From patchwork Tue Aug 16 10:26:05 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: 9283267 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 9FBD8607FD for ; Tue, 16 Aug 2016 10:43:22 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8FB2F285CC for ; Tue, 16 Aug 2016 10:43:22 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 841BC285CF; Tue, 16 Aug 2016 10:43:22 +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 15902285CC for ; Tue, 16 Aug 2016 10:43:22 +0000 (UTC) Received: from localhost ([::1]:41255 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bZbq5-0006zP-7S for patchwork-qemu-devel@patchwork.kernel.org; Tue, 16 Aug 2016 06:43:21 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:43045) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bZbZs-0000vB-RN for qemu-devel@nongnu.org; Tue, 16 Aug 2016 06:26:41 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bZbZo-0006LL-TB for qemu-devel@nongnu.org; Tue, 16 Aug 2016 06:26:36 -0400 Received: from mailhub.sw.ru ([195.214.232.25]:7276 helo=relay.sw.ru) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bZbZh-0006GM-NE; Tue, 16 Aug 2016 06:26:26 -0400 Received: from kvm.qa.sw.ru. ([10.28.8.145]) by relay.sw.ru (8.13.4/8.13.4) with ESMTP id u7G2W6ZX021884; Tue, 16 Aug 2016 05:32:09 +0300 (MSK) From: Vladimir Sementsov-Ogievskiy To: qemu-devel@nongnu.org, qemu-block@nongnu.org Date: Tue, 16 Aug 2016 13:26:05 +0300 Message-Id: <1471343175-14945-9-git-send-email-vsementsov@virtuozzo.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1471343175-14945-1-git-send-email-vsementsov@virtuozzo.com> References: <1471343175-14945-1-git-send-email-vsementsov@virtuozzo.com> X-detected-operating-system: by eggs.gnu.org: OpenBSD 3.x X-Received-From: 195.214.232.25 Subject: [Qemu-devel] [PATCH 08/18] 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+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP 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);