From patchwork Wed Sep 21 11:33:26 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pavel Dovgalyuk X-Patchwork-Id: 9343339 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 275CC607D0 for ; Wed, 21 Sep 2016 11:34:17 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 166492A536 for ; Wed, 21 Sep 2016 11:34:17 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0B3D52A575; Wed, 21 Sep 2016 11:34:17 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 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.wl.linuxfoundation.org (Postfix) with ESMTPS id 8C4692A536 for ; Wed, 21 Sep 2016 11:34:16 +0000 (UTC) Received: from localhost ([::1]:41640 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bmfn5-0006Bn-MB for patchwork-qemu-devel@patchwork.kernel.org; Wed, 21 Sep 2016 07:34:15 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:39474) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bmfmZ-0006AS-S4 for qemu-devel@nongnu.org; Wed, 21 Sep 2016 07:33:44 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bmfmV-0007SW-KT for qemu-devel@nongnu.org; Wed, 21 Sep 2016 07:33:42 -0400 Received: from mail.ispras.ru ([83.149.199.45]:59370) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bmfmV-0007Ni-Ch for qemu-devel@nongnu.org; Wed, 21 Sep 2016 07:33:39 -0400 Received: from PASHA-ISP.def.inno (unknown [85.142.117.224]) by mail.ispras.ru (Postfix) with ESMTPSA id C687E540068; Wed, 21 Sep 2016 14:33:27 +0300 (MSK) To: qemu-devel@nongnu.org From: Pavel Dovgalyuk Date: Wed, 21 Sep 2016 14:33:26 +0300 Message-ID: <20160921113326.1420.66377.stgit@PASHA-ISP.def.inno> In-Reply-To: <20160921113303.1420.63544.stgit@PASHA-ISP.def.inno> References: <20160921113303.1420.63544.stgit@PASHA-ISP.def.inno> User-Agent: StGit/0.16 MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 83.149.199.45 Subject: [Qemu-devel] [PATCH v4 4/8] block: implement bdrv_recurse_is_first_non_filter for blkreplay 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: peter.maydell@linaro.org, jasowang@redhat.com, pbonzini@redhat.com, mst@redhat.com, quintela@redhat.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP This patch adds bdrv_recurse_is_first_non_filter implementation for blkreplay driver. It allows creating snapshots when blkreplay is enabled. Signed-off-by: Pavel Dovgalyuk --- block/blkreplay.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/block/blkreplay.c b/block/blkreplay.c index 30f9d5f..ca18906 100644 --- a/block/blkreplay.c +++ b/block/blkreplay.c @@ -135,6 +135,12 @@ static int coroutine_fn blkreplay_co_flush(BlockDriverState *bs) return ret; } +static bool blkreplay_recurse_is_first_non_filter(BlockDriverState *bs, + BlockDriverState *candidate) +{ + return bdrv_recurse_is_first_non_filter(bs->file->bs, candidate); +} + static BlockDriver bdrv_blkreplay = { .format_name = "blkreplay", .protocol_name = "blkreplay", @@ -150,6 +156,9 @@ static BlockDriver bdrv_blkreplay = { .bdrv_co_pwrite_zeroes = blkreplay_co_pwrite_zeroes, .bdrv_co_pdiscard = blkreplay_co_pdiscard, .bdrv_co_flush = blkreplay_co_flush, + + .is_filter = true, + .bdrv_recurse_is_first_non_filter = blkreplay_recurse_is_first_non_filter, }; static void bdrv_blkreplay_init(void)