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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 01/16] slub: Add isolate() and migrate() methods Thread-Topic: [RFC PATCH v5 01/16] slub: Add isolate() and migrate() methods Thread-Index: AQHVDs6pVcV/OG74Wk6CpvJtS3vh06Z0vQqA Date: Tue, 21 May 2019 00:37:16 +0000 Message-ID: <20190521003709.GA21811@tower.DHCP.thefacebook.com> References: <20190520054017.32299-1-tobin@kernel.org> <20190520054017.32299-2-tobin@kernel.org> In-Reply-To: <20190520054017.32299-2-tobin@kernel.org> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: MWHPR03CA0006.namprd03.prod.outlook.com (2603:10b6:300:117::16) 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: d99cefef-97a6-4cbe-1c5b-08d6dd847948 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:8273; 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);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: bafUyGvs+JShrCdkx+i9PqhNPl7JekYoyH+hc3VkdhMYWXujaWEKv0qb1nRn/qHYxRN4vv8HSbcqxbYMCmlbff+HC6/t0cQj1YVCsjB6XQ0FY77txq1cwq+7BPdjMskEC4OZzrs3i2FHsKaqxnCLsjeXc31lgVU2sLoOmyD0OFrEG8A0G+G8j/MZy2u9fAoFmu5WpYrSTqxEVgoGOHlC1u28Fch/daYKUsGp/MgG0SaW8UUmEB3x9Tz79nIthZChJ0MpzFNt6SdhKPW1Oj8GIkXKEjQEgAt/I+JV+aAK7+noNGEn8BuCU+1CQ0BgAmHd8bhhvjZnmMY6oTSuLMVT00mwj97C963bBiZvI4l6vsIaBrDTO7q9NfR83FXlwURDLwPLP0tDa+rS5praDNjN1S5QGPG22xmp7ovXP8cvaqk= Content-Type: text/plain; charset="us-ascii" Content-ID: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: d99cefef-97a6-4cbe-1c5b-08d6dd847948 X-MS-Exchange-CrossTenant-originalarrivaltime: 21 May 2019 00:37:16.3502 (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-Details: rule=fb_default_notspam policy=fb_default score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=442 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1905210002 X-FB-Internal: deliver 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 03:40:02PM +1000, Tobin C. Harding wrote: > Add the two methods needed for moving objects and enable the display of > the callbacks via the /sys/kernel/slab interface. >=20 > Add documentation explaining the use of these methods and the prototypes > for slab.h. Add functions to setup the callbacks method for a slab > cache. >=20 > Add empty functions for SLAB/SLOB. The API is generic so it could be > theoretically implemented for these allocators as well. >=20 > Change sysfs 'ctor' field to be 'ops' to contain all the callback > operations defined for a slab cache. Display the existing 'ctor' > callback in the ops fields contents along with 'isolate' and 'migrate' > callbacks. >=20 > Co-developed-by: Christoph Lameter > Signed-off-by: Tobin C. Harding > --- > include/linux/slab.h | 70 ++++++++++++++++++++++++++++++++++++++++ > include/linux/slub_def.h | 3 ++ > mm/slub.c | 59 +++++++++++++++++++++++++++++---- > 3 files changed, 126 insertions(+), 6 deletions(-) Reviewed-by: Roman Gushchin Thanks!