From patchwork Fri Sep 11 12:32:26 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Naohiro Aota X-Patchwork-Id: 11771181 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B107B13B1 for ; Fri, 11 Sep 2020 17:44:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 941F1221ED for ; Fri, 11 Sep 2020 17:44:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=wdc.com header.i=@wdc.com header.b="m8l/rSS3" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726254AbgIKRo3 (ORCPT ); Fri, 11 Sep 2020 13:44:29 -0400 Received: from esa5.hgst.iphmx.com ([216.71.153.144]:38451 "EHLO esa5.hgst.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725883AbgIKMeD (ORCPT ); Fri, 11 Sep 2020 08:34:03 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1599827644; x=1631363644; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=VtUI/UUEY5r9r9zyt3U+9zudIoc620wwP7oYcJO7XcI=; b=m8l/rSS3feNftDH1YLSBObyYpVzQVNhzNZmvJHQglCKAcyhGxEsiHy+m AYTa2PQ35e6vGQUzE9TfnT0XVur0NALFUCpK3rwZM4RB/adGEnKy6JghW eaOmV+Q8neIRDm3oEPZFcsCBDGQSzfFmsAobAjJrGa8YoqNPHd1uF0WAx ctVAqX0sNqTTbzMtUJ3nDe4EcmoypA+3F/sP5AMH7IooLx5ikNlnSJdga Wy4x9fKPc2z8xYrlPJoh3jpavZqh7/pA2O2maMCWMwRgeYRM2GkgQous/ i4XsDURjnYlTJZ8bNcW/639NiZ/r/oQUVzQ66oRNhBkzjanys8UjPJbGo w==; IronPort-SDR: 17BzVFbg2H54vRdCSNefBCOc1JxQOOYvJXNjGzhBgncS2MD+uciM71r+M7wnYMZNXxIcnYhpPh c2OPutsrSqx6R1XVI2tVlRLhov2CKG8oJmknVvVLz4S/zHK1H7zlib2sMkQ+VXAzPJ9xtSAXp/ jEbHY1IlYw32R+00ruRRrxJ5aAP9Bj/tJiwbxsOIXWoKk1X58s9KdaxqQpfina4Sw82S0HFt1p KNG0VFqIAwL7U+gbiwzvo6BJ/zBKysB8mywWayulainKqriOLOXmCPdiuBc7K2XDMNjKG7IG4p xY8= X-IronPort-AV: E=Sophos;i="5.76,415,1592841600"; d="scan'208";a="147125963" Received: from h199-255-45-15.hgst.com (HELO uls-op-cesaep02.wdc.com) ([199.255.45.15]) by ob1.hgst.iphmx.com with ESMTP; 11 Sep 2020 20:33:17 +0800 IronPort-SDR: 2tRazSOvHIMVMyy66ue0N88Oonp6HzEaaH1aH3Ccq/TBGf8Wq1hijZ6pbs8FpZF6km4YTUCl5I HYOu6xJqzWSQ== Received: from uls-op-cesaip02.wdc.com ([10.248.3.37]) by uls-op-cesaep02.wdc.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Sep 2020 05:19:37 -0700 IronPort-SDR: 8CWfhvT5sZU0hE1c7f/XQF9xSa5tuj4FZjP5fBZ7HUAsBCuscTIeiFKpyIskDIlNYDZqaNYn0H vnd6mNYOd8DQ== WDCIronportException: Internal Received: from naota.dhcp.fujisawa.hgst.com ([10.149.52.155]) by uls-op-cesaip02.wdc.com with ESMTP; 11 Sep 2020 05:33:14 -0700 From: Naohiro Aota To: linux-btrfs@vger.kernel.org, David Sterba Cc: Chris Mason , Josef Bacik , Hannes Reinecke , linux-fsdevel@vger.kernel.org, Naohiro Aota , Johannes Thumshirn Subject: [PATCH v7 06/39] btrfs: disallow NODATACOW in ZONED mode Date: Fri, 11 Sep 2020 21:32:26 +0900 Message-Id: <20200911123259.3782926-7-naohiro.aota@wdc.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200911123259.3782926-1-naohiro.aota@wdc.com> References: <20200911123259.3782926-1-naohiro.aota@wdc.com> MIME-Version: 1.0 Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org NODATACOW implies overwriting the file data on a device, which is impossible in sequential required zones. Disable NODATACOW globally with mount option and per-file NODATACOW attribute by masking FS_NOCOW_FL. Reviewed-by: Johannes Thumshirn Reviewed-by: Josef Bacik Signed-off-by: Naohiro Aota --- fs/btrfs/ioctl.c | 3 +++ fs/btrfs/zoned.c | 6 ++++++ 2 files changed, 9 insertions(+) diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index ac45f022b495..548692cdc5df 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -91,6 +91,9 @@ struct btrfs_ioctl_send_args_32 { static unsigned int btrfs_mask_fsflags_for_type(struct inode *inode, unsigned int flags) { + if (btrfs_fs_incompat(btrfs_sb(inode->i_sb), ZONED)) + flags &= ~FS_NOCOW_FL; + if (S_ISDIR(inode->i_mode)) return flags; else if (S_ISREG(inode->i_mode)) diff --git a/fs/btrfs/zoned.c b/fs/btrfs/zoned.c index 1629e585ba8c..6bce654bb0e8 100644 --- a/fs/btrfs/zoned.c +++ b/fs/btrfs/zoned.c @@ -284,5 +284,11 @@ int btrfs_check_mountopts_zoned(struct btrfs_fs_info *info) return -EOPNOTSUPP; } + if (btrfs_test_opt(info, NODATACOW)) { + btrfs_err(info, + "cannot enable nodatacow with ZONED mode"); + return -EOPNOTSUPP; + } + return 0; }