From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,NICE_REPLY_A,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0A790C4727E for ; Mon, 28 Sep 2020 15:11:40 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5BD58207F7 for ; Mon, 28 Sep 2020 15:11:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Hg71WNg9" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5BD58207F7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:59846 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kMuoU-0005Xp-5J for qemu-devel@archiver.kernel.org; Mon, 28 Sep 2020 11:11:38 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:42204) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kMun8-0004tu-Sd for qemu-devel@nongnu.org; Mon, 28 Sep 2020 11:10:14 -0400 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:60399) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kMun4-0002zV-Mq for qemu-devel@nongnu.org; Mon, 28 Sep 2020 11:10:14 -0400 Dkim-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1601305806; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ukJQ8rtcF3r9wXCP/9sUpvHU6wK2s3UZDYIDOdhA02Y=; b=Hg71WNg9qTvMrRWdwY80bh0hDEsnMhuvWS6gyy0i9uD0CfwFeanUUtbR6Gwna5sr6W9ncT 1GSyYdBr/0cSwYcK972oJu2eorWdCYCvCwHNP6WutRKhoP+6OFMu8GL2z3R+VCD1l1KzQ3 TirhxoG2cMNRza5ylHMicY5DXcY+W5Y= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-286-fxbJ0Gm1PgmTmikByfA1_g-1; Mon, 28 Sep 2020 11:10:02 -0400 X-MC-Unique: fxbJ0Gm1PgmTmikByfA1_g-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 35B8A1005513; Mon, 28 Sep 2020 15:10:01 +0000 (UTC) Received: from [10.3.112.208] (ovpn-112-208.phx2.redhat.com [10.3.112.208]) by smtp.corp.redhat.com (Postfix) with ESMTPS id E54FD60C05; Mon, 28 Sep 2020 15:09:59 +0000 (UTC) Subject: Re: [RFC PATCH 4/7] block-backend: add I/O hang drain when disbale To: Ying Fang , qemu-devel@nongnu.org References: <20200927130420.1095-1-fangying1@huawei.com> <20200927130420.1095-5-fangying1@huawei.com> From: Eric Blake Organization: Red Hat, Inc. Message-ID: <71628153-a9f5-733d-d3ed-a8d4d4dc4f8f@redhat.com> Date: Mon, 28 Sep 2020 10:09:59 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0 MIME-Version: 1.0 In-Reply-To: <20200927130420.1095-5-fangying1@huawei.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=eblake@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=63.128.21.124; envelope-from=eblake@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/28 03:47:08 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.687, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, Jiahui Cen , zhang.zhanghailiang@huawei.com, mreitz@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 9/27/20 8:04 AM, Ying Fang wrote: In the subject: s/disbale/disabled/ > To disable I/O hang, all hanging AIOs need to be drained. A rehandle status > field is introduced to notify rehandle mechanism not to rehandle failed AIOs > when I/O hang is disabled. > > Signed-off-by: Ying Fang > Signed-off-by: Jiahui Cen > --- > block/block-backend.c | 85 ++++++++++++++++++++++++++++++++-- > include/sysemu/block-backend.h | 3 ++ > 2 files changed, 84 insertions(+), 4 deletions(-) > -- Eric Blake, Principal Software Engineer Red Hat, Inc. +1-919-301-3226 Virtualization: qemu.org | libvirt.org