From patchwork Thu Dec 19 02:27:40 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hu Tao X-Patchwork-Id: 303146 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id E60782C00A6 for ; Thu, 19 Dec 2013 13:34:35 +1100 (EST) Received: from localhost ([::1]:41695 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VtTPU-0007V8-0x for incoming@patchwork.ozlabs.org; Wed, 18 Dec 2013 21:32:24 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:60328) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VtTNE-0004KM-S8 for qemu-devel@nongnu.org; Wed, 18 Dec 2013 21:30:09 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VtTN7-0007mH-AY for qemu-devel@nongnu.org; Wed, 18 Dec 2013 21:30:04 -0500 Received: from [222.73.24.84] (port=51822 helo=song.cn.fujitsu.com) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VtTN6-0007li-Ur for qemu-devel@nongnu.org; Wed, 18 Dec 2013 21:29:57 -0500 X-IronPort-AV: E=Sophos;i="4.95,511,1384272000"; d="scan'208";a="9287751" Received: from unknown (HELO tang.cn.fujitsu.com) ([10.167.250.3]) by song.cn.fujitsu.com with ESMTP; 19 Dec 2013 10:26:11 +0800 Received: from fnstmail02.fnst.cn.fujitsu.com (tang.cn.fujitsu.com [127.0.0.1]) by tang.cn.fujitsu.com (8.14.3/8.13.1) with ESMTP id rBJ2TfM0004923; Thu, 19 Dec 2013 10:29:42 +0800 Received: from G08FNSTD100614.fnst.cn.fujitsu.com ([10.167.226.102]) by fnstmail02.fnst.cn.fujitsu.com (Lotus Domino Release 8.5.3) with ESMTP id 2013121910290981-563810 ; Thu, 19 Dec 2013 10:29:09 +0800 From: Hu Tao To: qemu-devel@nongnu.org Date: Thu, 19 Dec 2013 10:27:40 +0800 Message-Id: X-Mailer: git-send-email 1.7.11.7 In-Reply-To: References: X-MIMETrack: Itemize by SMTP Server on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2013/12/19 10:29:09, Serialize by Router on mailserver/fnst(Release 8.5.3|September 15, 2011) at 2013/12/19 10:29:13, Serialize complete at 2013/12/19 10:29:13 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 222.73.24.84 Cc: Kevin Wolf , Fam Zheng , Peter Lieven , hutao@cn.fujitsu.com Subject: [Qemu-devel] [RFC PATCH v3 5/6] qcow2: implement bdrv_preallocate 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: Hu Tao --- block/qcow2.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/block/qcow2.c b/block/qcow2.c index 32cb39f..487a595 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -2188,6 +2188,12 @@ static int qcow2_amend_options(BlockDriverState *bs, return 0; } +static int qcow2_preallocate(BlockDriverState *bs, int64_t offset, + int64_t length) +{ + return bdrv_preallocate(bs->file, offset, length); +} + static QEMUOptionParameter qcow2_create_options[] = { { .name = BLOCK_OPT_SIZE, @@ -2242,6 +2248,7 @@ static BlockDriver bdrv_qcow2 = { .bdrv_reopen_prepare = qcow2_reopen_prepare, .bdrv_create = qcow2_create, .bdrv_has_zero_init = bdrv_has_zero_init_1, + .bdrv_preallocate = qcow2_preallocate, .bdrv_co_get_block_status = qcow2_co_get_block_status, .bdrv_set_key = qcow2_set_key, .bdrv_make_empty = qcow2_make_empty,