From patchwork Thu Mar 15 03:45:07 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fam Zheng X-Patchwork-Id: 10283893 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 7D65460291 for ; Thu, 15 Mar 2018 03:46:15 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5D7782880A for ; Thu, 15 Mar 2018 03:46:15 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5239F2880C; Thu, 15 Mar 2018 03:46:15 +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 lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id E637B2880A for ; Thu, 15 Mar 2018 03:46:14 +0000 (UTC) Received: from localhost ([::1]:49558 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ewJqH-0007Ef-Cs for patchwork-qemu-devel@patchwork.kernel.org; Wed, 14 Mar 2018 23:46:13 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:35335) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ewJpZ-0006rH-BJ for qemu-devel@nongnu.org; Wed, 14 Mar 2018 23:45:30 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ewJpY-0003ao-E9 for qemu-devel@nongnu.org; Wed, 14 Mar 2018 23:45:29 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:54950 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ewJpT-0003Wj-5h; Wed, 14 Mar 2018 23:45:23 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id DE71B406E8BE; Thu, 15 Mar 2018 03:45:18 +0000 (UTC) Received: from lemon.usersys.redhat.com (ovpn-12-59.pek2.redhat.com [10.72.12.59]) by smtp.corp.redhat.com (Postfix) with ESMTP id B657F11701C6; Thu, 15 Mar 2018 03:45:12 +0000 (UTC) From: Fam Zheng To: qemu-devel@nongnu.org Date: Thu, 15 Mar 2018 11:45:07 +0800 Message-Id: <20180315034507.6341-1-famz@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Thu, 15 Mar 2018 03:45:18 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.7]); Thu, 15 Mar 2018 03:45:18 +0000 (UTC) for IP:'10.11.54.3' DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'famz@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH] vvfat: Fix inherit_options flags X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , stefanha@redhat.com, qemu-block@nongnu.org, Max Reitz Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP Overriding flags violates the precedence rules of bdrv_reopen_queue_child. Just like the read-only option, no-flush should be put into the options. The same is done in bdrv_temp_snapshot_options. Reported-by: Stefan Hajnoczi Reviewed-by: Eric Blake Reviewed-by: Stefan Hajnoczi --- block/vvfat.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/vvfat.c b/block/vvfat.c index 4a17a49e12..1569783b0f 100644 --- a/block/vvfat.c +++ b/block/vvfat.c @@ -3129,7 +3129,7 @@ static void vvfat_qcow_options(int *child_flags, QDict *child_options, int parent_flags, QDict *parent_options) { qdict_set_default_str(child_options, BDRV_OPT_READ_ONLY, "off"); - *child_flags = BDRV_O_NO_FLUSH; + qdict_set_default_str(child_options, BDRV_OPT_CACHE_NO_FLUSH, "on"); } static const BdrvChildRole child_vvfat_qcow = {