From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 526B9606A324 for ; Tue, 27 Oct 2026 08:44:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=ICCbTdoW Received: by kanga.kvack.org (Postfix) id 4F4576B05C1; Tue, 27 Oct 2026 04:44:43 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 4A5636B05C2; Tue, 27 Oct 2026 04:44:43 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 36D3B6B05C5; Tue, 27 Oct 2026 04:44:43 -0400 (EDT) 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 0DE3B6B05C1 for ; Tue, 27 Oct 2026 04:44:43 -0400 (EDT) Received: from smtpin22.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay04.hostedemail.com (Postfix) with ESMTP id 8C0B01A0908 for ; Tue, 27 Oct 2026 08:44:42 +0000 (UTC) X-FDA: 85367770404.22.634BD16 Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf24.hostedemail.com (Postfix) with ESMTP id 060DD180008 for ; Tue, 27 Oct 2026 08:44:40 +0000 (UTC) Authentication-Results: imf24.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=ICCbTdoW; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf24.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=1793090681; 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=W+LEOaUQbUL+JHSbe+QhToSeMirP6JQp6AWWXj4VvXk=; b=1uvZIYFwg1et8UP0aF/Xva79Pyb9HdNpZNLjvAKA1iXCWZkWSFRVK+jqs5HoYxUSXNa/RW US5DsouirsF5Gyy7y2i8UkySwrHpEgO+tdF2HU78d7xomQ+B7p5Q40dYeVyGjmeQmFX45T V2JEKGH7ceUK8DdNbcaypZ/yeh2N8kM= ARC-Authentication-Results: i=1; imf24.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=ICCbTdoW; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf24.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=1793090681; b=t7dFyTb9k9Ze7qX5hg40hXwbjJoPV7EmKtbKOzHchcC33cenitSvP5ZYNXOLnoTqtkXqj+ gRJcPm5hIOHEQQ2ZEkHyneI0GXgyW3bC0zef6v601dJEK9EDJj3JtMGOxXfpX8ej/IZ3Wi 2kP6Tb/58oDnJa/TWvuu+JdBRAe/haU= Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 31835437B9; Tue, 27 Oct 2026 08:44:40 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 30DD61F01825; Tue, 27 Oct 2026 08:44:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793090680; bh=W+LEOaUQbUL+JHSbe+QhToSeMirP6JQp6AWWXj4VvXk=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=ICCbTdoW/j7vqJ21aKNf/Ed7op7mGrUCMSzQUb8CI9Wrhehz+xNzXORgvl1APqyYy 36Djhv9uRr8ibA5ZP/MXz9DGGy2YmD7yoOnrHShKNQ+NeGuxGeCDo7rr3bLeaLmD8S Y6vaYvwfMvcfFhI6X25asa1qBukhNTx8j8CEt/wbHFjYyz6jqnGVxAbA5PciqivIvP H1w3YA7zTBJBBFdxW3/ueobcnz6eECayjH8MEn59pysbYWJt7xD6EkLjBPY8Rz0cxN yndkPIyJetYPEWfWxlUsoRHPsSpa3WU2QdMKXi2GMDbSeMhs4bt8OkMWTEjKTRKmBG Cl5DzBeXFeqTA== Date: Tue, 27 Oct 2026 08:44:23 +0000 From: "Lorenzo Stoakes (ARM)" To: Gregory Price Cc: "David Hildenbrand (Arm)" , Andrew Morton , Johannes Weiner , Michal Hocko , Qi Zheng , Shakeel Butt , Kairui Song , Barry Song , Axel Rasmussen , Yuanchu Xie , Wei Xu , Baoquan He , Baolin Wang , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Kees Cook , Peter Zijlstra , Jann Horn , Pedro Falcato , Hugh Dickins , Pasha Tatashin , Pratyush Yadav , "Matthew Wilcox (Oracle)" , Jan Kara , Zi Yan , Lance Yang , Rik van Riel , Harry Yoo , Alistair Popple , Nico Pache , Ryan Roberts , Dev Jain , Usama Arif , Kiryl Shutsemau , Matthew Brost , John Hubbard , Peter Xu , Will Deacon , "Aneesh Kumar K.V" , Nick Piggin , Oscar Salvador , Minchan Kim , Muchun Song , Xu Xin , Chengming Zhou , Chris Li , Kemeng Shi , Nhat Pham , Youngjun Park , Joshua Hahn , Rakie Kim , Ying Huang , Jason Gunthorpe , linux-mm@kvack.org, linux-kernel@vger.kernel.org, kexec@lists.infradead.org, linux-fsdevel@vger.kernel.org, linux-arch@vger.kernel.org, linux-cxl@vger.kernel.org, Josef Bacik , stable@vger.kernel.org Subject: Re: [PATCH 04/46] mm/memfd: make f_pos accesses atomic Message-ID: References: <20261027-fixes_core-v1-0-6f74bec9a5bb@kernel.org> <20261027-fixes_core-v1-4-6f74bec9a5bb@kernel.org> <179307206859.1171062.6841971971647864368.b4-reply@b4> X-Archived-By: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <179307206859.1171062.6841971971647864368.b4-reply@b4> X-Rspamd-Queue-Id: 060DD180008 X-Stat-Signature: k98ttjyapk38uigs6zjzh5yhbyokngzd X-Spam-Status: No, score=-6.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_PASS,SPF_PASS autolearn=no autolearn_force=no version=4.0.1 X-Rspam-User: X-Rspamd-Server: rspam09 X-HE-Tag: 1793090680-135273 X-HE-Meta: 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 kTK0h5Ns FuG1N9eIZ5Fh0HiUsj5OiM12s4LA9rUAxJi2MJkw7TX6uBTUggkUBOYE5LmrjS8AUOlw6SIBoYJulwauCSKxaEeVdWG8JlOMOUydmKtTZ+iTSgzI6KinWGqPr/KIxc3CtqHRVNLmZ4UZNa5bodW1eYnCMwNTiuThoUnJ0U8rpEU/c5uAfPDM2wCAoGudGp4YwoTg8dUWndo8hyDCB/Mw+GQ8u62/4sDQ9akr/t8strzBpMXRvSXWP0gLovwrbCZGaSmDAfD6Wpwlnd2euw/83O/tYYg1WZwtEhlWzIqPTcjVYgPIaQDGh6jybgkA3hqy8+IW8B2xQFUXBXDA4X2ve+bHwi+/ZYFdoY3obOIRYGQhohjSZDKHi6vrSxQ== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 On Mon, Oct 26, 2026 at 08:34:28PM -0700, Gregory Price wrote: > This one arguably should have at least a trivial selftest. Generally, we don't include tests with fixes. So these things have to be a follow up. -- Cheers, Lorenzo