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[2003:d8:2f4e:fd00:8e13:e3b5:90c8:1159]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3a6d117c0fcsm9184999f8f.62.2025.06.23.02.32.17 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 23 Jun 2025 02:32:18 -0700 (PDT) Message-ID: <8eaf52bf-4c3c-4007-afe5-a22da9f228f9@redhat.com> Date: Mon, 23 Jun 2025 11:32:16 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH net-next v6 1/9] netmem: introduce struct netmem_desc mirroring struct page To: Byungchul Park , willy@infradead.org, netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, kernel_team@skhynix.com, kuba@kernel.org, almasrymina@google.com, ilias.apalodimas@linaro.org, harry.yoo@oracle.com, hawk@kernel.org, akpm@linux-foundation.org, davem@davemloft.net, john.fastabend@gmail.com, andrew+netdev@lunn.ch, asml.silence@gmail.com, toke@redhat.com, tariqt@nvidia.com, edumazet@google.com, pabeni@redhat.com, saeedm@nvidia.com, leon@kernel.org, ast@kernel.org, daniel@iogearbox.net, lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com, vbabka@suse.cz, rppt@kernel.org, surenb@google.com, mhocko@suse.com, horms@kernel.org, linux-rdma@vger.kernel.org, bpf@vger.kernel.org, vishal.moola@gmail.com, hannes@cmpxchg.org, ziy@nvidia.com, jackmanb@google.com References: <20250620041224.46646-1-byungchul@sk.com> <20250620041224.46646-2-byungchul@sk.com> From: David Hildenbrand Autocrypt: addr=david@redhat.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 056B94000B X-Stat-Signature: 86ocad5swsbb5t4gwox8dgjstbhxkx13 X-Rspam-User: X-HE-Tag: 1750671150-331538 X-HE-Meta: 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 unwteHY2 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 20.06.25 06:12, Byungchul Park wrote: > To simplify struct page, the page pool members of struct page should be > moved to other, allowing these members to be removed from struct page. > > Introduce a network memory descriptor to store the members, struct > netmem_desc, and make it union'ed with the existing fields in struct > net_iov, allowing to organize the fields of struct net_iov. It would be great adding some result from the previous discussions in here, such as that the layout of "struct net_iov" can be changed because it is not a "struct page" overlay, what the next steps based on this patch are etc. -- Cheers, David / dhildenb