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 87549C5DF67 for ; Fri, 14 Aug 2026 09:24:09 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 7CB6C6B0668; Fri, 14 Aug 2026 05:24:08 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 76ABA6B0669; Fri, 14 Aug 2026 05:24:08 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 67E2B6B066A; Fri, 14 Aug 2026 05:24:08 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0015.hostedemail.com [216.40.44.15]) by kanga.kvack.org (Postfix) with ESMTP id 385366B0668 for ; Fri, 14 Aug 2026 05:24:08 -0400 (EDT) Received: from smtpin08.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay02.hostedemail.com (Postfix) with ESMTP id A31B112019C for ; Fri, 14 Aug 2026 09:24:07 +0000 (UTC) X-FDA: 85099338534.08.4BF3D5F Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf18.hostedemail.com (Postfix) with ESMTP id E16511C0005 for ; Fri, 14 Aug 2026 09:24:05 +0000 (UTC) Authentication-Results: imf18.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=d2N409Mu; spf=pass (imf18.hostedemail.com: domain of ljs@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=ljs@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1786699446; b=aAmzvFW4qOfxBvY1s+3VmNyhsBdPVQkQt75iBT3CGKZYJA3lquvcoP+lDXPtPA++hXCgNw p7jfN91WsS3mSyBrn6FlnIvUwUVjUGWaH2+ip/EKmWCfrtfNuNsWkd+4yO0dIayZFBg8qb dp1enFJ4u/JSPJjKj/q7PWjqF4TYklw= ARC-Authentication-Results: i=1; imf18.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=d2N409Mu; spf=pass (imf18.hostedemail.com: domain of ljs@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=ljs@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1786699446; 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: in-reply-to:in-reply-to:references:references:dkim-signature; bh=7BDNiSD/TGPAFah4GBukgWpyeTa1R6d2YpvQnMgrjbU=; b=55nnPLEL8OSbhDwZRE42JAXxJM+tKc5x0e8pp4lMEY34pqJIJgh1Ht5U8DTZ6c1qCyivhz 4xjqQiFgeYAqVqnyAwbXc/mxuHKMBB9gRcrus/k4TLElhXdhd9tyAvxpY6nNmMb/O+p3Ze j37UYkEKOGnFUnHX+SfehNyrZS1gLu4= Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id C71D4411D7; Fri, 14 Aug 2026 09:24:04 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 04A751F000E9; Fri, 14 Aug 2026 09:23:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1786699444; bh=7BDNiSD/TGPAFah4GBukgWpyeTa1R6d2YpvQnMgrjbU=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=d2N409MuBnGGenXQIVTUhLYQy/xgOMSTJOVXxi9ZVjJ93EqI18/99Ynmo8/ZKzoUK hsU2f7sHDzJDqz23pQND4q5eUFP4xOc5wHLR4JtOjEMIjt7yU+L42ln5V22elUkK5h NhMaVB0Q+VtlV/t0hp3aZDk/OVtUcaooh9kDUP6wNcplIzQggyjJNuJDOsp2wKG1Wg q9CPiXCGqhAcX4caBqin5H8rmwYz1HQuJPTsdlnI0pt/t1BVNT6fQjv1VjY3LpdHe/ n3V7nv21MsfuDy6elMFCQ1ja2ia9nGW0FWUNrdyZt6Ru6BTTlWvi6H5bCfl/HKDmU9 cnWkXsSOPyDpA== Date: Fri, 14 Aug 2026 10:23:33 +0100 From: "Lorenzo Stoakes (ARM)" To: Mike Rapoport Cc: Andrew Morton , David Hildenbrand , "Liam R. Howlett" , Vlastimil Babka , Suren Baghdasaryan , Michal Hocko , Jann Horn , Pedro Falcato , "Matthew Wilcox (Oracle)" , Jan Kara , Miaohe Lin , Naoya Horiguchi , Rik van Riel , Harry Yoo , Lance Yang , Kees Cook , Zi Yan , Baolin Wang , Nico Pache , Ryan Roberts , Dev Jain , Barry Song , Usama Arif , Matthew Brost , Joshua Hahn , Rakie Kim , Byungchul Park , Gregory Price , Ying Huang , Alistair Popple , Peter Xu , Xu Xin , Chengming Zhou , Arnd Bergmann , Greg Kroah-Hartman , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Alexander Gordeev , Gerald Schaefer , Heiko Carstens , Vasily Gorbik , Sven Schnelle , Alex Deucher , Christian =?utf-8?B?S8O2bmln?= , David Airlie , Simona Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Boris Brezillon , Steven Price , Liviu Dudau , Huang Rui , Matthew Auld , Thomas =?utf-8?Q?Hellstr=C3=B6m?