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Mon, 28 Jul 2025 11:17:51 -0700 (PDT) Received: from [192.168.8.100] ([185.69.144.164]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-615400cebf0sm1481690a12.61.2025.07.28.11.17.49 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 28 Jul 2025 11:17:50 -0700 (PDT) Message-ID: <72861320-2b54-47da-993d-a82050cf56c2@gmail.com> Date: Mon, 28 Jul 2025 19:19:11 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH net-next v9 3/8] page_pool: access ->pp_magic through struct netmem_desc in page_pool_page_is_pp() To: Byungchul Park Cc: Mina Almasry , David Hildenbrand , "willy@infradead.org" , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, kernel_team@skhynix.com, kuba@kernel.org, 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, 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: <20250710082807.27402-1-byungchul@sk.com> <20250710082807.27402-4-byungchul@sk.com> <20250711011435.GC40145@system.software.com> <582f41c0-2742-4400-9c81-0d46bf4e8314@gmail.com> <20250717030858.GA26168@system.software.com> <20250722012324.GA63367@system.software.com> Content-Language: en-US From: Pavel Begunkov In-Reply-To: <20250722012324.GA63367@system.software.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 7/22/25 02:23, Byungchul Park wrote: > On Thu, Jul 17, 2025 at 12:08:58PM +0900, Byungchul Park wrote: >> On Sat, Jul 12, 2025 at 02:58:14PM +0100, Pavel Begunkov wrote: >>> On 7/11/25 02:14, Byungchul Park wrote: ...>>> commit 8fc2347fb3ff4a3fc7929c70a5a21e1128935d4a >>> Author: Pavel Begunkov >>> Date: Sat Jul 12 14:29:52 2025 +0100 >>> >>> net/mm: use PGTY for tracking page pool pages >>> >>> Currently, we use page->pp_magic to determine whether a page belongs to >>> a page pool. It's not ideal as the field is aliased with other page >>> types, and thus needs to to rely on elaborated rules to work. Add a new >>> page type for page pool. >> >> Hi Pavel, >> >> I need this work to be done to remove ->pp_magic in struct page. Will >> you let me work on this work? Or can you please refine and post this > > No response I got. Thus, I started. I hope you understand. Missed the first message and then got busy. Anyway, sure, go ahead. -- Pavel Begunkov