From patchwork Tue Jan 26 03:58:58 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fam Zheng X-Patchwork-Id: 8117741 Return-Path: X-Original-To: patchwork-qemu-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 9E3C5BEEE5 for ; Tue, 26 Jan 2016 04:02:42 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 17B3E202E5 for ; Tue, 26 Jan 2016 04:02:42 +0000 (UTC) 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.kernel.org (Postfix) with ESMTPS id 6F1D4202DD for ; Tue, 26 Jan 2016 04:02:41 +0000 (UTC) Received: from localhost ([::1]:41790 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aNuq0-0005GF-QB for patchwork-qemu-devel@patchwork.kernel.org; Mon, 25 Jan 2016 23:02:40 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:33532) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aNuo7-0001sd-TV for qemu-devel@nongnu.org; Mon, 25 Jan 2016 23:00:44 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aNuo4-0005NF-OF for qemu-devel@nongnu.org; Mon, 25 Jan 2016 23:00:43 -0500 Received: from mx1.redhat.com ([209.132.183.28]:56950) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aNuo2-0005MQ-PK; Mon, 25 Jan 2016 23:00:38 -0500 Received: from int-mx10.intmail.prod.int.phx2.redhat.com (int-mx10.intmail.prod.int.phx2.redhat.com [10.5.11.23]) by mx1.redhat.com (Postfix) with ESMTPS id 55D4C5D; Tue, 26 Jan 2016 04:00:38 +0000 (UTC) Received: from fam-t430.redhat.com (vpn1-5-65.pek2.redhat.com [10.72.5.65]) by int-mx10.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u0Q3x4CM005788; Mon, 25 Jan 2016 23:00:32 -0500 From: Fam Zheng To: qemu-devel@nongnu.org Date: Tue, 26 Jan 2016 11:58:58 +0800 Message-Id: <1453780743-16806-12-git-send-email-famz@redhat.com> In-Reply-To: <1453780743-16806-1-git-send-email-famz@redhat.com> References: <1453780743-16806-1-git-send-email-famz@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.23 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 209.132.183.28 Cc: Kevin Wolf , qemu-block@nongnu.org, mreitz@redhat.com, Stefan Hajnoczi , pbonzini@redhat.com Subject: [Qemu-devel] [PATCH v9 11/16] vmdk: Fix calculation of block status's offset 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+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP "offset" is the offset of cluster and sector_num doesn't necessarily refer to the start of it, it should add index_in_cluster. Signed-off-by: Fam Zheng Reviewed-by: Max Reitz --- block/vmdk.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/block/vmdk.c b/block/vmdk.c index e1d3e27..61ed207 100644 --- a/block/vmdk.c +++ b/block/vmdk.c @@ -1274,6 +1274,7 @@ static int64_t coroutine_fn vmdk_co_get_block_status(BlockDriverState *bs, 0, 0); qemu_co_mutex_unlock(&s->lock); + index_in_cluster = vmdk_find_index_in_cluster(extent, sector_num); switch (ret) { case VMDK_ERROR: ret = -EIO; @@ -1287,13 +1288,14 @@ static int64_t coroutine_fn vmdk_co_get_block_status(BlockDriverState *bs, case VMDK_OK: ret = BDRV_BLOCK_DATA; if (extent->file == bs->file && !extent->compressed) { - ret |= BDRV_BLOCK_OFFSET_VALID | offset; + ret |= BDRV_BLOCK_OFFSET_VALID; + ret |= (offset + (index_in_cluster << BDRV_SECTOR_BITS)) + & BDRV_BLOCK_OFFSET_MASK; } break; } - index_in_cluster = vmdk_find_index_in_cluster(extent, sector_num); n = extent->cluster_sectors - index_in_cluster; if (n > nb_sectors) { n = nb_sectors;