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=-15.1 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 D4E1FC47096 for ; Thu, 3 Jun 2021 21:12:38 +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 8A5B2613EA for ; Thu, 3 Jun 2021 21:12:38 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8A5B2613EA 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]:56636 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1loudm-000617-3t for qemu-devel@archiver.kernel.org; Thu, 03 Jun 2021 17:12:34 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:52768) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1loucq-0004aa-Lo for qemu-devel@nongnu.org; Thu, 03 Jun 2021 17:11:36 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:36896) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1loucp-0005Uu-7A for qemu-devel@nongnu.org; Thu, 03 Jun 2021 17:11:36 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1622754694; 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: in-reply-to:in-reply-to:references:references; bh=KZqnwCNijcPhWN5k5PJDQ8k4nXcOjuAQUDSAMA69SrI=; b=QLjicKT3TxEyVwLqL4Ntgb49/iB3XKKmmI0BFI/yhR2nu1dh54TITEwpvdTYYUHmM+25rG O0F7fZqlbKlrcnsWTPuAfd8jtU0ln3jQEvG4PLEC4taAVAwjSOVK5KZyPJvA49oUyEPRZY 9vDDwXie8nFKbsmRyi7SdSP49XBaxEw= 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-266-R7mkB7ggMMuPvMhejoXCVQ-1; Thu, 03 Jun 2021 17:11:33 -0400 X-MC-Unique: R7mkB7ggMMuPvMhejoXCVQ-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 0F367100945E; Thu, 3 Jun 2021 21:11:32 +0000 (UTC) Received: from redhat.com (ovpn-113-53.phx2.redhat.com [10.3.113.53]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 76B721002D71; Thu, 3 Jun 2021 21:11:31 +0000 (UTC) Date: Thu, 3 Jun 2021 16:11:29 -0500 From: Eric Blake To: Vladimir Sementsov-Ogievskiy Subject: Re: [PATCH v3 32/33] block/nbd: safer transition to receiving request Message-ID: <20210603211129.asvngeqkvskrobzc@redhat.com> References: <20210416080911.83197-1-vsementsov@virtuozzo.com> <20210416080911.83197-33-vsementsov@virtuozzo.com> MIME-Version: 1.0 In-Reply-To: <20210416080911.83197-33-vsementsov@virtuozzo.com> User-Agent: NeoMutt/20210205 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 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=us-ascii Content-Disposition: inline Received-SPF: pass client-ip=170.10.133.124; envelope-from=eblake@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -31 X-Spam_score: -3.2 X-Spam_bar: --- X-Spam_report: (-3.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.37, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable 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, qemu-block@nongnu.org, qemu-devel@nongnu.org, mreitz@redhat.com, rvkagan@yandex-team.ru, den@openvz.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Fri, Apr 16, 2021 at 11:09:10AM +0300, Vladimir Sementsov-Ogievskiy wrote: > req->receiving is a flag of request being in one concrete yield point > in nbd_co_do_receive_one_chunk(). > > Such kind of boolean flag is always better to unset before scheduling > the coroutine, to avoid double scheduling. So, let's be more careful. > > Signed-off-by: Vladimir Sementsov-Ogievskiy > --- > block/nbd.c | 6 ++++-- > 1 file changed, 4 insertions(+), 2 deletions(-) > > @@ -614,7 +616,7 @@ static int nbd_co_send_request(BlockDriverState *bs, > if (qiov) { > qio_channel_set_cork(s->ioc, true); > rc = nbd_send_request(s->ioc, request); > - if (nbd_clinet_connected(s) && rc >= 0) { > + if (nbd_client_connected(s) && rc >= 0) { Ouch - typo fix in clinet seems unrelated in this fix; please hoist it into the correct point in the series so that we don't have the typo in the first place. Otherwise, Reviewed-by: Eric Blake -- Eric Blake, Principal Software Engineer Red Hat, Inc. +1-919-301-3266 Virtualization: qemu.org | libvirt.org