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Petersen" , Damien Le Moal , Dmitry Fomichev Subject: Re: [PATCH 0/2] scsi: sd: use READ/WRITE/SYNC (16) commands per ZBC Thread-Topic: [PATCH 0/2] scsi: sd: use READ/WRITE/SYNC (16) commands per ZBC Thread-Index: AQHY8+dTcwmfg7ex7ESXffXNxEBulq42iAgAgADmEoA= Date: Thu, 10 Nov 2022 02:20:09 +0000 Message-ID: <20221110022009.xdfmlpdpw2kyu32x@shindev> References: <20221109025941.1594612-1-shinichiro.kawasaki@wdc.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=wdc.com; x-ms-publictraffictype: Email x-ms-traffictypediagnostic: DM8PR04MB8037:EE_|MWHPR04MB1214:EE_ x-ms-office365-filtering-correlation-id: a76c01c9-4a49-40e0-5efc-08dac2c21779 x-ld-processed: b61c8803-16f3-4c35-9b17-6f65f441df86,ExtAddr wdcipoutbound: EOP-TRUE x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: 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 x-forefront-antispam-report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:DM8PR04MB8037.namprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230022)(4636009)(7916004)(346002)(396003)(376002)(39860400002)(136003)(366004)(451199015)(44832011)(86362001)(41300700001)(8936002)(2906002)(4744005)(4326008)(8676002)(5660300002)(66476007)(6486002)(64756008)(122000001)(1076003)(38100700002)(91956017)(66446008)(6506007)(71200400001)(6916009)(9686003)(66946007)(66556008)(76116006)(38070700005)(54906003)(316002)(26005)(6512007)(478600001)(82960400001)(186003)(33716001);DIR:OUT;SFP:1102; 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charset="us-ascii" Content-ID: <668B13E5A023314C9A447403CBA4AFBB@namprd04.prod.outlook.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: wdc.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: DM8PR04MB8037.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: a76c01c9-4a49-40e0-5efc-08dac2c21779 X-MS-Exchange-CrossTenant-originalarrivaltime: 10 Nov 2022 02:20:09.9464 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: b61c8803-16f3-4c35-9b17-6f65f441df86 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: eNCywfuRmakSr1eU2bJ5Up4bwm5rAn/PWYylJPbcUY2Te6R0F0KokZ40fHx0MkgWMF38oZbMcwVugwZEGqpgphNoy+M/un8vLPusMS8E1Ok= X-MS-Exchange-Transport-CrossTenantHeadersStamped: MWHPR04MB1214 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org On Nov 09, 2022 / 04:36, Christoph Hellwig wrote: > What is the point in relaxing this? Every modern device better support > 16 byte commands even if they aren't strictly required for host aware > devices. My point was to make the check strictly follow the ZBC spec. But now I see = that it's the better to keep enforcing 16 byte commands to host-aware devices. I= will drop the first patch and revise the second patch to enforce SYNC 16 on both host-aware and host-managed devices. --=20 Shin'ichiro Kawasaki=