From nobody Tue Jul 15 05:31:10 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.zoho.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 1486042691348932.4117426657825; Thu, 2 Feb 2017 05:38:11 -0800 (PST) Received: from localhost ([::1]:56606 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cZHaP-0000uW-UQ for importer@patchew.org; Thu, 02 Feb 2017 08:38:06 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46236) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cZHKm-0002cQ-F4 for qemu-devel@nongnu.org; Thu, 02 Feb 2017 08:21:58 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cZHKk-0008JT-5M for qemu-devel@nongnu.org; Thu, 02 Feb 2017 08:21:56 -0500 Received: from mailhub.sw.ru ([195.214.232.25]:26609 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 1cZHKj-0008GR-In for qemu-devel@nongnu.org; Thu, 02 Feb 2017 08:21:54 -0500 Received: from kvm.qa.sw.ru. (msk-vpn.virtuozzo.com [195.214.232.6]) by relay.sw.ru (8.13.4/8.13.4) with ESMTP id v12DLkKw005095; Thu, 2 Feb 2017 16:21:47 +0300 (MSK) From: Vladimir Sementsov-Ogievskiy To: qemu-block@nongnu.org, qemu-devel@nongnu.org Date: Thu, 2 Feb 2017 16:21:44 +0300 Message-Id: <20170202132145.168790-24-vsementsov@virtuozzo.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170202132145.168790-1-vsementsov@virtuozzo.com> References: <20170202132145.168790-1-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 23/24] qcow2: add .bdrv_remove_persistent_dirty_bitmap 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, vsementsov@virtuozzo.com, famz@redhat.com, armbru@redhat.com, mreitz@redhat.com, stefanha@redhat.com, pbonzini@redhat.com, den@openvz.org, jsnow@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" Realize .bdrv_remove_persistent_dirty_bitmap interface. Signed-off-by: Vladimir Sementsov-Ogievskiy --- block/qcow2-bitmap.c | 41 +++++++++++++++++++++++++++++++++++++++++ block/qcow2.c | 1 + block/qcow2.h | 3 +++ 3 files changed, 45 insertions(+) diff --git a/block/qcow2-bitmap.c b/block/qcow2-bitmap.c index 8bb7f3e621..eafac039bd 100644 --- a/block/qcow2-bitmap.c +++ b/block/qcow2-bitmap.c @@ -1064,6 +1064,47 @@ static Qcow2Bitmap *find_bitmap_by_name(Qcow2BitmapL= ist *bm_list, return NULL; } =20 +void qcow2_remove_persistent_dirty_bitmap(BlockDriverState *bs, + const char *name, + Error **errp) +{ + int ret; + BDRVQcow2State *s =3D bs->opaque; + Qcow2Bitmap *bm; + Qcow2BitmapList *bm_list; + + if (s->nb_bitmaps =3D=3D 0) { + /* Absence of the bitmap is not an error: see explanation above + * bdrv_remove_persistent_dirty_bitmap() definition. */ + return; + } + + bm_list =3D bitmap_list_load(bs, s->bitmap_directory_offset, + s->bitmap_directory_size, errp); + if (bm_list =3D=3D NULL) { + return; + } + + bm =3D find_bitmap_by_name(bm_list, name); + if (bm =3D=3D NULL) { + goto fail; + } + + QSIMPLEQ_REMOVE(bm_list, bm, Qcow2Bitmap, entry); + + ret =3D update_ext_header_and_dir(bs, bm_list); + if (ret < 0) { + error_setg_errno(errp, -ret, "Failed to update bitmap extension"); + goto fail; + } + + free_bitmap_clusters(bs, &bm->table); + +fail: + bitmap_free(bm); + bitmap_list_free(bm_list); +} + void qcow2_store_persistent_dirty_bitmaps(BlockDriverState *bs, Error **er= rp) { BdrvDirtyBitmap *bitmap; diff --git a/block/qcow2.c b/block/qcow2.c index 166a43bd05..9d3a2f4879 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -3544,6 +3544,7 @@ BlockDriver bdrv_qcow2 =3D { .bdrv_load_autoloading_dirty_bitmaps =3D qcow2_load_autoloading_dirty_= bitmaps, .bdrv_store_persistent_dirty_bitmaps =3D qcow2_store_persistent_dirty_= bitmaps, .bdrv_can_store_new_dirty_bitmap =3D qcow2_can_store_new_dirty_bitmap, + .bdrv_remove_persistent_dirty_bitmap =3D qcow2_remove_persistent_dirty= _bitmap, }; =20 static void bdrv_qcow2_init(void) diff --git a/block/qcow2.h b/block/qcow2.h index eaad34a527..a009827f60 100644 --- a/block/qcow2.h +++ b/block/qcow2.h @@ -627,5 +627,8 @@ bool qcow2_can_store_new_dirty_bitmap(BlockDriverState = *bs, int qcow2_check_bitmaps_refcounts(BlockDriverState *bs, BdrvCheckResult *r= es, void **refcount_table, int64_t *refcount_table_size); +void qcow2_remove_persistent_dirty_bitmap(BlockDriverState *bs, + const char *name, + Error **errp); =20 #endif --=20 2.11.0