
>> > >
>> > > I'm removing the shared space between struct page and struct net_iov so
>> > > as to make struct page look its own way to be shrinked and let struct
>> > > net_iov be independent.
>> > >
>> > > Introduing a new shared space for page type is non-sense. Still not
>> > > clear to you?
>> >
>> > I've spent enough time reasoning with out and suggesting alternatives.
>>
>> I'm not trying to be arguing but trying my best to understand you and
>> want to adopt your opinion. However, it's not about objection but I
>> really don't understand what you meant. Can anyone explain what he
>> meant who understood?
>
> If no objection against Jakub's opinion, I will resend with his
> alternaltive applied.
No objection from me :)
-Toke
next prev parent reply other threads:[~2025-11-11 12:36 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-03 7:51 [RFC mm v5 0/2] mm, page_pool: introduce a new page type for page pool in page type Byungchul Park
2025-11-03 7:51 ` [RFC mm v5 1/2] page_pool: check nmdesc->pp to see its usage as page pool for net_iov not page-backed Byungchul Park
2025-11-03 12:24 ` Toke Høiland-Jørgensen
2025-11-06 11:07 ` Pavel Begunkov
2025-11-07 1:33 ` Jakub Kicinski
2025-11-07 1:59 ` Byungchul Park
2025-11-07 2:08 ` Jakub Kicinski
2025-11-07 4:47 ` Byungchul Park
2025-11-08 1:41 ` Jakub Kicinski
2025-11-08 2:24 ` Byungchul Park
2025-11-08 2:29 ` Byungchul Park
2025-11-08 2:37 ` Jakub Kicinski
2025-11-10 1:09 ` Byungchul Park
2025-11-11 1:40 ` Byungchul Park
2025-11-11 1:56 ` Jakub Kicinski
2025-11-11 2:17 ` Byungchul Park
2025-11-11 2:45 ` Byungchul Park
2025-11-11 12:36 ` Toke Høiland-Jørgensen [this message]
2025-11-12 7:41 ` Byungchul Park
2025-11-15 1:23 ` Jakub Kicinski
2025-11-17 4:25 ` Byungchul Park
2025-11-03 7:51 ` [RFC mm v5 2/2] mm: introduce a new page type for page pool in page type Byungchul Park
2025-11-03 12:26 ` Toke Høiland-Jørgensen
2025-11-03 12:39 ` Byungchul Park
2025-11-03 14:50 ` Toke Høiland-Jørgensen
2025-11-06 11:08 ` Pavel Begunkov
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