From patchwork Thu Jul 13 23:00:56 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 13312785 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1FC49611E; Thu, 13 Jul 2023 23:01:53 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id EC563C433AB; Thu, 13 Jul 2023 23:01:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1689289312; bh=kIvw1OVi/OYz+atwIBCynX0q88XJ1zU1WapHn2pYQP4=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=ji6lTm8ixvNtDVVdWA3hLyHSMWJKcMADi3bT5BtloRaThTlgVtrnfDXRVZYz43eRu e46QVkCnWld61ntI9tgz1GRsuSCFqBU2ObStlUNmu2ITfHTBwbv7vJEVbd4VhZV50Z dT95XgUQ0gE/E1uvcZKi9FQTchZ0DfPl+ZI9RB22N2f/MLfNFP/JZ9fevITXI82Nnn gxkb+MeSgX88JSRcRtINCznpW+x3Bw6LJRgU7m1nPn5OW1YU0SQ5fO7Mc35+2Am2DI 3RZxGv1qzyqNs6VT+JidZtfoYQynlt0REEMl5HH24pEX9jmVLyVDYYNkSzsIu+nPLz p0XGmDep4V68Q== From: Jeff Layton Date: Thu, 13 Jul 2023 19:00:56 -0400 Subject: [PATCH v5 7/8] ext4: switch to multigrain timestamps Precedence: bulk X-Mailing-List: ocfs2-devel@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20230713-mgctime-v5-7-9eb795d2ae37@kernel.org> References: <20230713-mgctime-v5-0-9eb795d2ae37@kernel.org> In-Reply-To: <20230713-mgctime-v5-0-9eb795d2ae37@kernel.org> To: 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 , Alexander Viro , Christian Brauner , 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 , "Darrick J. Wong" Cc: Dave Chinner , v9fs@lists.linux.dev, linux-kernel@vger.kernel.org, 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-fsdevel@vger.kernel.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-xfs@vger.kernel.org, Jeff Layton X-Mailer: b4 0.12.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=843; i=jlayton@kernel.org; h=from:subject:message-id; bh=kIvw1OVi/OYz+atwIBCynX0q88XJ1zU1WapHn2pYQP4=; b=owEBbQKS/ZANAwAIAQAOaEEZVoIVAcsmYgBksIIvy36LZaWXx77QDXekEjnV6herdriJfAZSF KRvi1GJeviJAjMEAAEIAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCZLCCLwAKCRAADmhBGVaC FdpuD/4olF8PfkzpOMhKo0pYakgpPOkYsvbjRlnWul1JeLAyEulDwt7cUm7WvWS7sMfn1nmbiyP ZHDXA8DklrSv30kAkd/SL9dBOk9CqQRpnh3gYQN8VNdWNLw39gnLGtNuYCpAfLNo6atBt+fNyyC 9JTlkqthcsWlIIJg04NUID5P3Jx07BORb0Uye5L4hJyaE1uS3bR9dMrxhAWH4RhuGTPnQOnDXy0 8jUhXWSuWv5boD0GGnQiwKp0sMI/s08qlD+VHcAKA3ng2vs9Kgpqr37JvvET803NiGk8yj9pL03 zs0M+o+33FLV8FRVqOh+U+Jx4gU5h0mFwEp9K+Thq8cujHzoq47kEHiEUovgVSQuqftTIVBazJG hs4VXOKAnNx4QoIzUmqCsLgvvJMSxUqe1h6CftfWNBb74Gl7VROa7K/9RRLjvfgLUknDQaYmnWs uRwFrVVPpco6YGgC+fPrV0+xTVyKEA/2zTAlQWrS7tRu0NtjQWSaQcYgz1Gpc6JaotWcgbi9HFc DovY/3/xXCkw7YtqNGLZBg8SMoSWMoDxy7Uwz5OXs5uUpmFp0p1YgTS1GFz/wgOrNTbFHTHc3QX hRQiNndjZv+/zFzfH7J5roV04qDMIMAABTOlktx3N/eKz8JCFhz6AePPqjavoMl+dS8drsBe4xd SUt6/wNve4Dcx+w== X-Developer-Key: i=jlayton@kernel.org; a=openpgp; fpr=4BC0D7B24471B2A184EAF5D3000E684119568215 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. For ext4, we only need to enable the FS_MGTIME flag. Signed-off-by: Jeff Layton --- fs/ext4/super.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ext4/super.c b/fs/ext4/super.c index b54c70e1a74e..cb1ff47af156 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -7279,7 +7279,7 @@ static struct file_system_type ext4_fs_type = { .init_fs_context = ext4_init_fs_context, .parameters = ext4_param_specs, .kill_sb = kill_block_super, - .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP, + .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP | FS_MGTIME, }; MODULE_ALIAS_FS("ext4");