From patchwork Mon Apr 10 02:26:35 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fam Zheng X-Patchwork-Id: 748817 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 3w1Yzb608rz9s0m for ; Mon, 10 Apr 2017 12:29:31 +1000 (AEST) Received: from localhost ([::1]:60285 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cxP57-00081n-Cx for incoming@patchwork.ozlabs.org; Sun, 09 Apr 2017 22:29:29 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44178) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cxP2i-0006Qe-Qt for qemu-devel@nongnu.org; Sun, 09 Apr 2017 22:27:01 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cxP2f-0007Z6-MZ for qemu-devel@nongnu.org; Sun, 09 Apr 2017 22:27:00 -0400 Received: from mx1.redhat.com ([209.132.183.28]:53400) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1cxP2d-0007Y3-J9; Sun, 09 Apr 2017 22:26:55 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 79CB8552CE; Mon, 10 Apr 2017 02:26:54 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 79CB8552CE Authentication-Results: ext-mx05.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx05.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=famz@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 79CB8552CE Received: from lemon.redhat.com (ovpn-8-27.pek2.redhat.com [10.72.8.27]) by smtp.corp.redhat.com (Postfix) with ESMTP id 8ACCA831BE; Mon, 10 Apr 2017 02:26:47 +0000 (UTC) From: Fam Zheng To: qemu-devel@nongnu.org Date: Mon, 10 Apr 2017 10:26:35 +0800 Message-Id: <20170410022636.29925-2-famz@redhat.com> In-Reply-To: <20170410022636.29925-1-famz@redhat.com> References: <20170410022636.29925-1-famz@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.29]); Mon, 10 Apr 2017 02:26:54 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH v3 1/2] block: Make bdrv_parent_drained_begin/end public 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 , Ed Swierk , Stefan Hajnoczi , Paolo Bonzini Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Fam Zheng --- block/io.c | 4 ++-- include/block/block.h | 16 ++++++++++++++++ 2 files changed, 18 insertions(+), 2 deletions(-) diff --git a/block/io.c b/block/io.c index 7321dda..9598646 100644 --- a/block/io.c +++ b/block/io.c @@ -44,7 +44,7 @@ static void coroutine_fn bdrv_co_do_rw(void *opaque); static int coroutine_fn bdrv_co_do_pwrite_zeroes(BlockDriverState *bs, int64_t offset, int count, BdrvRequestFlags flags); -static void bdrv_parent_drained_begin(BlockDriverState *bs) +void bdrv_parent_drained_begin(BlockDriverState *bs) { BdrvChild *c; @@ -55,7 +55,7 @@ static void bdrv_parent_drained_begin(BlockDriverState *bs) } } -static void bdrv_parent_drained_end(BlockDriverState *bs) +void bdrv_parent_drained_end(BlockDriverState *bs) { BdrvChild *c; diff --git a/include/block/block.h b/include/block/block.h index 3e09222..488a07e 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -573,6 +573,22 @@ void bdrv_io_plug(BlockDriverState *bs); void bdrv_io_unplug(BlockDriverState *bs); /** + * bdrv_parent_drained_begin: + * + * Begin a quiesced section of all users of @bs. This is part of + * bdrv_drained_begin. + */ +void bdrv_parent_drained_begin(BlockDriverState *bs); + +/** + * bdrv_parent_drained_end: + * + * End a quiesced section of all users of @bs. This is part of + * bdrv_drained_end. + */ +void bdrv_parent_drained_end(BlockDriverState *bs); + +/** * bdrv_drained_begin: * * Begin a quiesced section for exclusive access to the BDS, by disabling