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Wed, 13 Jan 2021 05:03:05 +0000 From: Chaitanya Kulkarni To: Christoph Hellwig CC: "linux-block@vger.kernel.org" , "linux-nvme@lists.infradead.org" , "sagi@grimberg.me" , Damien Le Moal Subject: Re: [PATCH V9 5/9] nvmet: add bio get helper for different backends Thread-Topic: [PATCH V9 5/9] nvmet: add bio get helper for different backends Thread-Index: AQHW6Js5srDvdWB7Nk6D2IdsRVTi3A== Date: Wed, 13 Jan 2021 05:03:05 +0000 Message-ID: References: <20210112042623.6316-1-chaitanya.kulkarni@wdc.com> <20210112042623.6316-6-chaitanya.kulkarni@wdc.com> <20210112073315.GA24288@lst.de> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: lst.de; dkim=none (message not signed) header.d=none;lst.de; dmarc=none action=none header.from=wdc.com; x-originating-ip: [199.255.45.62] x-ms-publictraffictype: Email x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: b055b839-5802-488d-24b6-08d8b78082d1 x-ms-traffictypediagnostic: BYAPR04MB5333: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: wdcipoutbound: EOP-TRUE x-ms-oob-tlc-oobclassifiers: OLM:8882; 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: wdc.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: BYAPR04MB4965.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: b055b839-5802-488d-24b6-08d8b78082d1 X-MS-Exchange-CrossTenant-originalarrivaltime: 13 Jan 2021 05:03:05.0243 (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: Dr5Rzx3+7X3X/+bDszliCIPH2OX+HyYe65eoqBEu7ZMkUmShAN1Ra++szVXQy39IzABienBtnBHEddA27x7b5fcsCYr8fbwSC+Zz91k4bIg= X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR04MB5333 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On 1/11/21 23:33, Christoph Hellwig wrote:=0A= > I'm not a huge fan of this helper, especially as it sets an end_io=0A= > callback only for the allocated case, which is a weird calling=0A= > convention.=0A= >=0A= =0A= The patch has a right documentation and that end_io is needed=0A= for passthru case. To get rid of the weirdness I can remove=0A= passthru case and make itend_io assign to inline and non-inline bio=0A= to make it non-weired.=0A= =0A= Since this eliminates exactly identical lines of the code in atleast two=0A= backend which we should try to use the helper in non-wried way.=0A= =0A=