From patchwork Mon Jun 12 12:23:12 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 9780917 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 5BBFB60244 for ; Mon, 12 Jun 2017 12:25:14 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4329027FA1 for ; Mon, 12 Jun 2017 12:25:14 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 37E5227F9F; Mon, 12 Jun 2017 12:25:14 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D7BF426CFC for ; Mon, 12 Jun 2017 12:25:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752448AbdFLMXt (ORCPT ); Mon, 12 Jun 2017 08:23:49 -0400 Received: from mx1.redhat.com ([209.132.183.28]:59058 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752357AbdFLMXr (ORCPT ); Mon, 12 Jun 2017 08:23:47 -0400 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 3305680F8D; Mon, 12 Jun 2017 12:23:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 3305680F8D Authentication-Results: ext-mx03.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx03.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=jlayton@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 3305680F8D Received: from tleilax.poochiereds.net (ovpn-120-91.rdu2.redhat.com [10.10.120.91]) by smtp.corp.redhat.com (Postfix) with ESMTP id E37AD82F84; Mon, 12 Jun 2017 12:23:45 +0000 (UTC) From: Jeff Layton To: Andrew Morton , Al Viro , Jan Kara , tytso@mit.edu, axboe@kernel.dk, mawilcox@microsoft.com, ross.zwisler@linux.intel.com, corbet@lwn.net, Chris Mason , Josef Bacik , David Sterba , "Darrick J . Wong" Cc: linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-block@vger.kernel.org Subject: [PATCH v6 16/20] block: convert to errseq_t based writeback error tracking Date: Mon, 12 Jun 2017 08:23:12 -0400 Message-Id: <20170612122316.13244-21-jlayton@redhat.com> In-Reply-To: <20170612122316.13244-1-jlayton@redhat.com> References: <20170612122316.13244-1-jlayton@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.27]); Mon, 12 Jun 2017 12:23:47 +0000 (UTC) Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This is a very minimal conversion to errseq_t based error tracking for raw block device access. Only real change that is strictly required is that we must ensure that filemap_report_wb_err is unconditionally called after fsync, which is now done if FS_WB_ERRSEQ is set in fs_flags. That ensures that the errseq_t in the file is advanced to the latest value in the mapping. Note that there are internal callers that call sync_blockdev and the like that are not affected by this. They'll continue to use the AS_EIO/AS_ENOSPC flags for error reporting like they always have for now. Signed-off-by: Jeff Layton --- fs/block_dev.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/block_dev.c b/fs/block_dev.c index 4d62fe771587..4bf865cc99de 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -801,6 +801,7 @@ static struct file_system_type bd_type = { .name = "bdev", .mount = bd_mount, .kill_sb = kill_anon_super, + .fs_flags = FS_WB_ERRSEQ, }; struct super_block *blockdev_superblock __read_mostly;