From patchwork Wed Jul 20 13:56:29 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frediano Ziglio X-Patchwork-Id: 105750 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [140.186.70.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 0704BB6F6B for ; Thu, 21 Jul 2011 01:29:51 +1000 (EST) Received: from localhost ([::1]:56338 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QjYiZ-0004RB-4n for incoming@patchwork.ozlabs.org; Wed, 20 Jul 2011 11:29:47 -0400 Received: from eggs.gnu.org ([140.186.70.92]:48530) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QjXeK-0004Qv-Ae for qemu-devel@nongnu.org; Wed, 20 Jul 2011 10:21:26 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QjXeC-0001J1-KO for qemu-devel@nongnu.org; Wed, 20 Jul 2011 10:21:19 -0400 Received: from mail-iy0-f173.google.com ([209.85.210.173]:40444) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QjXJK-0004Xs-1X for qemu-devel@nongnu.org; Wed, 20 Jul 2011 09:59:38 -0400 Received: by iyb39 with SMTP id 39so230425iyb.4 for ; Wed, 20 Jul 2011 06:59:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references; bh=ajFshZ1skMZuoXmU46jcfjGOVqPurRq8fe+Ec9C2Xww=; b=HMvUJtx937/ZUhmXOtrdqsxYYNpM3XPCtAYAbnJHtQrsxjgS/kV8WrQLMRji0NZt5O BRzhrqwIifZ0dOhgSgscvYbxZcGJo277cwUTvmoGIhdSvTXbuHfHKPS2gBy8Z9IRvHkS LqBlTtR1WWLVvMc8LCjjwDsPtt/3kfHEe24XU= Received: by 10.231.111.36 with SMTP id q36mr7828560ibp.142.1311170376674; Wed, 20 Jul 2011 06:59:36 -0700 (PDT) Received: from localhost.localdomain (tor-exit-router41-readme.formlessnetworking.net [199.48.147.41]) by mx.google.com with ESMTPS id s2sm359274icw.17.2011.07.20.06.59.18 (version=TLSv1/SSLv3 cipher=OTHER); Wed, 20 Jul 2011 06:59:36 -0700 (PDT) From: Frediano Ziglio To: qemu-devel@nongnu.org Date: Wed, 20 Jul 2011 15:56:29 +0200 Message-Id: <1311170189-29734-6-git-send-email-freddy77@gmail.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1311170189-29734-1-git-send-email-freddy77@gmail.com> References: <1311170189-29734-1-git-send-email-freddy77@gmail.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 2) X-Received-From: 209.85.210.173 Cc: Kevin Wolf , Frediano Ziglio Subject: [Qemu-devel] [RFC PATCH 5/5] qcow: small optimization initializing QCowAIOCB 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 Signed-off-by: Frediano Ziglio --- block/qcow.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/block/qcow.c b/block/qcow.c index 007fb57..8fd1ee5 100644 --- a/block/qcow.c +++ b/block/qcow.c @@ -499,7 +499,6 @@ static QCowAIOCB *qcow_aio_setup(BlockDriverState *bs, int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, int is_write, QCowAIOCB *acb) { - memset(acb, 0, sizeof(*acb)); acb->bs = bs; acb->sector_num = sector_num; acb->qiov = qiov; @@ -509,6 +508,7 @@ static QCowAIOCB *qcow_aio_setup(BlockDriverState *bs, if (is_write) qemu_iovec_to_buffer(qiov, acb->buf); } else { + acb->orig_buf = NULL; acb->buf = (uint8_t *)qiov->iov->iov_base; } acb->nb_sectors = nb_sectors;