From patchwork Mon Aug 7 19:38:41 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeffrey Layton X-Patchwork-Id: 1818163 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lists.infradead.org (client-ip=2607:7c80:54:3::133; helo=bombadil.infradead.org; envelope-from=linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; secure) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=Mx4tkLbA; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=cvOqFZBt; dkim-atps=neutral Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384) server-digest SHA384) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4RKRVw5J0sz1yYl for ; Tue, 8 Aug 2023 05:40:24 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References:Message-Id :MIME-Version:Subject:Date:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=CCTkJCEH/OQObeQq1HMtQi2XOG6IVXzIjedGdqvX2kQ=; b=Mx4tkLbAUIUxdp To6BSzAnUpH9LiFHphtO3OcJIydoUbyev3SbJE4dWE5bsD5/HUQk6j49VRISk1vVSagdF5eQNV5F+ TS57EL1lK68c/wJaln4NCs368UgfEdEcwUmCCktruJB/TdVdZzvC+tv/KZWVC6FGlHCLiHnmDTR0h fY3NJfKDdC8FaPS3XoCVJQMLCvOOBFzfgOQ6mmjATC2kpNgJiSq6OSD7MkhQU/eCi2E5QLnRXlWOC /FPRF/W0B0XtM1eymISio5un3ZUboMBWQzXr1Xcuny1NEq5E70+KR4pT5Ukd32PTjWWxc2j/TB2Bq VMP9O6Ax06M1y6iEN94Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qT658-000XOT-16; Mon, 07 Aug 2023 19:39:58 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qT653-000XK2-2H; Mon, 07 Aug 2023 19:39:56 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 33863621D3; Mon, 7 Aug 2023 19:39:53 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1ED32C433CC; Mon, 7 Aug 2023 19:39:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1691437192; bh=OzDnAOkFvdqmLBbFuJs/CLbN23QVgBEedYg5nk4xP+Y=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=cvOqFZBtdtaUZUpcYT8YaLre5p00FbNuCj4U3qnBqbXM0xIZiA7wntOQvtwkVyYsY KzGPHHfNfeSagX//jmohNvYFm+rBns57CsQSi8EBkJHPSRhrZFT/BjhJZaM5mUMarX bymb2xPd0mApBaQcG7sD1IUhckW6N/LCVX49ha2NO5jL3KT5jPvgzVeVTUtPAxnWiK dM7ooX8FgUdfO8Pq4IPDz02iL29DbkONAJVmc5YAAa/XW37auYiCa14sJSBbDU2ME8 1Yyd+iGC1KcpMynDMsQYI8CRvGycMoa1dPssmnhNbpjlfyCvisRz0YkztzSP0nrAdx wLRgkNq83WixQ== From: Jeff Layton Date: Mon, 07 Aug 2023 15:38:41 -0400 Subject: [PATCH v7 10/13] tmpfs: add support for multigrain timestamps MIME-Version: 1.0 Message-Id: <20230807-mgctime-v7-10-d1dec143a704@kernel.org> References: <20230807-mgctime-v7-0-d1dec143a704@kernel.org> In-Reply-To: <20230807-mgctime-v7-0-d1dec143a704@kernel.org> To: Alexander Viro , Christian Brauner , Eric Van Hensbergen , Latchesar Ionkov , Dominique Martinet , Christian Schoenebeck , David Howells , Marc Dionne , Chris Mason , Josef Bacik , David Sterba , Xiubo Li , Ilya Dryomov , Jan Harkes , coda@cs.cmu.edu, Tyler Hicks , Gao Xiang , Chao Yu , Yue Hu , Jeffle Xu , Namjae Jeon , Sungjong Seo , Jan Kara , Theodore Ts'o , Andreas Dilger , Jaegeuk Kim , OGAWA Hirofumi , Miklos Szeredi , Bob Peterson , Andreas Gruenbacher , Greg Kroah-Hartman , Tejun Heo , Trond Myklebust , Anna Schumaker , Konstantin Komarov , Mark Fasheh , Joel Becker , Joseph Qi , Mike Marshall , Martin Brandenburg , Luis Chamberlain , Kees Cook , Iurii Zaikin , Steve French , Paulo Alcantara , Ronnie Sahlberg , Shyam Prasad N , Tom Talpey , Sergey Senozhatsky , Richard Weinberger , Hans de Goede , Hugh Dickins , Andrew