Message ID | 20210422163046.442932-4-vsementsov@virtuozzo.com |
---|---|
State | New |
Headers | show
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dkim=none (message not signed) header.d=none;nongnu.org; dmarc=none action=none header.from=virtuozzo.com; Received: from AM7PR08MB5494.eurprd08.prod.outlook.com (2603:10a6:20b:dc::15) by AM6PR08MB3861.eurprd08.prod.outlook.com (2603:10a6:20b:80::30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4065.21; Thu, 22 Apr 2021 16:31:04 +0000 Received: from AM7PR08MB5494.eurprd08.prod.outlook.com ([fe80::b403:c1a9:6bb7:133]) by AM7PR08MB5494.eurprd08.prod.outlook.com ([fe80::b403:c1a9:6bb7:133%7]) with mapi id 15.20.4065.021; Thu, 22 Apr 2021 16:31:04 +0000 From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> To: qemu-block@nongnu.org Cc: qemu-devel@nongnu.org, mreitz@redhat.com, kwolf@redhat.com, vsementsov@virtuozzo.com, den@openvz.org Subject: [PATCH v6 03/12] block/qcow2-cluster: assert no data_file on compressed write path Date: Thu, 22 Apr 2021 19:30:37 +0300 Message-Id: <20210422163046.442932-4-vsementsov@virtuozzo.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210422163046.442932-1-vsementsov@virtuozzo.com> References: <20210422163046.442932-1-vsementsov@virtuozzo.com> Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [185.215.60.222] X-ClientProxiedBy: HE1PR0501CA0006.eurprd05.prod.outlook.com (2603:10a6:3:1a::16) To AM7PR08MB5494.eurprd08.prod.outlook.com (2603:10a6:20b:dc::15) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from localhost.localdomain (185.215.60.222) by HE1PR0501CA0006.eurprd05.prod.outlook.com (2603:10a6:3:1a::16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4042.16 via Frontend Transport; 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Series |
qcow2: fix parallel rewrite and discard (lockless)
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expand
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diff --git a/block/qcow2-cluster.c b/block/qcow2-cluster.c index bd0597842f..6105d4e7e0 100644 --- a/block/qcow2-cluster.c +++ b/block/qcow2-cluster.c @@ -821,9 +821,7 @@ int qcow2_alloc_compressed_cluster_offset(BlockDriverState *bs, int64_t cluster_offset; int nb_csectors; - if (has_data_file(bs)) { - return 0; - } + assert(!has_data_file(bs)); ret = get_cluster_table(bs, offset, &l2_slice, &l2_index); if (ret < 0) {
First, we return 0 here, but it's not a success, we didn't set host_offset out parameter. Next, it can't happen, as has_data_file() is checked in qcow2_co_pwritev_compressed_part(). So, let's just assert it. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> --- block/qcow2-cluster.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)