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Thread-Topic: [PATCH] loop: Only change blocksize when needed. Thread-Index: AQHV9t4ymHRqJ4/teUKyMDsr4sOQ9A== Date: Tue, 10 Mar 2020 20:23:46 +0000 Message-ID: References: <20200310131230.106427-1-maco@android.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=Chaitanya.Kulkarni@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: 2be410b3-0094-4cf8-49e2-08d7c530ef86 x-ms-traffictypediagnostic: BYAPR04MB6120: x-microsoft-antispam-prvs: wdcipoutbound: EOP-TRUE x-ms-oob-tlc-oobclassifiers: OLM:3968; x-forefront-prvs: 033857D0BD x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(4636009)(346002)(376002)(366004)(136003)(39860400002)(396003)(199004)(189003)(55016002)(54906003)(4744005)(4326008)(52536014)(76116006)(66446008)(66476007)(66556008)(316002)(9686003)(64756008)(66946007)(478600001)(8936002)(71200400001)(110136005)(7696005)(2906002)(6506007)(53546011)(33656002)(8676002)(186003)(26005)(81156014)(86362001)(81166006)(5660300002);DIR:OUT;SFP:1102;SCL:1;SRVR:BYAPR04MB6120;H:BYAPR04MB5749.namprd04.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;A:1;MX:1; x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: IH7LxusKRNqyXHG0sd/l7Ow9FwsDg2Xj6qx/HwNEEAhrDxpUvMorv15uWakmYeLrE3MgZqLzBzNgs9sOjtf3g0jnXcj0qu1MiVeqliuJBmA3kgVy+sD9gQrJCa7PuGCl0g6FIbDJqHLoGcj5qOBra7N1JCHo+ut9ALnTOpqlXV7mX3iffOV0dEa68Bdu6YMhEdp4iFheJ75IcMFOQ/3p+9qll9LNP053TrhEdSfROm4T8FuG9qfAcK+vCO+A+K/YujV+lazxfXFgikAjWpNr0dewUXeXWeZdT5mcItYfbsw7LzRaHD38NIAAM27qlXhucaXhUvzyYfAhVqC8nmeaz4bBAAMkkVo54KhLQ9De5Iud/0NVXDpR2+pJQxzqrzGwyySlagGzuwAXjIsrjxqtwZxROp6ZmcKUIAXcwe6dvHSbSffKZCtnCZF90YqvrGyg x-ms-exchange-antispam-messagedata: i6QkPO+R3ctdlcAT3PY9abjhBLirqt7PhxZp9LBPQGVPib9SKg5FQU78hLLVbHRtP8KHJHqIGfNzGmYYpHXYjxoLb4rix5g2H+7+WTX6EVa5Rwx7c2/QHHJO38vN7hILEdoymUr9n+H8wDEU7mqS9A== 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: 2be410b3-0094-4cf8-49e2-08d7c530ef86 X-MS-Exchange-CrossTenant-originalarrivaltime: 10 Mar 2020 20:23:46.2562 (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: vx5FirXtyoc/iMG5nxLepQPjG9fMYW+rNOp/yanEOfc530U0KDabCVNzdgFvI+ZWP/4EnxMPhY6GStKwXbi/qK5x1rlurTNxlJXcDrnaOpw= X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR04MB6120 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Logically this is a right thing to do, but I wonder how much speedup=0A= you are getting with these improvements ?=0A= It will be great if you have some numbers so we all know the speedup.=0A= =0A= Irrespective of that, this looks good to me.=0A= =0A= Reviewed-by: Chaitanya Kulkarni =0A= =0A= On 03/10/2020 06:17 AM, Martijn Coenen wrote:=0A= > Return early in loop_set_block_size() if the requested block size is=0A= > identical to the one we already have; this avoids expensive calls to=0A= > freeze the block queue.=0A= >=0A= > Signed-off-by: Martijn Coenen=0A= =0A=