Morton , Amir Goldstein , "Darrick J. Wong" , Benjamin Coddington Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, v9fs@lists.linux.dev, linux-afs@lists.infradead.org, linux-btrfs@vger.kernel.org, ceph-devel@vger.kernel.org, codalist@coda.cs.cmu.edu, ecryptfs@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, linux-nfs@vger.kernel.org, ntfs3@lists.linux.dev, ocfs2-devel@lists.linux.dev, devel@lists.orangefs.org, linux-cifs@vger.kernel.org, samba-technical@lists.samba.org, linux-mtd@lists.infradead.org, linux-mm@kvack.org, linux-unionfs@vger.kernel.org, linux-xfs@vger.kernel.org, Jeff Layton , Jan Kara X-Mailer: b4 0.12.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=807; i=jlayton@kernel.org; h=from:subject:message-id; bh=OzDnAOkFvdqmLBbFuJs/CLbN23QVgBEedYg5nk4xP+Y=; b=owEBbQKS/ZANAwAIAQAOaEEZVoIVAcsmYgBk0Ug+f9kdguq5TMBwkHk+cBAUTkwGtaz5BtdXB OuPQyDsL9iJAjMEAAEIAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCZNFIPgAKCRAADmhBGVaC FVU+EACRHWq/ok8Ci5soDBQDERlUIptXu4lEgbxup7TkwLUNnWrAdD6epDKSNEsW7DCyiz2IdS1 pGFVdR0NuWmsNAsV4apdFq8utofCuuQXFkShF4CGpObdFNxDJjMvsoXKFeW/E7fgIlv1w8tvl+M TZtcYLa5VLnkhenORjC9b3TlE8YCfiuxsrGTC8mYBJrtx5d9p30op1+bDdzyytFLNJLQlLWj14x j1oAiR8gG08J92of6XhtGMD0DtCossd3jSeVrC8OYlXA4vCmfZq6JtZhAw+CoNRKb+cOARV+9B+ SJr5nKCvKTzIuqmy7l7OMNEkKl8S2V9AJAwTild9ZW1Z2NAyOuSAeKhrWBFQMIPlWrhkCWsPn6K JuesJK2mMm/FyjTbn/I6u5siqSU+d61eK1yIU1rMkdJoxmydONqyifHcvL1HSrQrWIl2MdAApFE sPG4vDGwzddPezBep3zrdQxC6ZJab7utCrvAwfewI5O/GjTDxkX7FpjNTk1I212uzshngLd6djC Jrse0kdmFbO8tdzk0ywQY79OHNNTMRCNavw0Op2MIxwOIQ4yfXuQcnlaEFLrYX3pIwPe744NWnr cqzI6yqNIe8Y5zTQLAa6eRvH5OhjhgpJax5SPfaimHbaGB73Wa4hwyRmG2bufpcQYrEKNjYr5s0 glVbeH5wiH7pM1w== X-Developer-Key: i=jlayton@kernel.org; a=openpgp; fpr=4BC0D7B24471B2A184EAF5D3000E684119568215 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230807_123953_854939_A488806F X-CRM114-Status: GOOD ( 14.10 ) X-Spam-Score: -5.4 (-----) X-Spam-Report: Spam detection software, running on the system "bombadil.infradead.org", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Enable multigrain timestamps, which should ensure that there is an apparent change to the timestamp whenever it has been written after being actively observed via getattr. tmpfs only requires the FS_MGTIME flag. Content analysis details: (-5.4 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at https://www.dnswl.org/, high trust [139.178.84.217 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.2 DKIMWL_WL_HIGH DKIMwl.org - High trust sender X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org Enable multigrain timestamps, which should ensure that there is an apparent change to the timestamp whenever it has been written after being actively observed via getattr. tmpfs only requires the FS_MGTIME flag. Reviewed-by: Jan Kara Signed-off-by: Jeff Layton --- mm/shmem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/shmem.c b/mm/shmem.c index 142ead70e8c1..98cc4be7a8a8 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -4220,7 +4220,7 @@ static struct file_system_type shmem_fs_type = { #endif .kill_sb = kill_litter_super, #ifdef CONFIG_SHMEM - .fs_flags = FS_USERNS_MOUNT | FS_ALLOW_IDMAP, + .fs_flags = FS_USERNS_MOUNT | FS_ALLOW_IDMAP | FS_MGTIME, #else .fs_flags = FS_USERNS_MOUNT, #endif