From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8B647CCFA13 for ; Tue, 11 Nov 2025 00:23:20 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id C22878E000B; Mon, 10 Nov 2025 19:23:19 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id BACD48E0003; Mon, 10 Nov 2025 19:23:19 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id A74618E000B; Mon, 10 Nov 2025 19:23:19 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id 8F0FE8E0003 for ; Mon, 10 Nov 2025 19:23:19 -0500 (EST) Received: from smtpin15.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay06.hostedemail.com (Postfix) with ESMTP id 0C6B712CC96 for ; Tue, 11 Nov 2025 00:23:19 +0000 (UTC) X-FDA: 84096426918.15.A8C3D60 Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf28.hostedemail.com (Postfix) with ESMTP id 690BCC000B for ; Tue, 11 Nov 2025 00:23:17 +0000 (UTC) Authentication-Results: imf28.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b="pBK+uz/9"; spf=pass (imf28.hostedemail.com: domain of akpm@linux-foundation.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org; dmarc=none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1762820597; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=bhCU1wl+0WRiNZkcInDb6pihu5NuBMB+5m3WCnvHHos=; b=JQhUhy84av5k03y8o4illMYD6l4uNFV7nsOI1DeUlzcnPk/TlIl0dvkPitTbL4UUYDvgzY A1lI2IfH10ET9sCdqjXlSpKDT4ClEPX4UsL4MWzZocygAIXlMUFct0HNZNdmH4ItAwH1mp x1TulolAuoIyj3VAUdn7HJN9slJNLnc= ARC-Authentication-Results: i=1; imf28.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b="pBK+uz/9"; spf=pass (imf28.hostedemail.com: domain of akpm@linux-foundation.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org; dmarc=none ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1762820597; a=rsa-sha256; cv=none; b=ddxM3X+ywMaV43lKcAGYac1DQCYjlporfV22bEgBQavNlp5NckrKlRMvMhIAeti6LXtw4g EexAz+yyBPP4OLg23JppA9OOq6pJZYNK9u/JiHHKe8D0R7ZIUU1kRJjo5RvU1ZbaAuI4se t9gTB7N9VA59pbj+BXr7S8OFXViqujA= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 2C8D44428B; Tue, 11 Nov 2025 00:23:16 +0000 (UTC) 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) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 690BCC000B X-Stat-Signature: kkbe8ahnb76fnpq9ash4p3pfprayzeta X-Rspamd-Server: rspam02 X-Rspam-User: X-HE-Tag: 1762820597-813484 X-HE-Meta: U2FsdGVkX1/G0h18wv//Q9wXQx+GEXnO3RIU8gcJ+v/MYxFNQYHBdyarFiqIGp0gRWPB/3vEOWCzVzZk4GCxg9loYttLUsQIizRcF3AhdK3ZXbokmHo9gYp1g5bdOw4n7kLiZaLLtVsbAOd0fOI1flV+eXvBsZuc62EAaCS7Uv6Lzxi59Tpw5ePoKdXLuhKSAZfHbIfirLIRBNNAJ3HLEO12D0YMHBkYcfqJgCAs8/jKheicywU64B6LAtLtNc/hyc3Kne7AcWhGYeua3DqIyyC54dVmLLR+CwaHTKRmoyw9whzn2oy+0YtYCY9Uwl+Q2D5XADyI5n8SuJQQbgPWYzjDnAjYwmp4KqW8lmzKKtlutaIxQbJgDcnRclHsJvOHfyShxL1aDGgnpfSccPrw/YADu0Xw5JIEkSWzhxKfURDhBENy6pTL4DvxSXkMGyEM7kE9fBnRjxmWDYbb1j0lc/V78PrPVBDmneUer3XHq/FFA4so2SFzKiWUh3aLBmJ9a0+cnh84r4wsFh5Wf8yxnoFbaRJhyTcrGs4VVpTL+vUw2sbZFqfGLUjU+YycB1tDdxPq3pfKwANZQyt6JQCdtFFks8WzNzrbGtF0/10Ve5BqHdSPPgd3JKignEyWaZ6XfNdSaCrP/rlLIgPfN+QOtplBMHrOdh+w9TaJ1KyezRzAmYULGEa4akF9KBOwg4j3mDzVsNfhlAcXj6Yl3ggRVqaFYd74Pb4sYbzh4ZUphOm5UDIBFcXZXTwqsHJtSyWcJDYQtHrFUXPw4ptq/Vbqvoo7fIXPteDO4yrVRAKw4TOh/ITj+FIzhHXG+2E++v2pqA0EVoHocPHNzT491UUuivjxV+IkCPOooL4FGFCvmy6s1EDY2Z9hX0JW3SpZSmfVYW8fIzKXuXiw7REjHFA11QudB6//YsTdc5bDsfywkrbTSw9NbVZZpLCJ5BletsbAceDOeGwmUElaTmaWGQl abjVVxIS lshfRO2YEwQH0ODo4HX92mn2rKywyWu0k1Fiao7SA56WBBOzTwn55hMrilaWshe2LP8fA 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, 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.