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Harding" CC: Andrew Morton , Matthew Wilcox , Alexander Viro , "Christoph Hellwig" , Pekka Enberg , "David Rientjes" , Joonsoo Kim , Christopher Lameter , Miklos Szeredi , Andreas Dilger , Waiman Long , "Tycho Andersen" , Theodore Ts'o , Andi Kleen , David Chinner , Nick Piggin , Rik van Riel , Hugh Dickins , Jonathan Corbet , "linux-mm@kvack.org" , "linux-fsdevel@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: Re: [RFC PATCH v5 03/16] slub: Sort slab cache list Thread-Topic: [RFC PATCH v5 03/16] slub: Sort slab cache list Thread-Index: AQHVDs62IV4Zydo66E+iHqIO5Pdo5qZ0vW8A Date: Tue, 21 May 2019 00:38:40 +0000 Message-ID: <20190521003835.GB21811@tower.DHCP.thefacebook.com> References: <20190520054017.32299-1-tobin@kernel.org> <20190520054017.32299-4-tobin@kernel.org> In-Reply-To: <20190520054017.32299-4-tobin@kernel.org> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: MWHPR14CA0005.namprd14.prod.outlook.com (2603:10b6:300:ae::15) To BYAPR15MB2631.namprd15.prod.outlook.com (2603:10b6:a03:152::24) x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [2620:10d:c090:200::3:a985] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 70c0967b-98c8-44cd-25cf-08d6dd84ab7c x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600141)(711020)(4605104)(2017052603328)(7193020);SRVR:BYAPR15MB3030; x-ms-traffictypediagnostic: BYAPR15MB3030: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:2887; x-forefront-prvs: 0044C17179 x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(366004)(136003)(39860400002)(376002)(346002)(396003)(199004)(189003)(6116002)(7736002)(8676002)(81166006)(81156014)(4326008)(66946007)(73956011)(64756008)(186003)(66476007)(66556008)(68736007)(66446008)(6436002)(53936002)(9686003)(6486002)(6246003)(99286004)(6512007)(7416002)(305945005)(446003)(316002)(6916009)(8936002)(46003)(102836004)(229853002)(76176011)(54906003)(52116002)(486006)(25786009)(476003)(2906002)(11346002)(33656002)(386003)(6506007)(14454004)(256004)(71200400001)(86362001)(71190400001)(478600001)(1076003)(5660300002)(4744005);DIR:OUT;SFP:1102;SCL:1;SRVR:BYAPR15MB3030;H:BYAPR15MB2631.namprd15.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;A:1;MX:1; received-spf: None (protection.outlook.com: fb.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: 4s+SYJPSmiJ7nXYS5W4A3hnVp7aVbFPYyJbjP1TFSqIoKDGJQgHciWYFBrFvNzAUgySmic9Mv2MTMg0OLmiX8cNilaXRRmzYCnc09FqqhZH+ONyDzTSHnsjRoDkYirOUepqEdIGj2LmxYw6ngRqMU8nH6nV+luREC7o55arAdrMnqG5QLm7/9OGXX/EMqcV6HV+QJons4uiGp9Vgm+7BIH7jvfV9svnHD3bmg1dwTTuQhnxstF+YXvzEnJ8lFuNzLnzh4+M8elynSCGoHe7t43wRrnahpsL+ctMjIr4uTDaHWLA/lrvLJmG2cjkLq+8V1CSAgpl/bhj4ldGgsDe5eEItXoM+fWIlIPxws27p7q6ryj9Eq5G5nviPUQ8+eEJvYOShEMPyTiSQVkpVmVbskqxw6qp1KdK1dxW3nJ41JIQ= Content-Type: text/plain; charset="us-ascii" Content-ID: <7DA0F6E4E77DF64B87BF2DF516986776@namprd15.prod.outlook.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: 70c0967b-98c8-44cd-25cf-08d6dd84ab7c X-MS-Exchange-CrossTenant-originalarrivaltime: 21 May 2019 00:38:40.5953 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 8ae927fe-1255-47a7-a2af-5f3a069daaa2 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR15MB3030 X-OriginatorOrg: fb.com X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-05-20_09:,, signatures=0 X-Proofpoint-Spam-Reason: safe X-FB-Internal: Safe X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Mon, May 20, 2019 at 03:40:04PM +1000, Tobin C. Harding wrote: > It is advantageous to have all defragmentable slabs together at the > beginning of the list of slabs so that there is no need to scan the > complete list. Put defragmentable caches first when adding a slab cache > and others last. >=20 > Co-developed-by: Christoph Lameter > Signed-off-by: Tobin C. Harding Reviewed-by: Roman Gushchin