From patchwork Wed Mar 16 10:10:16 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fam Zheng X-Patchwork-Id: 8597211 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 1E1B0C0553 for ; Wed, 16 Mar 2016 10:11:07 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 79192202BE for ; Wed, 16 Mar 2016 10:11:06 +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 CCB6C20225 for ; Wed, 16 Mar 2016 10:11:05 +0000 (UTC) Received: from localhost ([::1]:54309 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ag8Px-0007Zy-4T for patchwork-qemu-devel@patchwork.kernel.org; Wed, 16 Mar 2016 06:11:05 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:47106) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ag8Pb-0007V8-3O for qemu-devel@nongnu.org; Wed, 16 Mar 2016 06:10:43 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ag8PX-0005gm-CM for qemu-devel@nongnu.org; Wed, 16 Mar 2016 06:10:43 -0400 Received: from mx1.redhat.com ([209.132.183.28]:48864) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ag8PN-0005eG-Tb; Wed, 16 Mar 2016 06:10:30 -0400 Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) by mx1.redhat.com (Postfix) with ESMTPS id 95A1864363; Wed, 16 Mar 2016 10:10:29 +0000 (UTC) Received: from fam-t430.redhat.com (vpn1-6-163.pek2.redhat.com [10.72.6.163]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u2GAAIo5010795; Wed, 16 Mar 2016 06:10:26 -0400 From: Fam Zheng To: qemu-devel@nongnu.org Date: Wed, 16 Mar 2016 18:10:16 +0800 Message-Id: <1458123018-18651-3-git-send-email-famz@redhat.com> In-Reply-To: <1458123018-18651-1-git-send-email-famz@redhat.com> References: <1458123018-18651-1-git-send-email-famz@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.24 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Wed, 16 Mar 2016 10:10:29 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Cc: Kevin Wolf , qemu-block@nongnu.org, "Michael S. Tsirkin" , tubo@linux.vnet.ibm.com, Stefan Hajnoczi , cornelia.huck@de.ibm.com, pbonzini@redhat.com, borntraeger@de.ibm.com Subject: [Qemu-devel] [PATCH 2/4] block-backend: Introduce blk_drained_begin/end 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 They forward the call to bdrv_* counterparts. Signed-off-by: Fam Zheng --- block/block-backend.c | 14 ++++++++++++++ include/sysemu/block-backend.h | 2 ++ 2 files changed, 16 insertions(+) diff --git a/block/block-backend.c b/block/block-backend.c index 03e71b4..d686a63 100644 --- a/block/block-backend.c +++ b/block/block-backend.c @@ -891,6 +891,20 @@ void blk_drain(BlockBackend *blk) } } +void blk_drained_begin(BlockBackend *blk) +{ + if (blk->bs) { + bdrv_drained_begin(blk->bs); + } +} + +void blk_drained_end(BlockBackend *blk) +{ + if (blk->bs) { + bdrv_drained_end(blk->bs); + } +} + void blk_drain_all(void) { bdrv_drain_all(); diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h index 00d69ba..2cd53d0 100644 --- a/include/sysemu/block-backend.h +++ b/include/sysemu/block-backend.h @@ -128,6 +128,8 @@ int blk_co_flush(BlockBackend *blk); int blk_flush(BlockBackend *blk); int blk_flush_all(void); void blk_drain(BlockBackend *blk); +void blk_drained_begin(BlockBackend *blk); +void blk_drained_end(BlockBackend *blk); void blk_drain_all(void); void blk_set_on_error(BlockBackend *blk, BlockdevOnError on_read_error, BlockdevOnError on_write_error);