From patchwork Mon Sep 26 08:08:43 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pavel Dovgalyuk X-Patchwork-Id: 9350283 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 756F3601C2 for ; Mon, 26 Sep 2016 08:18:35 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5F5A428A76 for ; Mon, 26 Sep 2016 08:18:35 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5416F28AA7; Mon, 26 Sep 2016 08:18:35 +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 E150028A76 for ; Mon, 26 Sep 2016 08:18:34 +0000 (UTC) Received: from localhost ([::1]:42144 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1boR7R-0003S9-Jl for patchwork-qemu-devel@patchwork.kernel.org; Mon, 26 Sep 2016 04:18:33 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:41242) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1boQy9-000305-R8 for qemu-devel@nongnu.org; Mon, 26 Sep 2016 04:09:01 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1boQy7-0005Tp-PA for qemu-devel@nongnu.org; Mon, 26 Sep 2016 04:08:56 -0400 Received: from mail.ispras.ru ([83.149.199.45]:49634) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1boQy7-0005S0-HJ for qemu-devel@nongnu.org; Mon, 26 Sep 2016 04:08:55 -0400 Received: from [10.10.150.114] (unknown [85.142.117.224]) by mail.ispras.ru (Postfix) with ESMTPSA id 074DC540095; Mon, 26 Sep 2016 11:08:44 +0300 (MSK) To: qemu-devel@nongnu.org From: Pavel Dovgalyuk Date: Mon, 26 Sep 2016 11:08:43 +0300 Message-ID: <20160926080843.6992.73478.stgit@PASHA-ISP> In-Reply-To: <20160926080757.6992.74311.stgit@PASHA-ISP> References: <20160926080757.6992.74311.stgit@PASHA-ISP> 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 v5 8/9] 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: kwolf@redhat.com, peter.maydell@linaro.org, mst@redhat.com, jasowang@redhat.com, quintela@redhat.com, pbonzini@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 a741654..5a13fb3 100644 --- a/block/blkreplay.c +++ b/block/blkreplay.c @@ -130,6 +130,12 @@ 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", @@ -145,6 +151,9 @@ 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)