From patchwork Fri Jul 5 17:02:41 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 13725427 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 D7008176ADD; Fri, 5 Jul 2024 17:03:15 +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=1720198996; cv=none; b=uJjFUmTWZEjuDBUOGjOS4vAoUl5jOO0uHHrV5EfghB0iqajrZE+jwX5hrDnd70DlqbiOI4POChZlYxND9k7S4/C2tOMzY0e45EDwdObhhjSk7rRESLjot8bTHVuz9vXx/ACTH9s9NfClbr9casqAjTqHxUUiUcPk021uEvCPYOI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720198996; 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=fjefnuT26666vFKgTfVrGavvGsRgcBP7UZ3YVzlcYAZSMtHoG7UuWCsMwgxizdFERGXaex3C+yk+XQaWYLy39BSlQ9T0poCYiBEJg+tWnjkDUluVwNl+oDfnDMzj4CIKCZBKmw2CyLRE0/nbsiKUEzWgNHAxxapVugYl0X4cD54= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=TReJYSx1; 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="TReJYSx1" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0C9BFC4AF0B; Fri, 5 Jul 2024 17:03:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1720198995; bh=aIxGR7na/Qdc3ayjXzlWsssXh9j6/eXvzZW4Lz1mI/Q=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=TReJYSx1sCjaFckosgokJVYdFRsqdc+BEhrB6aLK/aeu7kaO3qZ0EY14m5FOVfeIV bquuw2wB7AGQAeXWVitRFh1iucPOFXlLIvpMO1xHm+pSXrnj2JfNcK+3uImbVUJqF8 ooVP46QyE9vcHkMC+vCCeyxejoUMK9J7MyO4dDaDlx5SzUZ2CruJdKJrVXtDZoY7OM n9G7T8zBnKQlervr77kDsbh/uWnOKDtqF9wkDmMcrFtbDcaTSw9MEBrBP63aMfsdpq jPjUQE4G1sPS53d+EAtLlH0HeUSTzP0a5rmiq+sxQ5cBkQ0+jqTP6hXvUixI69VNoB 97ddI9/Tc46VQ== From: Jeff Layton Date: Fri, 05 Jul 2024 13:02:41 -0400 Subject: [PATCH v3 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: <20240705-mgtime-v3-7-85b2daa9b335@kernel.org> References: <20240705-mgtime-v3-0-85b2daa9b335@kernel.org> In-Reply-To: <20240705-mgtime-v3-0-85b2daa9b335@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 , 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/ZANAwAIAQAOaEEZVoIVAcsmYgBmiCc9kz56sgDasuPVWKgUS6NFCixJC5I3irJH/ BJ6/27HOlmJAjMEAAEIAB0WIQRLwNeyRHGyoYTq9dMADmhBGVaCFQUCZognPQAKCRAADmhBGVaC FaabEACeX3QSlJx8oIO3SRGCQ+Om1KIdPCb3C38Fh01RPmQPMKulGZ6MoP+EegyFuxbH8BPk69D P0KfnfHp4PgPo/KVYA1IXdGLZl/ftLMHnSX/TSoHm5zsXYc+eE4VyfBjXrMkxK3uucFCipmehFL OonO5/qF6IhuwmuHA6hqOjKWjFusQBdNiCl/d0WlGJSTK2spR5fz+95PtBAKTaolM1FuRNPU0Np UF+bepYzTVyXvZu2D8RI386JfFI6MhEkOlR+zUbWS2j2eZZT8NUX4Mfu9g31FmS4/mM3/AWRVQy BWu7PXB+AJ2cQpK/KgrgAm/QYhHhjjBXk++FjAraItffpUyBIp0mpj+rODhirB/L4Ql0lDEr9qW G46O6Erz6NmeTBhZ/naS/BbbyX2nONvhsXU+C7E8rlLng+WVZjN5jGfHpm1Ddf0rNkZgIGUZMX1 +sKOcVouQRuTLN9Kwlyb5Ad35NIJwQLqnH1uX+uy9v68qD5eKL/irYtkXUJS4x/6jNu84uX5uor 67SSc5xXA7hQ+YOrHaSl91bPhqrPDmhI3w3chsfl1z/mh0Wt/xWUp3q/HnsoODCEOM2AHJvMisr X1ejiE3Sc9O7jkpCNMxwoA3FdcFBZlSIhPXGpEm9/tyvPIkrQqCAoJTAtVQnnIVzCUpOHoowEdl chcIJfIVrHpmk6g== 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");