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([2620:10d:c092:600::1:d66f]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-6072f9da0besm516701a12.42.2025.06.05.03.44.34 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 05 Jun 2025 03:44:35 -0700 (PDT) Message-ID: <5838de86-7469-479c-a9eb-973dca75e557@gmail.com> Date: Thu, 5 Jun 2025 11:45:55 +0100 Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC v4 16/18] netmem: introduce a netmem API, virt_to_head_netmem() 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, toke@redhat.com, tariqt@nvidia.com, edumazet@google.com, pabeni@redhat.com, saeedm@nvidia.com, leon@kernel.org, ast@kernel.org, daniel@iogearbox.net, david@redhat.com, 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 References: <20250604025246.61616-1-byungchul@sk.com> <20250604025246.61616-17-byungchul@sk.com> Content-Language: en-US From: Pavel Begunkov In-Reply-To: <20250604025246.61616-17-byungchul@sk.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 6/4/25 03:52, Byungchul Park 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. Reviewed-by: Pavel Begunkov -- Pavel Begunkov