From patchwork Mon Apr 24 13:22:47 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeff Layton X-Patchwork-Id: 9696325 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 1F2DB601AE for ; Mon, 24 Apr 2017 13:30:53 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0E9DB28305 for ; Mon, 24 Apr 2017 13:30:53 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0173028335; Mon, 24 Apr 2017 13:30:52 +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=ham 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 A243128305 for ; Mon, 24 Apr 2017 13:30:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1171075AbdDXNYL (ORCPT ); Mon, 24 Apr 2017 09:24:11 -0400 Received: from mx1.redhat.com ([209.132.183.28]:50828 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1171052AbdDXNYD (ORCPT ); Mon, 24 Apr 2017 09:24:03 -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 4D0F3C04BD24; Mon, 24 Apr 2017 13:24:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 4D0F3C04BD24 Authentication-Results: ext-mx07.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx07.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=jlayton@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 4D0F3C04BD24 Received: from tleilax.poochiereds.net (ovpn-121-37.rdu2.redhat.com [10.10.121.37]) by smtp.corp.redhat.com (Postfix) with ESMTP id 4DB0088F10; Mon, 24 Apr 2017 13:23:59 +0000 (UTC) From: Jeff Layton To: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-ext4@vger.kernel.org, linux-cifs@vger.kernel.org, linux-mm@kvack.org, jfs-discussion@lists.sourceforge.net, linux-xfs@vger.kernel.org, cluster-devel@redhat.com, linux-f2fs-devel@lists.sourceforge.net, v9fs-developer@lists.sourceforge.net, osd-dev@open-osd.org, linux-nilfs@vger.kernel.org, linux-block@vger.kernel.org Cc: dhowells@redhat.com, akpm@linux-foundation.org, hch@infradead.org, ross.zwisler@linux.intel.com, mawilcox@microsoft.com, jack@suse.com, viro@zeniv.linux.org.uk, corbet@lwn.net, neilb@suse.de, clm@fb.com, tytso@mit.edu, axboe@kernel.dk Subject: [PATCH v3 08/20] mm: ensure that we set mapping error if writeout() fails Date: Mon, 24 Apr 2017 09:22:47 -0400 Message-Id: <20170424132259.8680-9-jlayton@redhat.com> In-Reply-To: <20170424132259.8680-1-jlayton@redhat.com> References: <20170424132259.8680-1-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 [10.5.110.31]); Mon, 24 Apr 2017 13:24:02 +0000 (UTC) Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP If writepage fails during a page migration, then we need to ensure that fsync will see it by flagging the mapping. Signed-off-by: Jeff Layton Reviewed-by: Christoph Hellwig Reviewed-by: Jan Kara --- mm/migrate.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/mm/migrate.c b/mm/migrate.c index 738f1d5f8350..3a59830bdae2 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -792,7 +792,11 @@ static int writeout(struct address_space *mapping, struct page *page) /* unlocked. Relock */ lock_page(page); - return (rc < 0) ? -EIO : -EAGAIN; + if (rc < 0) { + mapping_set_error(mapping, rc); + return -EIO; + } + return -EAGAIN; } /*