From patchwork Mon Jun 26 11:04:24 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: sochin jiang X-Patchwork-Id: 9809119 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 16830603F2 for ; Mon, 26 Jun 2017 11:10:36 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E008E25D9E for ; Mon, 26 Jun 2017 11:10:29 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D45FD269E2; Mon, 26 Jun 2017 11:10:29 +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 5B48325D9E for ; Mon, 26 Jun 2017 11:10:29 +0000 (UTC) Received: from localhost ([::1]:45909 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dPRuV-0001W0-4d for patchwork-qemu-devel@patchwork.kernel.org; Mon, 26 Jun 2017 07:10:27 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48932) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dPRts-0001Uh-02 for qemu-devel@nongnu.org; Mon, 26 Jun 2017 07:09:48 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dPRtr-0000Mb-2r for qemu-devel@nongnu.org; Mon, 26 Jun 2017 07:09:47 -0400 Received: from szxga02-in.huawei.com ([45.249.212.188]:3953) by eggs.gnu.org with esmtps (TLS1.0:RSA_ARCFOUR_SHA1:16) (Exim 4.71) (envelope-from ) id 1dPRtm-0000HT-Af; Mon, 26 Jun 2017 07:09:42 -0400 Received: from 172.30.72.56 (EHLO dggeml405-hub.china.huawei.com) ([172.30.72.56]) by dggrg02-dlp.huawei.com (MOS 4.4.6-GA FastPath queued) with ESMTP id AQA33673; Mon, 26 Jun 2017 19:09:33 +0800 (CST) Received: from localhost.localdomain (10.175.105.102) by dggeml405-hub.china.huawei.com (10.3.17.49) with Microsoft SMTP Server id 14.3.301.0; Mon, 26 Jun 2017 19:09:25 +0800 From: "sochin.jiang" To: , Date: Mon, 26 Jun 2017 19:04:24 +0800 Message-ID: <1498475064-39816-1-git-send-email-sochin.jiang@huawei.com> X-Mailer: git-send-email 1.8.3.1 MIME-Version: 1.0 X-Originating-IP: [10.175.105.102] X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A020206.5950EB6E.00DA, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=0.0.0.0, so=2014-11-16 11:51:01, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: e7687bbd27755567d70846f0ecdee257 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.4.x-2.6.x [generic] [fuzzy] X-Received-From: 45.249.212.188 Subject: [Qemu-devel] [PATCH] mirror: fix the inconsistent AioContext problem in the backing BDSs during mirroring. 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: xieyingtai@huawei.com, lina.lulina@huawei.com, lizhengui@huawei.com, qemu-block@nongnu.org, subo7@huawei.com, eric.fangyi@huawei.com, zhangshuai13@huawei.com, qemu-devel@nongnu.org, sochin.jiang@huawei.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: "sochin.jiang" mirror_complete opens the backings, BDSs of the new open backings should have a same AioContext with the top when using iothreads, fix the code to guarantee this, also avoiding unexpected qemu exit(assert fails in bdrv_attach_child). Signed-off-by: sochin.jiang --- block.c | 1 + 1 file changed, 1 insertion(+) diff --git a/block.c b/block.c index 6943962..b312fe6 100644 --- a/block.c +++ b/block.c @@ -2185,6 +2185,7 @@ int bdrv_open_backing_file(BlockDriverState *bs, QDict *parent_options, ret = -EINVAL; goto free_exit; } + bdrv_set_aio_context(backing_hd, bdrv_get_aio_context(bs)); /* Hook up the backing file link; drop our reference, bs owns the * backing_hd reference now */