From patchwork Thu Jul 11 11:08:11 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 13730425 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 9296316E869; Thu, 11 Jul 2024 11:08:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720696126; cv=none; b=WCOOoWLkBPgKiRl0LG4ZhB1UNr99fBQu5zMd7FZUVlT1e4413RItn14xMgMyjIDTWwUa5lyLeUy93tT2GsAbQtPDlfRMYVR2uCZWCuz2PxozaMZWFVwgIwh5TB1T/r0fjI2KOW1FxCxF3LArQ2pIqXH7xTr2t5PKRU7lFlVWdTI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720696126; c=relaxed/simple; bh=aIxGR7na/Qdc3ayjXzlWsssXh9j6/eXvzZW4Lz1mI/Q=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=Af2b2teXqvSrDMnWtB/EXDzF553F8ippFSG8YgRBmq2fC7DeHfC2Yp48v5nO6mIBGvoG6I+GmsEgmtARZsEe7DEMft3ScnlXW3KIFee3dXUtNLG66wVz17KwnySOHW+JcHO8jwEi4n7HoiVbONmUw2uPsSZU76PKUGBz/ucnm0I= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=p3RoEDci; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="p3RoEDci" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 61540C4AF19; Thu, 11 Jul 2024 11:08:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1720696126; bh=aIxGR7na/Qdc3ayjXzlWsssXh9j6/eXvzZW4Lz1mI/Q=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=p3RoEDciD+DzxXOQ4bkKEi/2XUp+heLaAS7X8Rk2SnsiE8e8X+bNY6DnQrWWaPCg8 vDT2+s2Xj2d05hRPt9U1h20xOMTqaC4iyDa9XL3ktuDcG4PfpGXLsckn6gM9Pz76vr 7tmNuLiIYwtH2KSw5EBteQInK93cspWsfKPf2CsBJWRSYtQGXc17pRkEFbbJ4XVyEj g0gBE7VDIKgTumvWLyAQHqK21u+zMeksCE0+4ZxsZF/zS0xNny2zd5DELfTBxS0IE0 3qJKTSkKQD3mdSNnbQxQ856Qipa1ntOZjZuwZcThGvzVEeTFW+SsAfTzXBGS0Nhn/R q+UiX+o4cfhtg== From: Jeff Layton Date: Thu, 11 Jul 2024 07:08:11 -0400 Subject: [PATCH v5 7/9] ext4: switch to multigrain timestamps Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240711-mgtime-v5-7-37bb5b465feb@kernel.org> References: <20240711-mgtime-v5-0-37bb5b465feb@kernel.org> In-Reply-To: <20240711-mgtime-v5-0-37bb5b465feb@kernel.org> To: Alexander Viro , Christian Brauner , Jan Kara , Steven Rostedt , Masami Hiramatsu , Mathieu Desnoyers , Chandan Babu R , "Darrick J. Wong" , Theodore Ts'o , Andreas Dilger , Chris Mason , Josef Bacik , David Sterba , Hugh Dickins , Andrew Morton , Jonathan Corbet Cc: Dave Chinner , Andi Kleen , Christoph Hellwig , Uros Bizjak , Kent Overstreet , Arnd Bergmann , Randy Dunlap , kernel-team@fb.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-xfs@vger.kernel.org, linux-ext4@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-mm@kvack.org, linux-nfs@vger.kernel.org, linux-doc@vger.kernel.org, Jeff Layton X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=839; i=jlayton@kernel.org; h=from:subject:message-id; bh=aIxGR7na/Qdc3ayjXzlWsssXh9j6/eXvzZW4Lz1mI/Q=; b=owEBbQKS/ZANAwAIAQAOaEEZVoIVAcsmYgBmj70lLGwtVIH3fc84IqxhCflp0IWdNwkGUMG2A KdkQdY1RniJAjMEAAEIAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCZo+9JQAKCRAADmhBGVaC FS6uD/4iWWotu9rZZKKFv50AvekdwtGDtGPWRiHDnyK+Z4WsUIEm7Je//sOMkTYveYEOhKTwiw2 JKNOdXyMaZppvgpDkeNa4cv9LhdxnQCV1yGdeh/RorjGmeNAekQF6FEuvXnYZDjU/b6P07Jhbsf BD3rSONfp1FDpMNZryrsO40nWnTF3Jk4xpZ23j/5uVlj6otGJOQJTHR233i+gb7LSlKmYffo2kQ ynpKKfUFhGoIIYspBFefTrK3pEVBGuwY+mlpteZbQofFI5+pYXqiLj2PAgZMnRAja5y9Xww1E52 0gx8Cysjr06dcF1/CMrXF3hVDB+/NQzXV4a6EJDcmWL2ap13OLgV5LYfhpiSM0dLZDmSNK6+Vxo I1MJVA9Rnk3W49gq/rZD48IRm2M6ctw+raFZic5nKFC/qKSrNKp6znW9JPsQLbclpwn5s3BS0CU kTBWse7xWx83BQ4pbJl2np9CXPeprNQqup22HN/p5+jTqcaos8t9mN4bXfdA4xhnTMGcOfCY8QZ iGnLSJ7FaKQex+xK/q2E/1K2rvzPtmDJKFiVvSRgIUmpQ3b2/4v23Z671/UGCpCgT1MtYzzCYvU FbsAT67Wp8UNzXVatlzSKXwQvEDyRbXasYy1gEniN6W7uExCqQf/k0sA0ToW/ptxlQfb/z/EFd0 /NYocsP6uJA2FgQ== 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 eb899628e121..95d4d7c0957a 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -7294,7 +7294,7 @@ static struct file_system_type ext4_fs_type = { .init_fs_context = ext4_init_fs_context, .parameters = ext4_param_specs, .kill_sb = ext4_kill_sb, - .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP, + .fs_flags = FS_REQUIRES_DEV | FS_ALLOW_IDMAP | FS_MGTIME, }; MODULE_ALIAS_FS("ext4");