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Fri, 8 May 2020 13:50:52 +0000 From: Johannes Thumshirn To: David Sterba , "linux-btrfs@vger.kernel.org" Subject: Re: [PATCH 10/19] btrfs: speed up btrfs_set_token_##bits helpers Thread-Topic: [PATCH 10/19] btrfs: speed up btrfs_set_token_##bits helpers Thread-Index: AQHWJK0MBzIYNsnT/kqSqfGLn8InRw== Date: Fri, 8 May 2020 13:50:52 +0000 Message-ID: References: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: suse.com; dkim=none (message not signed) header.d=none;suse.com; dmarc=none action=none header.from=wdc.com; x-originating-ip: [129.253.240.72] x-ms-publictraffictype: Email x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: 5d0ef786-4e2f-4914-f9b5-08d7f356d29d x-ms-traffictypediagnostic: SN4PR0401MB3677: x-microsoft-antispam-prvs: wdcipoutbound: EOP-TRUE x-ms-oob-tlc-oobclassifiers: OLM:4125; x-forefront-prvs: 039735BC4E x-ms-exchange-senderadcheck: 1 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:SN4PR0401MB3598.namprd04.prod.outlook.com;PTR:;CAT:NONE;SFTY:;SFS:(4636009)(376002)(136003)(39860400002)(346002)(396003)(366004)(33430700001)(26005)(8676002)(5660300002)(53546011)(6506007)(33656002)(55016002)(9686003)(110136005)(7696005)(86362001)(558084003)(478600001)(52536014)(66946007)(71200400001)(76116006)(91956017)(83290400001)(33440700001)(2906002)(83300400001)(83280400001)(83310400001)(83320400001)(316002)(186003)(66446008)(66556008)(64756008)(66476007)(8936002);DIR:OUT;SFP:1102; x-ms-exchange-antispam-messagedata: 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 x-ms-exchange-transport-forked: True Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: wdc.com X-MS-Exchange-CrossTenant-Network-Message-Id: 5d0ef786-4e2f-4914-f9b5-08d7f356d29d X-MS-Exchange-CrossTenant-originalarrivaltime: 08 May 2020 13:50:52.1650 (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: 663+oiBclVElG4D6PUDP26tpOSTSZrJxOyw8vXRATj6Q4C2E+UWAgfaUpsd63tWhG2V/v7ht9S8q5OoaIJVw4S4+TivsTv0CrDXcPD7X+n8= X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN4PR0401MB3677 Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On 07/05/2020 22:21, David Sterba wrote:=0A= > This is all wasteful. We know the number of bytes to read, 1/2/4/8 and=0A= =0A= Same question, s/read/write/?=0A= =0A= Otherwise,=0A= Reviewed-by: Johannes Thumshirn =0A=