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 BC010C43458 for ; Fri, 10 Jul 2026 15:16:14 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 7459C6B00AD; Fri, 10 Jul 2026 11:16:13 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 6FB7B6B00B1; Fri, 10 Jul 2026 11:16:13 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 5E5FA6B00B2; Fri, 10 Jul 2026 11:16:13 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0016.hostedemail.com [216.40.44.16]) by kanga.kvack.org (Postfix) with ESMTP id 38BF96B00AD for ; Fri, 10 Jul 2026 11:16:13 -0400 (EDT) Received: from smtpin18.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay09.hostedemail.com (Postfix) with ESMTP id BEB928EDAC for ; Fri, 10 Jul 2026 15:16:12 +0000 (UTC) X-FDA: 84973217784.18.D845B9A Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf10.hostedemail.com (Postfix) with ESMTP id 15E9FC000D for ; Fri, 10 Jul 2026 15:16:10 +0000 (UTC) Authentication-Results: imf10.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=DHGTVQQh; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf10.hostedemail.com: domain of ljs@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=ljs@kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1783696571; 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=4r0Cc9l2aAmZyRZIk2/aSrghpeZfvwxavhupSZVEeMs=; b=OMd6GyQFAPza7AckU8xTFuGEAOQ8Q5ECezyu1yHS2OhE3lHjoMRjeGfJzyEpWOoXvLY+Iy RaY1Fukdxpj/EiujLLq8fQJzI52sFr+beHqz/UPwEKS7d+wRZj+LZwA12qD2dEA2ftj8uY 9HSDFFZ1DDDaQSzLMUiHov5LAFsaaF8= ARC-Authentication-Results: i=1; imf10.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=DHGTVQQh; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf10.hostedemail.com: domain of ljs@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=ljs@kernel.org ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1783696571; b=uHFaXxuwVXQlQzt0CknZbJ2HChcToVCIBBapbZ8UJgMh2QFQxkrOa6KLTTlXIcexnXv5lJ s4QbQc5UlLUVzp3c9hmrdqZddB2kxTZRw05ts0HAwkAPU7u8ysPsijiTd9TJv1qYrrk+PC GKzhKU9EbqZuCiPtSuIFLt9Ey3ZJRUI= Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 4CBF340A4C; Fri, 10 Jul 2026 15:16:10 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C39A61F000E9; Fri, 10 Jul 2026 15:15:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1783696570; bh=4r0Cc9l2aAmZyRZIk2/aSrghpeZfvwxavhupSZVEeMs=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=DHGTVQQhWaTrPzJXRhL+eOlPh3mjgM3TYm3BACmuvjIRndZXufi/DOhVvVPUUmShz pMaTajqPd2DgQBSgWuLiUyl1vIFajO3tcup29tN2rA+oZElUGBQ1IGgnnzXislM27I 7CvnkGOpI5896VQOz3W8Gmxeu3uzmNGoxn7r0l7pBdQ0sONYuYGXeAzxoC3tQ9/wUH UEFxz/qEn3hiXt8kPfwHLqlEerVkyRZiznIxE9j6rS+w6Jb2/IyIAdhgUn87BZzWbP pGVPtXCokUhc0BUp8Nl0bg7ctkDVndBAE1whxwQffv6MbiL/O4PIdb6JwCyyrjCy4K eJhH8u+Rek3lQ== Date: Fri, 10 Jul 2026 16:15:46 +0100 From: Lorenzo Stoakes To: Gregory Price Cc: Pedro Falcato , Andrew Morton , Russell King , Dinh Nguyen , Simon Schuster , "James E . J . Bottomley" , Helge Deller , Jarkko Sakkinen , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, Ian Abbott , H Hartley Sweeten , Lucas Stach , David Airlie , Simona Vetter , Patrik Jakobsson , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Rob Clark , Dmitry Baryshkov , Tomi Valkeinen , Thierry Reding , Mikko Perttunen , Jonathan Hunter , Christian Koenig , Huang Rui , Ankit Agrawal , Alex Williamson , Alexander Viro , Christian Brauner , Dan Williams , Muchun Song , Oscar Salvador , David Hildenbrand , Suren Baghdasaryan , "Liam R . Howlett" , Matthew Wilcox , Marek Szyprowski , Peter Zijlstra , Arnaldo Carvalho de Melo , Namhyung Kim , Masami Hiramatsu , Oleg Nesterov , Steven Rostedt , SeongJae Park , Miaohe Lin , Hugh Dickins , Mike Rapoport , Kees Cook , Paolo Bonzini , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-parisc@vger.kernel.org, linux-sgx@vger.kernel.org, etnaviv@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, linux-tegra@vger.kernel.org, kvm@vger.kernel.org, linux-fsdevel@vger.kernel.org, nvdimm@lists.linux.dev, linux-mm@kvack.org, iommu@lists.linux.dev, linux-perf-users@vger.kernel.org, linux-trace-kernel@vger.kernel.org, kasan-dev@googlegroups.com, damon@lists.linux.dev, Rik van Riel , Harry Yoo , Jann Horn Subject: Re: [PATCH 17/30] mm: prefer vma_[start,end]_pgoff() to vma->vm_pgoff in kernel/ Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Stat-Signature: dy6bfafi3hh678s94jarruo35oh1hcrr X-Rspamd-Queue-Id: 15E9FC000D X-Rspamd-Server: rspam01 X-Rspam-User: X-HE-Tag: 1783696570-902663 X-HE-Meta: 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 wVeXYzwx uZxM31Enf0rE1m95RtZL3yAbAwpqigR2+xNxHthMuYeFRFDJldYFT0N5evjubNyeWheQzfvavB88NnsBVA5hiISCu7sVNdBU+Fl8yT/uJhzGQ3PZCDSAzc/mhlrnGfdCjAwp9ztf4dPYn0fEyuyN6SSvG4CBacjnX1bTKFUE787h7YGjRZT1ysAPvSaX1s3IwfYnvhjfldkE+36D4P/RetcBlWOX+5ivawHtyHhKzS7FsiKBeCmkP/5008krAT3OVb3aGPXajN/eWcntyih06qhx0Vxg8SJq0ZTtzcZk67/U/MmidLwe0wTG9dIz8HIUkqmTnJMddHvMu+3wuaYaurK4Qo4fvuOuIoo+sVWhw14kbtF6HoXn2v/6lQg== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Fri, Jul 10, 2026 at 11:09:02AM -0400, Gregory Price wrote: > On Fri, Jul 10, 2026 at 03:56:33PM +0100, Lorenzo Stoakes wrote: > > On Thu, Jul 09, 2026 at 11:49:18AM -0400, Gregory Price wrote: > > > > > > Silly question: > > > > There's no such thing :) > > > > All my questions are silly. That's my secret :] Mine too ;) > > > > > > > What's the purpose of retaining tags in a non-address value? > > > > Well if you want to reconstitute an address from it later then that'd be the > > intent, but I'm being hand wavey here for sure. > > > > Main thing is to retain stuff under the page mask > > > > Right, which ... > > vvvvvv > > > That sounds like there's fragility just waiting to be broken. > > If that's an actual issue, then our relationship with tags is painful :[ Yeah, I'm just not sure tbh. But all that is stuf for future masochism^Wfun anyway ;) focusing on the 'respin the monster series' fun^Wmasochism atm... > > ~Gregory Cheers, Lorenzo