= , Rodrigo Vivi , Masami Hiramatsu , Oleg Nesterov , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , James Clark , Jason Gunthorpe , John Hubbard , Muchun Song , Oscar Salvador , Chris Li , Kairui Song , Kemeng Shi , Nhat Pham , Baoquan He , Youngjun Park , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kselftest@vger.kernel.org, kvm@vger.kernel.org, linux-s390@vger.kernel.org, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, intel-xe@lists.freedesktop.org, linux-perf-users@vger.kernel.org, linux-trace-kernel@vger.kernel.org, syzbot@syzkaller.appspotmail.com Subject: Re: [PATCH v5 00/16] mm/rmap: index MAP_PRIVATE file-backed folios by anonymous pgoff Message-ID: References: <20260813-b4-scalable-cow-virt-pgoff-v5-0-c21581c0c3c8@kernel.org> <20260813115346.2aaad419a351341a4f5f3ae0@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: E16511C0005 X-Stat-Signature: assjr4k6bnouis1c1jdun4zy3kron9xz X-HE-Tag: 1786699445-280984 X-HE-Meta: U2FsdGVkX193tEUQOhbs6VlTwaZ3PeYI3ZmRbPwg0FouQRWAFiM8Z73vleanGtb9a0O0NTwLfXBWQgsjzb85S4sNOrZU/rvY6fBuVplmWhNs6/5NDt+f5s5vm1T0DucwXPHbt7psnKJsHwrL/UyZ86352EYCgOlewHzktQbTkCv04zWDrRuYCCvAMOFgKUm/VJ8QkDTIKRT2Avyuhke6/4cQdGKkfWf4fzeob8YDkw+VM9RScNZkB98ZmRdGL+frn1uxmkV625rKnAKh1RdprlmjQ4o5vev1TvzRIv7ucMYADtxOR536lS+zM+8N1y2MySHCoW/ExzDo42/3gx7WUdgIJPD5fSsCEYW2iZ4C/ImjP+KFxwWC6FyGOefMyYeX9uokC0X9nQaJSLDbAt0MBpuiAVsZU6dmTlm4f4lJRMjUf0h6sswh1Bz2+xaYBZ1tQyK9pCdz4k68+c7vmyn1oIDb6ZWr9GYw13XiWN9w3UhtHfeuRiPrRdiuDDSVtz27jKsQY2kOLvz5G6qthbbGF1cZT/6krIRwSMRAxg5lDEPxRSVrvqpQLQqiOdHE44xeYKwHHUjfTue7L4QZz/OrzOtT1bZ2Fuzpe9Jf/H3TwhF15p5ySdZc2OFatkaSM9zNhDWy2EDjD3OxCN50EZuuzXNts4zXZL7z3CKEBdpNAUu1pR4JHbuT6C8kVsTOVhlR+cx9AEIsxJOySpaDntj6IwZWWTgOFQVGUFET5uWvc2mmQrwmSfkkZykm4we8NpepaIbUptag0vvmASzzqGIHgEgWXwTqHb9tQcMgBddBCdE/HMJgA6O/hns1jHRwIoLnc3p/IkpwYuBkmlScl7YFAzYqnelMYgn1PJWpMGNkXugXaqD2vr9mzUbWfhxcDFFf9X3Th37i91mTsWhE0uRJeLwxIq+sfn1dg75n0tM1cKkvhSmhN6VYIgm0fTLB/7eoLOKe0Rw+fMMG22pKvpc BB5H6f2D k+lLOnwCttpRQKR1Itn20AloLZHUTqzHNtyIyovAMX5HtM8wVryyEI9AgXNkfQbFPMoDx1QRzwO6iIgFr8+ltLbquueJExahleujoNT999bC4pBqV4kj+yiY7DVh47dbFoo9UNBtV+LJJ7KagkXXcIdFFi7u8kz+BK5eb1fkz9cVhaqk/kuW0wFuD0DP/DiqLFCSb77QvwdP9OIMJ5yZbpA/AmfaSPQ9P4kGh4Nkn0DYH6bpVOswWgin10RnqQ76XTxz8z21t1/i/L3BcuBmJ/b7Va5aMJHxkNmveLsbul96EyNE3F40eTzz8fbmQr9NfJb8lHAq5DVt6hfAEVV2MdAtZ4osgp43z0gsSOmgdaKkNpYVSBBueSyGCOQ== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Fri, Aug 14, 2026 at 12:18:50PM +0300, Mike Rapoport wrote: > On Fri, Aug 14, 2026 at 10:01:19AM +0100, Lorenzo Stoakes (ARM) wrote: > > On Thu, Aug 13, 2026 at 11:53:46AM -0700, Andrew Morton wrote: > > > You'll be mortified to hear that Sashiko wasn't able to find anything > > > to which to apply this. > > > > :)) > > > > Well, when it's right it's useful, when it's wrong or suggesting unrelated > > what-nots it's less useful :>) > > > > I do locally put things through claude + Chris Mason's prompts a lot, I > > don't always invoke local sashiko as it's very slow and token-heavy or has > > been so far, but am planning to do that more also in future. > > > > > > > > Sashiko can be guided with a base-commit: tag but I'm not sure how to > > > tell it what tree/branch to try, or even if that's necessary. Perhaps > > > someone can figure this out sometime. > > > > b4 gives a base commit, but I think because the trees are rebased it ends > > up being the incorrect one. > > It's not only that the tree is rebased, but also that mm-unstable carries > the previous version of the patches. Yeah that's part of the issue, I can't rebase on mm-unstable as a result obviously. Is hard to know what is sensible to rebase on - if I rebase on base of my old version of the series in mm-unstable that'll probably be a bogus commit at some point due to other rebasing. > > > Not sure what the solution is! > > > > -- > > Cheers, Lorenzo > > -- > Sincerely yours, > Mike. -- Cheers, Lorenzo