From patchwork Tue Feb 11 14:45:17 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Beno=C3=AEt_Canet?= X-Patchwork-Id: 319314 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 1434A2C00BA for ; Wed, 12 Feb 2014 01:49:27 +1100 (EST) Received: from localhost ([::1]:33992 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WDEeK-0006vB-Ls for incoming@patchwork.ozlabs.org; Tue, 11 Feb 2014 09:49:24 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:36049) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WDEad-0001ZZ-Ki for qemu-devel@nongnu.org; Tue, 11 Feb 2014 09:45:41 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WDEaT-00055M-CE for qemu-devel@nongnu.org; Tue, 11 Feb 2014 09:45:34 -0500 Received: from paradis.irqsave.net ([62.212.105.220]:49700) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WDEaS-00054T-Sv for qemu-devel@nongnu.org; Tue, 11 Feb 2014 09:45:25 -0500 Received: from localhost.localdomain (laure.irqsave.net [192.168.77.2]) by paradis.irqsave.net (Postfix) with ESMTP id CADC7618FF; Tue, 11 Feb 2014 16:22:36 +0100 (CET) From: =?UTF-8?q?Beno=C3=AEt=20Canet?= To: qemu-devel@nongnu.org Date: Tue, 11 Feb 2014 15:45:17 +0100 Message-Id: <1392129919-7764-11-git-send-email-benoit.canet@irqsave.net> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1392129919-7764-1-git-send-email-benoit.canet@irqsave.net> References: <1392129919-7764-1-git-send-email-benoit.canet@irqsave.net> MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 62.212.105.220 Cc: kwolf@redhat.com, famz@redhat.com, =?UTF-8?q?Beno=C3=AEt=20Canet?= , jcody@redhat.com, armbru@redhat.com, mreitz@redhat.com, stefanha@redhat.com Subject: [Qemu-devel] [PATCH V16 10/12] quorum: Implement recursive .bdrv_recurse_is_first_non_filter in quorum. 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Benoît Canet This is used to activate quorum snapshot. Signed-off-by: Benoit Canet Reviewed-by: Max Reitz --- block/quorum.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/block/quorum.c b/block/quorum.c index 9956081..90676dc 100644 --- a/block/quorum.c +++ b/block/quorum.c @@ -660,6 +660,23 @@ static coroutine_fn int quorum_co_flush(BlockDriverState *bs) return result; } +static bool quorum_recurse_is_first_non_filter(BlockDriverState *bs, + BlockDriverState *candidate) +{ + BDRVQuorumState *s = bs->opaque; + int i; + + for (i = 0; i < s->num_children; i++) { + bool perm = bdrv_recurse_is_first_non_filter(s->bs[i], + candidate); + if (perm) { + return true; + } + } + + return false; +} + static BlockDriver bdrv_quorum = { .format_name = "quorum", .protocol_name = "quorum", @@ -673,6 +690,8 @@ static BlockDriver bdrv_quorum = { .bdrv_aio_readv = quorum_aio_readv, .bdrv_aio_writev = quorum_aio_writev, .bdrv_invalidate_cache = quorum_invalidate_cache, + + .bdrv_recurse_is_first_non_filter = quorum_recurse_is_first_non_filter, }; static void bdrv_quorum_init(void)