From patchwork Mon Nov 21 15:29:19 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vladimir Sementsov-Ogievskiy X-Patchwork-Id: 697290 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org 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 ozlabs.org (Postfix) with ESMTPS id 3tMt4H3lP3z9t0J for ; Tue, 22 Nov 2016 02:36:31 +1100 (AEDT) Received: from localhost ([::1]:50050 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c8qdx-0003On-BG for incoming@patchwork.ozlabs.org; Mon, 21 Nov 2016 10:36:29 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:50155) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c8qXP-0006D2-Ca for qemu-devel@nongnu.org; Mon, 21 Nov 2016 10:29:44 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1c8qXM-0003uu-5u for qemu-devel@nongnu.org; Mon, 21 Nov 2016 10:29:43 -0500 Received: from mailhub.sw.ru ([195.214.232.25]:20506 helo=relay.sw.ru) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1c8qXL-0003sY-Pa; Mon, 21 Nov 2016 10:29:40 -0500 Received: from kvm.qa.sw.ru. ([10.28.8.145]) by relay.sw.ru (8.13.4/8.13.4) with ESMTP id uALFTU9N013090; Mon, 21 Nov 2016 18:29:33 +0300 (MSK) From: Vladimir Sementsov-Ogievskiy To: qemu-block@nongnu.org, qemu-devel@nongnu.org Date: Mon, 21 Nov 2016 18:29:19 +0300 Message-Id: <1479742168-309848-9-git-send-email-vsementsov@virtuozzo.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1479742168-309848-1-git-send-email-vsementsov@virtuozzo.com> References: <1479742168-309848-1-git-send-email-vsementsov@virtuozzo.com> X-detected-operating-system: by eggs.gnu.org: OpenBSD 3.x [fuzzy] X-Received-From: 195.214.232.25 Subject: [Qemu-devel] [PATCH 08/17] block/dirty-bitmap: add bdrv_dirty_bitmap_release_successor 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, vsementsov@virtuozzo.com, famz@redhat.com, lirans@il.ibm.com, quintela@redhat.com, jsnow@redhat.com, armbru@redhat.com, mreitz@redhat.com, stefanha@redhat.com, den@openvz.org, amit.shah@redhat.com, pbonzini@redhat.com, dgilbert@redhat.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" To just release successor and unfreeze bitmap without any additional work. Signed-off-by: Vladimir Sementsov-Ogievskiy Signed-off-by: Denis V. Lunev --- block/dirty-bitmap.c | 10 ++++++++++ include/block/dirty-bitmap.h | 2 ++ 2 files changed, 12 insertions(+) diff --git a/block/dirty-bitmap.c b/block/dirty-bitmap.c index ab2c7f5..32aa6eb 100644 --- a/block/dirty-bitmap.c +++ b/block/dirty-bitmap.c @@ -274,6 +274,16 @@ BdrvDirtyBitmap *bdrv_reclaim_dirty_bitmap(BlockDriverState *bs, return parent; } +void bdrv_dirty_bitmap_release_successor(BlockDriverState *bs, + BdrvDirtyBitmap *parent) +{ + BdrvDirtyBitmap *successor = parent->successor; + + if (successor) { + bdrv_release_dirty_bitmap(bs, successor); + parent->successor = NULL; + } +} /** * Truncates _all_ bitmaps attached to a BDS. */ diff --git a/include/block/dirty-bitmap.h b/include/block/dirty-bitmap.h index 57b476c..20b3ec7 100644 --- a/include/block/dirty-bitmap.h +++ b/include/block/dirty-bitmap.h @@ -20,6 +20,8 @@ BdrvDirtyBitmap *bdrv_dirty_bitmap_abdicate(BlockDriverState *bs, BdrvDirtyBitmap *bdrv_reclaim_dirty_bitmap(BlockDriverState *bs, BdrvDirtyBitmap *bitmap, Error **errp); +void bdrv_dirty_bitmap_release_successor(BlockDriverState *bs, + BdrvDirtyBitmap *bitmap); void bdrv_dirty_bitmap_enable_successor(BdrvDirtyBitmap *bitmap); BdrvDirtyBitmap *bdrv_find_dirty_bitmap(BlockDriverState *bs, const char *name);