From patchwork Thu Jun 29 13:19:42 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 782241 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3wz0dn0JWKz9s3T for ; Thu, 29 Jun 2017 23:20:29 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753176AbdF2NU0 (ORCPT ); Thu, 29 Jun 2017 09:20:26 -0400 Received: from mail.kernel.org ([198.145.29.99]:60008 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753107AbdF2NUO (ORCPT ); Thu, 29 Jun 2017 09:20:14 -0400 Received: from tleilax.poochiereds.net (cpe-45-37-196-243.nc.res.rr.com [45.37.196.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 3742F22BDB; Thu, 29 Jun 2017 13:20:11 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3742F22BDB Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=jlayton@kernel.org From: jlayton@kernel.org 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: Carlos Maiolino , Eryu Guan , David Howells , Christoph Hellwig , Liu Bo , 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 v8 06/18] mm: clear AS_EIO/AS_ENOSPC when writeback initiation fails Date: Thu, 29 Jun 2017 09:19:42 -0400 Message-Id: <20170629131954.28733-7-jlayton@kernel.org> X-Mailer: git-send-email 2.13.0 In-Reply-To: <20170629131954.28733-1-jlayton@kernel.org> References: <20170629131954.28733-1-jlayton@kernel.org> Sender: linux-ext4-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org From: Jeff Layton filemap_write_and_wait{_range} will return an error if writeback initiation fails, but won't clear errors in the address_space. This is particularly problematic on DAX, as it's effectively synchronous. Ensure that we clear the AS_EIO/AS_ENOSPC flags when filemap_fdatawrite returns an error. Signed-off-by: Jeff Layton --- mm/filemap.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/mm/filemap.c b/mm/filemap.c index e5711b2728f4..49bc9720fb00 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -515,6 +515,9 @@ int filemap_write_and_wait(struct address_space *mapping) int err2 = filemap_fdatawait(mapping); if (!err) err = err2; + } else { + /* Clear any previously stored errors */ + filemap_check_errors(mapping); } } else { err = filemap_check_errors(mapping); @@ -549,6 +552,9 @@ int filemap_write_and_wait_range(struct address_space *mapping, lstart, lend); if (!err) err = err2; + } else { + /* Clear any previously stored errors */ + filemap_check_errors(mapping); } } else { err = filemap_check_errors(mapping);