| Message ID | 20200611162655.4538-1-vsementsov@virtuozzo.com |
|---|---|
| Headers | show
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Thu, 11 Jun 2020 16:27:11 +0000 From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> To: qemu-block@nongnu.org Subject: [PATCH v4 0/4] nbd: reduce max_block restrictions Date: Thu, 11 Jun 2020 19:26:51 +0300 Message-Id: <20200611162655.4538-1-vsementsov@virtuozzo.com> X-Mailer: git-send-email 2.21.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: AM3PR05CA0148.eurprd05.prod.outlook.com (2603:10a6:207:3::26) To AM7PR08MB5494.eurprd08.prod.outlook.com (2603:10a6:20b:dc::15) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from kvm.sw.ru (185.215.60.159) by AM3PR05CA0148.eurprd05.prod.outlook.com (2603:10a6:207:3::26) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3088.18 via Frontend Transport; Thu, 11 Jun 2020 16:27:10 +0000 X-Mailer: git-send-email 2.21.0 X-Originating-IP: [185.215.60.159] X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: dbf78df3-f4b4-4210-ac79-08d80e244ace X-MS-TrafficTypeDiagnostic: AM7PR08MB5493: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: <AM7PR08MB5493BA040B7E83A8A5FB696BC1800@AM7PR08MB5493.eurprd08.prod.outlook.com> X-MS-Oob-TLC-OOBClassifiers: OLM:229; 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nbd: reduce max_block restrictions
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expand
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Recent changes in NBD protocol allowed to use some commands without max_block restriction. Let's drop the restrictions. NBD change is here: https://github.com/NetworkBlockDevice/nbd/commit/9f30fedb8699f151e7ef4ccc07e624330be3316b#diff-762fb7c670348da69cc9050ef58fe3ae v4: fix auto_no_fallback variable usage in 04: - initialize it - unset it on error Hope, it will fix bug reported by patchew Vladimir Sementsov-Ogievskiy (4): block: add max_pwrite_zeroes_fast to BlockLimits block/nbd: define new max_write_zero_fast limit block/io: refactor bdrv_co_do_pwrite_zeroes head calculation block/io: auto-no-fallback for write-zeroes include/block/block_int.h | 8 ++++++++ block/io.c | 40 +++++++++++++++++++++++++++++++++------ block/nbd.c | 1 + 3 files changed, 43 insertions(+), 6 deletions(-)