From nobody Sun Feb 8 18:29:34 2026 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; dmarc=fail(p=none dis=none) header.from=virtuozzo.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1520965012335786.8665672542328; Tue, 13 Mar 2018 11:16:52 -0700 (PDT) Received: from localhost ([::1]:41813 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1evoTj-000482-DR for importer@patchew.org; Tue, 13 Mar 2018 14:16:51 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:36524) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1evoGs-0000pc-CC for qemu-devel@nongnu.org; Tue, 13 Mar 2018 14:03:38 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1evoGr-00087S-Fd for qemu-devel@nongnu.org; Tue, 13 Mar 2018 14:03:34 -0400 Received: from relay.sw.ru ([185.231.240.75]:37658) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1evoGk-0007zo-6c; Tue, 13 Mar 2018 14:03:26 -0400 Received: from msk-vpn.virtuozzo.com ([195.214.232.6] helo=kvm.sw.ru) by relay.sw.ru with esmtp (Exim 4.89) (envelope-from ) id 1evoGg-0002JZ-62; Tue, 13 Mar 2018 21:03:22 +0300 From: Vladimir Sementsov-Ogievskiy To: qemu-block@nongnu.org, qemu-devel@nongnu.org Date: Tue, 13 Mar 2018 21:03:08 +0300 Message-Id: <20180313180320.339796-2-vsementsov@virtuozzo.com> X-Mailer: git-send-email 2.11.1 In-Reply-To: <20180313180320.339796-1-vsementsov@virtuozzo.com> References: <20180313180320.339796-1-vsementsov@virtuozzo.com> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [fuzzy] X-Received-From: 185.231.240.75 Subject: [Qemu-devel] [PATCH v11 01/13] block/dirty-bitmap: add bdrv_dirty_bitmap_enable_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" Enabling bitmap successor is necessary to enable successors of bitmaps being migrated before target vm start. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: John Snow Reviewed-by: Fam Zheng Message-id: 20180207155837.92351-2-vsementsov@virtuozzo.com Signed-off-by: John Snow --- include/block/dirty-bitmap.h | 1 + block/dirty-bitmap.c | 8 ++++++++ 2 files changed, 9 insertions(+) diff --git a/include/block/dirty-bitmap.h b/include/block/dirty-bitmap.h index 09efec609f..e0ebc96b01 100644 --- a/include/block/dirty-bitmap.h +++ b/include/block/dirty-bitmap.h @@ -21,6 +21,7 @@ BdrvDirtyBitmap *bdrv_dirty_bitmap_abdicate(BlockDriverSt= ate *bs, BdrvDirtyBitmap *bdrv_reclaim_dirty_bitmap(BlockDriverState *bs, BdrvDirtyBitmap *bitmap, Error **errp); +void bdrv_dirty_bitmap_enable_successor(BdrvDirtyBitmap *bitmap); BdrvDirtyBitmap *bdrv_find_dirty_bitmap(BlockDriverState *bs, const char *name); void bdrv_dirty_bitmap_make_anon(BdrvDirtyBitmap *bitmap); diff --git a/block/dirty-bitmap.c b/block/dirty-bitmap.c index 909f0517f8..0d0e807216 100644 --- a/block/dirty-bitmap.c +++ b/block/dirty-bitmap.c @@ -234,6 +234,14 @@ int bdrv_dirty_bitmap_create_successor(BlockDriverStat= e *bs, return 0; } =20 +/* Called with BQL taken. */ +void bdrv_dirty_bitmap_enable_successor(BdrvDirtyBitmap *bitmap) +{ + qemu_mutex_lock(bitmap->mutex); + bdrv_enable_dirty_bitmap(bitmap->successor); + qemu_mutex_unlock(bitmap->mutex); +} + /** * For a bitmap with a successor, yield our name to the successor, * delete the old bitmap, and return a handle to the new bitmap. --=20 2.11.1