From nobody Thu Oct 30 15:20:11 2025 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 1526041244182669.8170498245316; Fri, 11 May 2018 05:20:44 -0700 (PDT) Received: from localhost ([::1]:40053 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fH72R-0007ms-9t for importer@patchew.org; Fri, 11 May 2018 08:20:43 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:47133) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fH6rt-0003YF-3l for qemu-devel@nongnu.org; Fri, 11 May 2018 08:09:50 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fH6rs-0003fA-9o for qemu-devel@nongnu.org; Fri, 11 May 2018 08:09:49 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:49666 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 1fH6rn-0003bc-T1; Fri, 11 May 2018 08:09:43 -0400 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 8ECF07D65F; Fri, 11 May 2018 12:09:43 +0000 (UTC) Received: from lemon.usersys.redhat.com (ovpn-12-175.pek2.redhat.com [10.72.12.175]) by smtp.corp.redhat.com (Postfix) with ESMTP id B8A916B5B4; Fri, 11 May 2018 12:09:34 +0000 (UTC) From: Fam Zheng To: qemu-devel@nongnu.org Date: Fri, 11 May 2018 20:08:22 +0800 Message-Id: <20180511120823.7892-10-famz@redhat.com> In-Reply-To: <20180511120823.7892-1-famz@redhat.com> References: <20180511120823.7892-1-famz@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 11 May 2018 12:09:43 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 11 May 2018 12:09:43 +0000 (UTC) for IP:'10.11.54.5' DOMAIN:'int-mx05.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] [PATCH v4 09/10] block-backend: Add blk_co_copy_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 , Stefan Hajnoczi , qemu-block@nongnu.org, Peter Lieven , Max Reitz , Ronnie Sahlberg , Paolo Bonzini 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" It's a BlockBackend wrapper of the BDS interface. Signed-off-by: Fam Zheng Reviewed-by: Stefan Hajnoczi --- block/block-backend.c | 18 ++++++++++++++++++ include/sysemu/block-backend.h | 4 ++++ 2 files changed, 22 insertions(+) diff --git a/block/block-backend.c b/block/block-backend.c index 681b240b12..5562ec4238 100644 --- a/block/block-backend.c +++ b/block/block-backend.c @@ -2217,3 +2217,21 @@ void blk_unregister_buf(BlockBackend *blk, void *hos= t) { bdrv_unregister_buf(blk_bs(blk), host); } + +int coroutine_fn blk_co_copy_range(BlockBackend *blk_in, int64_t off_in, + BlockBackend *blk_out, int64_t off_out, + int bytes, BdrvRequestFlags flags) +{ + int r; + r =3D blk_check_byte_request(blk_in, off_in, bytes); + if (r) { + return r; + } + r =3D blk_check_byte_request(blk_out, off_out, bytes); + if (r) { + return r; + } + return bdrv_co_copy_range(blk_in->root, off_in, + blk_out->root, off_out, + bytes, flags); +} diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h index 92ab624fac..6f043b6b51 100644 --- a/include/sysemu/block-backend.h +++ b/include/sysemu/block-backend.h @@ -232,4 +232,8 @@ void blk_set_force_allow_inactivate(BlockBackend *blk); void blk_register_buf(BlockBackend *blk, void *host, size_t size); void blk_unregister_buf(BlockBackend *blk, void *host); =20 +int blk_co_copy_range(BlockBackend *blk_in, int64_t off_in, + BlockBackend *blk_out, int64_t off_out, + int bytes, BdrvRequestFlags flags); + #endif --=20 2.14.3