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[172.10.233.147]) by smtp.gmail.com with ESMTPSA id 00721157ae682-787d6a2947asm27792067b3.55.2025.11.10.15.39.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 10 Nov 2025 15:39:09 -0800 (PST) Date: Mon, 10 Nov 2025 15:38:55 -0800 (PST) From: Hugh Dickins To: Lorenzo Stoakes cc: Chris Li , 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 , SeongJae Park , Matthew Wilcox , Jason Gunthorpe , 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 In-Reply-To: <3c0e9dd0-70ac-4588-813b-ffb24d40f067@lucifer.local> Message-ID: References: <5b60f6e8-7eab-4518-808a-b34331662da5@lucifer.local> <3c0e9dd0-70ac-4588-813b-ffb24d40f067@lucifer.local> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII On Mon, 10 Nov 2025, Lorenzo Stoakes wrote: > On Mon, Nov 10, 2025 at 03:04:48AM -0800, Chris Li wrote: > > > > That is actually the reason to give the swap table change more > > priority. Just saying. > > I'm sorry but this is not a reasonable request. I am being as empathetic and > kind as I can be here, but this series is proceeding without arbitrary delay. > > I will do everything I can to accommodate any concerns or issues you may have > here _within reason_ :) But Lorenzo, have you even tested your series properly yet, with swapping and folio migration and huge pages and tmpfs under load? Please do. I haven't had time to bisect yet, maybe there's nothing more needed than a one-liner fix somewhere; but from my experience it is not yet ready for inclusion in mm and next - it stops testing other folks' work. I haven't tried today's v3, but from the cover letter of differences, it didn't look like much of importance is fixed since v2: which (after a profusion of "Bad swap offet entry 3ffffffffffff" messages, not seen with v1, and probably not really serious) soon hits an Oops or a BUG or something (as v1 did) - I don't have any logs or notes to give yet, just forewarning before pursuing later in the day. If you think v3 has fixed real crashes under load, please say so: otherwise, I doubt it's worth Andrew hurrying to replace v2 by v3. (Or have I got something bad in my build, and will have to apologize? Or am I blaming your series - seems most likely - when it's actually something else which came into mm in the last week?) Hugh