From nobody Wed Dec 17 21:44:51 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1556639984; cv=none; d=zoho.com; s=zohoarc; b=SQCmV0BKqbZabBCwqylFnAP2ziHRzqY/I1R8rj3igtACNd5SiqXqZCkizRA09XUItkBYxu53FGgBcW6yDqmqRL3U+KCE3X44DpjqlRsZjg596KjpaNfnymGjzcmkb9+GbYqFaYxYSyA0LBAi5Md/MqJVA9yzwmEdlS4FfxGBxVE= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1556639984; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To:ARC-Authentication-Results; bh=ctoCEBC5hGilWPSRyKQbx5qOE5cleuvMlU154hxHfeg=; b=JwFRTGXHWnSiaqylx+e/KPpfoNhKchuXF4VCMOC32oYKX44QgtGTbjipYpOp9vL7apS+bqZ93HLbbyLp1QMmR3WgYSUoeyby+f129BbPhH1IjRGPoZAr2HHDSqxVTZUf4nV3tiWDtZVrYyatBi3eoZIv9ux2cOQpjHciw+TyI+g= ARC-Authentication-Results: i=1; mx.zoho.com; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1556639984539677.3885105359159; Tue, 30 Apr 2019 08:59:44 -0700 (PDT) Received: from localhost ([127.0.0.1]:49041 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hLVAQ-0004Dm-I7 for importer@patchew.org; Tue, 30 Apr 2019 11:59:38 -0400 Received: from eggs.gnu.org ([209.51.188.92]:49091) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hLUv1-0008Cw-98 for qemu-devel@nongnu.org; Tue, 30 Apr 2019 11:43:44 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hLUv0-0002F1-AQ for qemu-devel@nongnu.org; Tue, 30 Apr 2019 11:43:43 -0400 Received: from mx1.redhat.com ([209.132.183.28]:60158) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hLUux-0002Cz-T9; Tue, 30 Apr 2019 11:43:40 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 2E309883AC; Tue, 30 Apr 2019 15:43:39 +0000 (UTC) Received: from linux.fritz.box.com (unknown [10.36.118.15]) by smtp.corp.redhat.com (Postfix) with ESMTP id 47BF64D5; Tue, 30 Apr 2019 15:43:38 +0000 (UTC) From: Kevin Wolf To: qemu-block@nongnu.org Date: Tue, 30 Apr 2019 17:42:41 +0200 Message-Id: <20190430154244.30083-25-kwolf@redhat.com> In-Reply-To: <20190430154244.30083-1-kwolf@redhat.com> References: <20190430154244.30083-1-kwolf@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.26]); Tue, 30 Apr 2019 15:43:39 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 24/27] qemu-img: use buffer-based io X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" From: Vladimir Sementsov-Ogievskiy Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Stefan Hajnoczi Reviewed-by: Stefano Garzarella Signed-off-by: Kevin Wolf --- qemu-img.c | 13 ++++--------- 1 file changed, 4 insertions(+), 9 deletions(-) diff --git a/qemu-img.c b/qemu-img.c index ddd55ab291..e6ad5978e0 100644 --- a/qemu-img.c +++ b/qemu-img.c @@ -1680,7 +1680,6 @@ static int coroutine_fn convert_co_read(ImgConvertSta= te *s, int64_t sector_num, int nb_sectors, uint8_t *buf) { int n, ret; - QEMUIOVector qiov; =20 assert(nb_sectors <=3D s->buf_sectors); while (nb_sectors > 0) { @@ -1696,11 +1695,10 @@ static int coroutine_fn convert_co_read(ImgConvertS= tate *s, int64_t sector_num, bs_sectors =3D s->src_sectors[src_cur]; =20 n =3D MIN(nb_sectors, bs_sectors - (sector_num - src_cur_offset)); - qemu_iovec_init_buf(&qiov, buf, n << BDRV_SECTOR_BITS); =20 - ret =3D blk_co_preadv( + ret =3D blk_co_pread( blk, (sector_num - src_cur_offset) << BDRV_SECTOR_BITS, - n << BDRV_SECTOR_BITS, &qiov, 0); + n << BDRV_SECTOR_BITS, buf, 0); if (ret < 0) { return ret; } @@ -1719,7 +1717,6 @@ static int coroutine_fn convert_co_write(ImgConvertSt= ate *s, int64_t sector_num, enum ImgConvertBlockStatus status) { int ret; - QEMUIOVector qiov; =20 while (nb_sectors > 0) { int n =3D nb_sectors; @@ -1747,10 +1744,8 @@ static int coroutine_fn convert_co_write(ImgConvertS= tate *s, int64_t sector_num, (s->compressed && !buffer_is_zero(buf, n * BDRV_SECTOR_SIZE))) { - qemu_iovec_init_buf(&qiov, buf, n << BDRV_SECTOR_BITS); - - ret =3D blk_co_pwritev(s->target, sector_num << BDRV_SECTO= R_BITS, - n << BDRV_SECTOR_BITS, &qiov, flags); + ret =3D blk_co_pwrite(s->target, sector_num << BDRV_SECTOR= _BITS, + n << BDRV_SECTOR_BITS, buf, flags); if (ret < 0) { return ret; } --=20 2.20.1