From nobody Wed Nov 5 09:53:51 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1499704811614834.5429845959408; Mon, 10 Jul 2017 09:40:11 -0700 (PDT) Received: from localhost ([::1]:41963 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dUbjE-00085S-72 for importer@patchew.org; Mon, 10 Jul 2017 12:40:08 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:47116) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dUba6-0000fO-2U for qemu-devel@nongnu.org; Mon, 10 Jul 2017 12:30:43 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dUba2-0001Nj-Sc for qemu-devel@nongnu.org; Mon, 10 Jul 2017 12:30:41 -0400 Received: from mailhub.sw.ru ([195.214.232.25]:31463 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 1dUba2-0001MA-6c; Mon, 10 Jul 2017 12:30:38 -0400 Received: from kvm.sw.ru (msk-vpn.virtuozzo.com [195.214.232.6]) by relay.sw.ru (8.13.4/8.13.4) with ESMTP id v6AGUTIj031112; Mon, 10 Jul 2017 19:30:32 +0300 (MSK) From: Vladimir Sementsov-Ogievskiy To: qemu-block@nongnu.org, qemu-devel@nongnu.org Date: Mon, 10 Jul 2017 19:30:20 +0300 Message-Id: <20170710163029.129912-8-vsementsov@virtuozzo.com> X-Mailer: git-send-email 2.11.1 In-Reply-To: <20170710163029.129912-1-vsementsov@virtuozzo.com> References: <20170710163029.129912-1-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 v7 07/16] 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+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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 | 13 +++++++++++++ include/block/dirty-bitmap.h | 2 ++ 2 files changed, 15 insertions(+) diff --git a/block/dirty-bitmap.c b/block/dirty-bitmap.c index 7b598c36bf..b5678d2d25 100644 --- a/block/dirty-bitmap.c +++ b/block/dirty-bitmap.c @@ -303,6 +303,19 @@ BdrvDirtyBitmap *bdrv_reclaim_dirty_bitmap(BlockDriver= State *bs, return parent; } =20 +/* Called with BQL taken. */ +void bdrv_dirty_bitmap_release_successor(BlockDriverState *bs, + BdrvDirtyBitmap *parent) +{ + qemu_mutex_lock(parent->mutex); + + if (parent->successor) { + bdrv_release_dirty_bitmap(bs, parent->successor); + parent->successor =3D NULL; + } + + qemu_mutex_unlock(parent->mutex); +} /** * Truncates _all_ bitmaps attached to a BDS. * Called with BQL taken. diff --git a/include/block/dirty-bitmap.h b/include/block/dirty-bitmap.h index d00a7a4b7c..fa2f670050 100644 --- a/include/block/dirty-bitmap.h +++ b/include/block/dirty-bitmap.h @@ -20,6 +20,8 @@ BdrvDirtyBitmap *bdrv_dirty_bitmap_abdicate(BlockDriverSt= ate *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); --=20 2.11.1