From patchwork Tue Oct 2 11:33:32 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Juan Quintela X-Patchwork-Id: 188488 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 646502C00A9 for ; Tue, 2 Oct 2012 22:41:36 +1000 (EST) Received: from localhost ([::1]:51945 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TJ0lE-0008AB-Fk for incoming@patchwork.ozlabs.org; Tue, 02 Oct 2012 07:35:36 -0400 Received: from eggs.gnu.org ([208.118.235.92]:37186) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TJ0kD-00076a-1b for qemu-devel@nongnu.org; Tue, 02 Oct 2012 07:34:38 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TJ0k7-00086L-6X for qemu-devel@nongnu.org; Tue, 02 Oct 2012 07:34:32 -0400 Received: from mx1.redhat.com ([209.132.183.28]:56109) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TJ0k6-00086H-Ud for qemu-devel@nongnu.org; Tue, 02 Oct 2012 07:34:27 -0400 Received: from int-mx01.intmail.prod.int.phx2.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id q92BYQwt019810 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Tue, 2 Oct 2012 07:34:26 -0400 Received: from trasno.mitica (ovpn-116-55.ams2.redhat.com [10.36.116.55]) by int-mx01.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id q92BXbb6001633; Tue, 2 Oct 2012 07:34:25 -0400 From: Juan Quintela To: qemu-devel@nongnu.org Date: Tue, 2 Oct 2012 13:33:32 +0200 Message-Id: <1349177616-5341-38-git-send-email-quintela@redhat.com> In-Reply-To: <1349177616-5341-1-git-send-email-quintela@redhat.com> References: <1349177616-5341-1-git-send-email-quintela@redhat.com> X-Scanned-By: MIMEDefang 2.67 on 10.5.11.11 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH 37/41] block-migration: Switch meaning of return value X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Make consistent the result of blk_mig_save_dirty_block() and mig_save_device_dirty() Signed-off-by: Juan Quintela Reviewed-by: Paolo Bonzini --- block-migration.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/block-migration.c b/block-migration.c index a822bb2..565628f 100644 --- a/block-migration.c +++ b/block-migration.c @@ -429,14 +429,18 @@ error: return 0; } +/* return value: + * 0: too much data for max_downtime + * 1: few enough data for max_downtime +*/ static int blk_mig_save_dirty_block(QEMUFile *f, int is_async) { BlkMigDevState *bmds; - int ret = 0; + int ret = 1; QSIMPLEQ_FOREACH(bmds, &block_mig_state.bmds_list, entry) { - if (mig_save_device_dirty(f, bmds, is_async) == 0) { - ret = 1; + ret = mig_save_device_dirty(f, bmds, is_async); + if (ret == 0) { break; } } @@ -594,7 +598,7 @@ static int block_save_iterate(QEMUFile *f, void *opaque) block_mig_state.bulk_completed = 1; } } else { - if (blk_mig_save_dirty_block(f, 1) == 0) { + if (blk_mig_save_dirty_block(f, 1) != 0) { /* no more dirty blocks */ break; } @@ -631,7 +635,7 @@ static int block_save_complete(QEMUFile *f, void *opaque) all async read completed */ assert(block_mig_state.submitted == 0); - while (blk_mig_save_dirty_block(f, 0) != 0) { + while (blk_mig_save_dirty_block(f, 0) == 0) { /* Do nothing */ } blk_mig_cleanup();