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[47.55.120.4]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-8846e54c32csm48350666d6.37.2025.11.21.15.44.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 21 Nov 2025 15:44:56 -0800 (PST) Received: from jgg by wakko with local (Exim 4.97) (envelope-from ) id 1vMaoC-00000001bmD-0arX; Fri, 21 Nov 2025 19:44:56 -0400 Date: Fri, 21 Nov 2025 19:44:56 -0400 From: Jason Gunthorpe To: Lorenzo Stoakes Cc: Andrew Morton , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , David Hildenbrand , Alexander Gordeev , Gerald Schaefer , Heiko Carstens , Vasily Gorbik , Sven Schnelle , Peter Xu , Alexander Viro , Christian Brauner , Jan Kara , Arnd Bergmann , Zi Yan , Baolin Wang , "Liam R . Howlett" , Nico Pache , Ryan Roberts , Dev Jain , Barry Song , Lance Yang , Muchun Song , Oscar Salvador , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Matthew Brost , Joshua Hahn , Rakie Kim , Byungchul Park , Gregory Price , Ying Huang , Alistair Popple , Axel Rasmussen , Yuanchu Xie , Wei Xu , Kemeng Shi , Kairui Song , Nhat Pham , Baoquan He , Chris Li , SeongJae Park , Matthew Wilcox , Leon Romanovsky , Xu Xin , Chengming Zhou , Jann Horn , Miaohe Lin , Naoya Horiguchi , Pedro Falcato , Pasha Tatashin , Rik van Riel , Harry Yoo , Hugh Dickins , linux-kernel@vger.kernel.org, kvm@vger.kernel.org, linux-s390@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, damon@lists.linux.dev Subject: Re: [PATCH v2 00/16] mm: remove is_swap_[pte, pmd]() + non-swap entries, introduce leaf entries Message-ID: <20251121234456.GA383361@ziepe.ca> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 7472A1C0005 X-Stat-Signature: 9kutqbozkf71bssxnj7rammbof7ckbbb X-HE-Tag: 1763768698-898307 X-HE-Meta: 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 3lACDmDi sTgdc1/8AOsPUzMR5AkmMsgYGL99BRU93XVFS9Ww0dsaF2iV2hSSOkKN2J4PuRoLj9eiVlpQBd18vuyfVRGGcH2Mj7OMD7Hwu/O/PuNc0EUSsy+w= 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 Mon, Nov 10, 2025 at 10:21:18PM +0000, Lorenzo Stoakes wrote: > There's an established convention in the kernel that we treat leaf page > tables (so far at the PTE, PMD level) as containing 'swap entries' should > they be neither empty (i.e. p**_none() evaluating true) nor present > (i.e. p**_present() evaluating true). I browsed through this series and want to give some encourgement that this looks nice and is a big step forward! Lots of details to check the conversions so I wouldn't give any tags due to lack of time.. Jason