From nobody Tue Feb 10 15:46:24 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; 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 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1522322254126847.4633924887224; Thu, 29 Mar 2018 04:17:34 -0700 (PDT) Received: from localhost ([::1]:41990 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1f1VYi-0007vF-3Q for importer@patchew.org; Thu, 29 Mar 2018 07:17:32 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:60783) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1f1VRQ-0001nM-MT for qemu-devel@nongnu.org; Thu, 29 Mar 2018 07:10:01 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1f1VRP-0003IE-NO for qemu-devel@nongnu.org; Thu, 29 Mar 2018 07:10:00 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:58466 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1f1VRJ-0003Gj-GC; Thu, 29 Mar 2018 07:09:53 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 2E16240201A7; Thu, 29 Mar 2018 11:09:53 +0000 (UTC) Received: from lemon.usersys.redhat.com (ovpn-12-85.pek2.redhat.com [10.72.12.85]) by smtp.corp.redhat.com (Postfix) with ESMTP id C22172024CA4; Thu, 29 Mar 2018 11:09:49 +0000 (UTC) From: Fam Zheng To: qemu-devel@nongnu.org Date: Thu, 29 Mar 2018 19:09:12 +0800 Message-Id: <20180329110914.20888-7-famz@redhat.com> In-Reply-To: <20180329110914.20888-1-famz@redhat.com> References: <20180329110914.20888-1-famz@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.6]); Thu, 29 Mar 2018 11:09:53 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.6]); Thu, 29 Mar 2018 11:09:53 +0000 (UTC) for IP:'10.11.54.4' DOMAIN:'int-mx04.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'famz@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [RFC PATCH 6/8] raw: Implement raw_co_map_range 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: Kevin Wolf , Fam Zheng , qemu-block@nongnu.org, Max Reitz , Stefan Hajnoczi , pbonzini@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Because raw can be seen as a "passthrough" format, its implementation of bdrv_co_map_range is exactly the same as bdrv_co_block_status. The BDRV_REQ_ALLOCATE flag can be ignored because no metadata update is necessary. Signed-off-by: Fam Zheng --- block/raw-format.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/block/raw-format.c b/block/raw-format.c index a378547c99..95e81af22d 100644 --- a/block/raw-format.c +++ b/block/raw-format.c @@ -263,6 +263,14 @@ static int coroutine_fn raw_co_block_status(BlockDrive= rState *bs, return BDRV_BLOCK_RAW | BDRV_BLOCK_OFFSET_VALID; } =20 +static int coroutine_fn raw_co_map_range(BlockDriverState *bs, int64_t off= set, + int64_t bytes, int64_t *pnum, int= 64_t *map, + BlockDriverState **file, + int flags) +{ + return raw_co_block_status(bs, true, offset, bytes, pnum, map, file); +} + static int coroutine_fn raw_co_pwrite_zeroes(BlockDriverState *bs, int64_t offset, int bytes, BdrvRequestFlags flags) @@ -498,6 +506,7 @@ BlockDriver bdrv_raw =3D { .bdrv_co_pwrite_zeroes =3D &raw_co_pwrite_zeroes, .bdrv_co_pdiscard =3D &raw_co_pdiscard, .bdrv_co_block_status =3D &raw_co_block_status, + .bdrv_co_map_range =3D &raw_co_map_range, .bdrv_truncate =3D &raw_truncate, .bdrv_getlength =3D &raw_getlength, .has_variable_length =3D true, --=20 2.14.3