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Harding" , "Tobin C. Harding" , Andrew Morton , Christoph Lameter , Pekka Enberg , David Rientjes , Joonsoo Kim , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH 0/4] mm: Use slab_list list_head instead of lru Thread-Topic: [PATCH 0/4] mm: Use slab_list list_head instead of lru Thread-Index: AQHU16bt6o0Uju0YQ0mKx1ZofK0W1KYGcySAgACefICAAB6OAIAAGdwAgAD22QA= Date: Tue, 12 Mar 2019 17:22:02 +0000 Message-ID: <20190312172157.GC32504@tower.DHCP.thefacebook.com> References: <20190311010744.5862-1-tobin@kernel.org> <20190311204919.GA20002@tower.DHCP.thefacebook.com> <20190311231633.GF19508@bombadil.infradead.org> <20190312010554.GA9362@eros.localdomain> <20190312023828.GH19508@bombadil.infradead.org> In-Reply-To: <20190312023828.GH19508@bombadil.infradead.org> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: CO2PR04CA0121.namprd04.prod.outlook.com (2603:10b6:104:7::23) To BYAPR15MB2631.namprd15.prod.outlook.com (2603:10b6:a03:152::24) x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [2620:10d:c090:200::2:d3a0] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 38156624-f19e-4885-c261-08d6a70f3dbc x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600127)(711020)(4605104)(2017052603328)(7153060)(7193020);SRVR:BYAPR15MB3175; x-ms-traffictypediagnostic: BYAPR15MB3175: x-microsoft-antispam-prvs: x-forefront-prvs: 09749A275C x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(396003)(346002)(376002)(136003)(39860400002)(366004)(189003)(199004)(7736002)(316002)(386003)(86362001)(105586002)(6506007)(46003)(106356001)(102836004)(81166006)(81156014)(8676002)(186003)(54906003)(5660300002)(93886005)(6116002)(68736007)(4744005)(33656002)(2906002)(97736004)(99286004)(6916009)(76176011)(52116002)(1076003)(7416002)(6486002)(71190400001)(25786009)(6436002)(14454004)(229853002)(8936002)(478600001)(71200400001)(256004)(14444005)(476003)(9686003)(6512007)(6246003)(4326008)(486006)(53936002)(11346002)(305945005)(446003);DIR:OUT;SFP:1102;SCL:1;SRVR:BYAPR15MB3175;H:BYAPR15MB2631.namprd15.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;MX:1;A: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: dW4ccKz8pwgu7uFv4MDYkzacYQ10l0AatXZvykEqExqjJtf+NMSaUUc2HNg+ijhg1dJFw1HpaJ33+NzkoOVvkjbgGDsd7QmNQbpzc6REWF+/Gx7pucElr7SAlmRP9X95F/dUOLRBjI7+Yk6sDnwhRS6coF8s/93+HnoK6ZYlu5KPPzCyyFeuhOkTpevGjyKmBVn7I9RHSZkitUzXAr0bYQ9MVeltRY8dHGmVFHV9rK8L0jJyYrhK7lyC3jrWLvn6fqivdPtcWC6xsu81n6YBBeihnlI0AUwRKzeh6ui94wBMOXpbTHksAI4RejndM8YAoFuxwjvCr1+rX/HM9v45PJ5GXB6WWxMoUasF2fMss5JUEi8V4s3QfxYZfAvJqnW68JcpoF9y16vEdOF1LuQdL8/bXN+v9QTCmOhRaqhT/WE= Content-Type: text/plain; charset="us-ascii" Content-ID: <1F5178F547901B46ADA5BB1AE7AC6125@namprd15.prod.outlook.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: 38156624-f19e-4885-c261-08d6a70f3dbc X-MS-Exchange-CrossTenant-originalarrivaltime: 12 Mar 2019 17:22:02.4214 (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: BYAPR15MB3175 X-OriginatorOrg: fb.com X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-03-12_10:,, 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, Mar 11, 2019 at 07:38:28PM -0700, Matthew Wilcox wrote: > On Tue, Mar 12, 2019 at 12:05:54PM +1100, Tobin C. Harding wrote: > > > slab_list and lru are in the same bits. Once this patch set is in, > > > we can remove the enigmatic 'uses lru' comment that I added. > >=20 > > Funny you should say this, I came to me today while daydreaming that I > > should have removed that comment :) > >=20 > > I'll remove it in v2. >=20 > That's great. BTW, something else you could do to verify this patch > set is check that the object file is unchanged before/after the patch. > I tend to use 'objdump -dr' to before.s and after.s and use 'diff' > to compare the two. Btw, is it guaranteed that the object file will not change? I was about to recommend the same, but was not sure, if such change can cause gcc to generate a *slightly* different obj code. Thanks!