From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8C3B2188CC9; Tue, 11 Nov 2025 00:23:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762820596; cv=none; b=U8kZUaY+H/tnkWfukAy9g1blNupE1FQu8Il2q/pl7VVPlYZgIEPNvxR9IzERrE4yP0AJ5TJPx/gnjaCZiWykVZ1Gb5D6H5QPldaxGywf0QcthhTGRs20XSyy1Ore2vmbwCqyX56x/dk59a4dmyU0P90HalDF5TEMNcADO09zHJE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762820596; c=relaxed/simple; bh=gHyaL6pqvKbF/42T+jG0a6a0x8S6QYiyQ3WK/gyAZKs=; h=Date:From:To:Cc:Subject:Message-Id:In-Reply-To:References: Mime-Version:Content-Type; b=Sm/o2JNgzFDYvJ2xTQn6h702uXE691TWQaz9QeeBifwUtFFISQitehhwX7w4ZNmMTkoqNcCKFDzXUVSINzJNyV8Qc80nb6bGYcA7mc2XtaHhatss3DHZ9BzrKP3RBgV/0Txb0VC+vu0dzDHkP7/OyOG7C72OD1F8RHJHBqLAezs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=pBK+uz/9; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="pBK+uz/9" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3D8D1C19425; Tue, 11 Nov 2025 00:23:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1762820596; bh=gHyaL6pqvKbF/42T+jG0a6a0x8S6QYiyQ3WK/gyAZKs=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=pBK+uz/9B/7dT4Dfr1fmhdpoHhdxbIQqjTbyre/CkikfJY2PM+IIamTL2ZV0BAKI6 KK/J5MjNOlWuttzCb4ScA2sCUxaN79WlqRq+Yt72sQj5jhbtkPdo/BxnO6J7GWbfms VP61krwUmcnmNbdLHyOdfy1bZLglbb1ntnV/rcd8= Date: Mon, 10 Nov 2025 16:23:13 -0800 From: Andrew Morton To: Hugh Dickins Cc: Lorenzo Stoakes , Chris Li , 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 , 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: <20251110162313.baee36f4815b3aeb3f12921e@linux-foundation.org> In-Reply-To: References: <5b60f6e8-7eab-4518-808a-b34331662da5@lucifer.local> <3c0e9dd0-70ac-4588-813b-ffb24d40f067@lucifer.local> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: linux-s390@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Mon, 10 Nov 2025 15:38:55 -0800 (PST) Hugh Dickins wrote: > > 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. Oh. Thanks. I'll move the v3 series into mm-new for now.