From patchwork Fri Jul 7 17:07:37 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Wolf X-Patchwork-Id: 9830823 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id DA277602BD for ; Fri, 7 Jul 2017 17:29:09 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BC35328620 for ; Fri, 7 Jul 2017 17:29:09 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id AE77D286F5; Fri, 7 Jul 2017 17:29:09 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 4A47A28620 for ; Fri, 7 Jul 2017 17:29:09 +0000 (UTC) Received: from localhost ([::1]:57795 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dTX40-0004rP-Hh for patchwork-qemu-devel@patchwork.kernel.org; Fri, 07 Jul 2017 13:29:08 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:41641) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dTWlA-0004yU-8I for qemu-devel@nongnu.org; Fri, 07 Jul 2017 13:09:41 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dTWl9-0007rt-7C for qemu-devel@nongnu.org; Fri, 07 Jul 2017 13:09:40 -0400 Received: from mx1.redhat.com ([209.132.183.28]:49642) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dTWl6-0007pt-QN; Fri, 07 Jul 2017 13:09:36 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id CFF9A7CE06; Fri, 7 Jul 2017 17:09:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com CFF9A7CE06 Authentication-Results: ext-mx04.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx04.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=kwolf@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com CFF9A7CE06 Received: from noname.redhat.com (ovpn-117-34.ams2.redhat.com [10.36.117.34]) by smtp.corp.redhat.com (Postfix) with ESMTP id DB2F0627DB; Fri, 7 Jul 2017 17:09:34 +0000 (UTC) From: Kevin Wolf To: qemu-block@nongnu.org Date: Fri, 7 Jul 2017 19:07:37 +0200 Message-Id: <1499447335-6125-23-git-send-email-kwolf@redhat.com> In-Reply-To: <1499447335-6125-1-git-send-email-kwolf@redhat.com> References: <1499447335-6125-1-git-send-email-kwolf@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.28]); Fri, 07 Jul 2017 17:09:36 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 022/100] stream: Switch stream_populate() to byte-based 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+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: Eric Blake We are gradually converting to byte-based interfaces, as they are easier to reason about than sector-based. Start by converting an internal function (no semantic change). Signed-off-by: Eric Blake Reviewed-by: John Snow Reviewed-by: Jeff Cody Reviewed-by: Kevin Wolf Signed-off-by: Kevin Wolf --- block/stream.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/block/stream.c b/block/stream.c index 6cb3939..746d525 100644 --- a/block/stream.c +++ b/block/stream.c @@ -41,20 +41,20 @@ typedef struct StreamBlockJob { } StreamBlockJob; static int coroutine_fn stream_populate(BlockBackend *blk, - int64_t sector_num, int nb_sectors, + int64_t offset, uint64_t bytes, void *buf) { struct iovec iov = { .iov_base = buf, - .iov_len = nb_sectors * BDRV_SECTOR_SIZE, + .iov_len = bytes, }; QEMUIOVector qiov; + assert(bytes < SIZE_MAX); qemu_iovec_init_external(&qiov, &iov, 1); /* Copy-on-read the unallocated clusters */ - return blk_co_preadv(blk, sector_num * BDRV_SECTOR_SIZE, qiov.size, &qiov, - BDRV_REQ_COPY_ON_READ); + return blk_co_preadv(blk, offset, qiov.size, &qiov, BDRV_REQ_COPY_ON_READ); } typedef struct { @@ -171,7 +171,8 @@ static void coroutine_fn stream_run(void *opaque) trace_stream_one_iteration(s, sector_num * BDRV_SECTOR_SIZE, n * BDRV_SECTOR_SIZE, ret); if (copy) { - ret = stream_populate(blk, sector_num, n, buf); + ret = stream_populate(blk, sector_num * BDRV_SECTOR_SIZE, + n * BDRV_SECTOR_SIZE, buf); } if (ret < 0) { BlockErrorAction action =