From nobody Sat Oct 25 21:46:12 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; 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 1521450288008476.5675692689259; Mon, 19 Mar 2018 02:04:48 -0700 (PDT) Received: from localhost ([::1]:40878 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1exqii-0001D7-96 for importer@patchew.org; Mon, 19 Mar 2018 05:04:44 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:52561) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1exqgY-0008L4-1P for qemu-devel@nongnu.org; Mon, 19 Mar 2018 05:02:35 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1exqgU-0007Ln-R1 for qemu-devel@nongnu.org; Mon, 19 Mar 2018 05:02:30 -0400 Received: from relay.sw.ru ([185.231.240.75]:55690) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1exqgU-0007LK-Jp; Mon, 19 Mar 2018 05:02:26 -0400 Received: from msk-vpn.virtuozzo.com ([195.214.232.6] helo=kvm.sw.ru) by relay.sw.ru with esmtp (Exim 4.90_1) (envelope-from ) id 1exqgR-0002dG-Px; Mon, 19 Mar 2018 12:02:24 +0300 From: Vladimir Sementsov-Ogievskiy To: qemu-devel@nongnu.org, qemu-block@nongnu.org Date: Mon, 19 Mar 2018 12:02:21 +0300 Message-Id: <20180319090223.23336-2-vsementsov@virtuozzo.com> X-Mailer: git-send-email 2.11.1 In-Reply-To: <20180319090223.23336-1-vsementsov@virtuozzo.com> References: <20180319090223.23336-1-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 v3 1/3] qcow2-bitmap: add qcow2_reopen_bitmaps_rw_hint() 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, den@openvz.org, vsementsov@virtuozzo.com, jsnow@redhat.com, mreitz@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" Add version of qcow2_reopen_bitmaps_rw, which do the same work but also return a hint about was header updated or not. This will be used in the following fix for bitmaps reloading after migration. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: John Snow Reviewed-by: Max Reitz --- block/qcow2.h | 2 ++ block/qcow2-bitmap.c | 15 ++++++++++++++- 2 files changed, 16 insertions(+), 1 deletion(-) diff --git a/block/qcow2.h b/block/qcow2.h index ccb92a9696..d301f77cea 100644 --- a/block/qcow2.h +++ b/block/qcow2.h @@ -671,6 +671,8 @@ int qcow2_check_bitmaps_refcounts(BlockDriverState *bs,= BdrvCheckResult *res, void **refcount_table, int64_t *refcount_table_size); bool qcow2_load_dirty_bitmaps(BlockDriverState *bs, Error **errp); +int qcow2_reopen_bitmaps_rw_hint(BlockDriverState *bs, bool *header_update= d, + Error **errp); int qcow2_reopen_bitmaps_rw(BlockDriverState *bs, Error **errp); void qcow2_store_persistent_dirty_bitmaps(BlockDriverState *bs, Error **er= rp); int qcow2_reopen_bitmaps_ro(BlockDriverState *bs, Error **errp); diff --git a/block/qcow2-bitmap.c b/block/qcow2-bitmap.c index 3010adb909..6e93ec43e1 100644 --- a/block/qcow2-bitmap.c +++ b/block/qcow2-bitmap.c @@ -1004,7 +1004,8 @@ fail: return false; } =20 -int qcow2_reopen_bitmaps_rw(BlockDriverState *bs, Error **errp) +int qcow2_reopen_bitmaps_rw_hint(BlockDriverState *bs, bool *header_update= d, + Error **errp) { BDRVQcow2State *s =3D bs->opaque; Qcow2BitmapList *bm_list; @@ -1012,6 +1013,10 @@ int qcow2_reopen_bitmaps_rw(BlockDriverState *bs, Er= ror **errp) GSList *ro_dirty_bitmaps =3D NULL; int ret =3D 0; =20 + if (header_updated !=3D NULL) { + *header_updated =3D false; + } + if (s->nb_bitmaps =3D=3D 0) { /* No bitmaps - nothing to do */ return 0; @@ -1055,6 +1060,9 @@ int qcow2_reopen_bitmaps_rw(BlockDriverState *bs, Err= or **errp) error_setg_errno(errp, -ret, "Can't update bitmap directory"); goto out; } + if (header_updated !=3D NULL) { + *header_updated =3D true; + } g_slist_foreach(ro_dirty_bitmaps, set_readonly_helper, false); } =20 @@ -1065,6 +1073,11 @@ out: return ret; } =20 +int qcow2_reopen_bitmaps_rw(BlockDriverState *bs, Error **errp) +{ + return qcow2_reopen_bitmaps_rw_hint(bs, NULL, errp); +} + /* store_bitmap_data() * Store bitmap to image, filling bitmap table accordingly. */ --=20 2.11.1