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=-8.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,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 6ED13C433FF for ; Wed, 7 Aug 2019 17:36:28 +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 423882086D for ; Wed, 7 Aug 2019 17:36:28 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 423882086D 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]:43886 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hvPrP-0003v0-Jf for qemu-devel@archiver.kernel.org; Wed, 07 Aug 2019 13:36:27 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:56139) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hvPqv-0002pX-Ig for qemu-devel@nongnu.org; Wed, 07 Aug 2019 13:35:58 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hvPqu-0002Vg-Lo for qemu-devel@nongnu.org; Wed, 07 Aug 2019 13:35:57 -0400 Received: from mx1.redhat.com ([209.132.183.28]:46174) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hvPqu-0002UI-Gg for qemu-devel@nongnu.org; Wed, 07 Aug 2019 13:35:56 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id CFB53EC522; Wed, 7 Aug 2019 17:35:55 +0000 (UTC) Received: from work-vm (ovpn-117-204.ams2.redhat.com [10.36.117.204]) by smtp.corp.redhat.com (Postfix) with ESMTPS id F213360605; Wed, 7 Aug 2019 17:35:54 +0000 (UTC) Date: Wed, 7 Aug 2019 18:35:52 +0100 From: "Dr. David Alan Gilbert" To: Wei Yang Message-ID: <20190807173552.GH27871@work-vm> References: <20190718083747.5859-1-richardw.yang@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190718083747.5859-1-richardw.yang@linux.intel.com> User-Agent: Mutt/1.12.1 (2019-06-15) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.38]); Wed, 07 Aug 2019 17:35:55 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: Re: [Qemu-devel] [PATCH] migration/postcopy: start_postcopy could be true only when migrate_postcopy() return true 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: qemu-devel@nongnu.org, quintela@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" * Wei Yang (richardw.yang@linux.intel.com) wrote: > There is only one place to set start_postcopy to true, > qmp_migrate_start_postcopy(), which make sure start_postcopy could be > set to true when migrate_postcopy() return true. > > So start_postcopy is true implies the other one. > > Signed-off-by: Wei Yang Queued > --- > migration/migration.c | 3 +-- > 1 file changed, 1 insertion(+), 2 deletions(-) > > diff --git a/migration/migration.c b/migration/migration.c > index 719d125041..27ca10122f 100644 > --- a/migration/migration.c > +++ b/migration/migration.c > @@ -3101,8 +3101,7 @@ static MigIterateState migration_iteration_run(MigrationState *s) > > if (pending_size && pending_size >= s->threshold_size) { > /* Still a significant amount to transfer */ > - if (migrate_postcopy() && !in_postcopy && > - pend_pre <= s->threshold_size && > + if (!in_postcopy && pend_pre <= s->threshold_size && > atomic_read(&s->start_postcopy)) { > if (postcopy_start(s)) { > error_report("%s: postcopy failed to start", __func__); > -- > 2.17.1 > > -- Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK