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dkim=none (message not signed) header.d=none;nongnu.org; dmarc=none action=none header.from=virtuozzo.com; From: Vladimir Sementsov-Ogievskiy To: qemu-block@nongnu.org Cc: qemu-devel@nongnu.org, armbru@redhat.com, jsnow@redhat.com, mreitz@redhat.com, kwolf@redhat.com, vsementsov@virtuozzo.com, den@openvz.org Subject: [PATCH 12/21] block: return value from bdrv_replace_node() Date: Mon, 23 Nov 2020 23:12:24 +0300 Message-Id: <20201123201233.9534-15-vsementsov@virtuozzo.com> X-Mailer: git-send-email 2.21.3 In-Reply-To: <20201123201233.9534-1-vsementsov@virtuozzo.com> References: <20201123201233.9534-1-vsementsov@virtuozzo.com> Content-Transfer-Encoding: quoted-printable X-Originating-IP: [185.215.60.115] X-ClientProxiedBy: AM0PR10CA0117.EURPRD10.PROD.OUTLOOK.COM (2603:10a6:208:e6::34) To AM7PR08MB5494.eurprd08.prod.outlook.com (2603:10a6:20b:dc::15) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 568518ab-658b-4781-3200-08d88fec2db3 X-MS-TrafficTypeDiagnostic: AM6PR08MB4690: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:883; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=40.107.22.111; envelope-from=vsementsov@virtuozzo.com; helo=EUR05-AM6-obe.outbound.protection.outlook.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, MSGID_FROM_MTA_HEADER=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @virtuozzo.com) Content-Type: text/plain; charset="utf-8" Functions with errp argument are not recommened to be void-functions. Improve bdrv_replace_node(). Signed-off-by: Vladimir Sementsov-Ogievskiy --- include/block/block.h | 4 ++-- block.c | 14 ++++++++------ 2 files changed, 10 insertions(+), 8 deletions(-) diff --git a/include/block/block.h b/include/block/block.h index db37a35cee..ab812e14d8 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -346,8 +346,8 @@ int bdrv_create_file(const char *filename, QemuOpts *op= ts, Error **errp); BlockDriverState *bdrv_new(void); void bdrv_append(BlockDriverState *bs_new, BlockDriverState *bs_top, Error **errp); -void bdrv_replace_node(BlockDriverState *from, BlockDriverState *to, - Error **errp); +int bdrv_replace_node(BlockDriverState *from, BlockDriverState *to, + Error **errp); =20 int bdrv_parse_aio(const char *mode, int *flags); int bdrv_parse_cache_mode(const char *mode, int *flags, bool *writethrough= ); diff --git a/block.c b/block.c index 1b10b6fb5e..5c94f5a428 100644 --- a/block.c +++ b/block.c @@ -4781,14 +4781,14 @@ static bool should_update_child(BdrvChild *c, Block= DriverState *to) * With auto_skip=3Dfalse the error is returned if from has a parent which= should * not be updated. */ -static void bdrv_replace_node_common(BlockDriverState *from, - BlockDriverState *to, - bool auto_skip, Error **errp) +static int bdrv_replace_node_common(BlockDriverState *from, + BlockDriverState *to, + bool auto_skip, Error **errp) { + int ret =3D -EPERM; BdrvChild *c, *next; GSList *list =3D NULL, *p; uint64_t perm =3D 0, shared =3D BLK_PERM_ALL; - int ret; =20 /* Make sure that @from doesn't go away until we have successfully att= ached * all of its parents to @to. */ @@ -4844,10 +4844,12 @@ out: g_slist_free(list); bdrv_drained_end(from); bdrv_unref(from); + + return ret; } =20 -void bdrv_replace_node(BlockDriverState *from, BlockDriverState *to, - Error **errp) +int bdrv_replace_node(BlockDriverState *from, BlockDriverState *to, + Error **errp) { return bdrv_replace_node_common(from, to, true, errp); } --=20 2.21.3