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Sun, 24 Feb 2019 13:13:50 +0000 Received: from AM0PR04MB4481.eurprd04.prod.outlook.com ([fe80::a51f:134d:b530:f185]) by AM0PR04MB4481.eurprd04.prod.outlook.com ([fe80::a51f:134d:b530:f185%5]) with mapi id 15.20.1643.019; Sun, 24 Feb 2019 13:13:50 +0000 From: Peng Fan To: "dennis@kernel.org" , "tj@kernel.org" , "cl@linux.com" CC: "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , "van.freenix@gmail.com" , Peng Fan Subject: [PATCH 2/2] percpu: km: no need to consider pcpu_group_offsets[0] Thread-Topic: [PATCH 2/2] percpu: km: no need to consider pcpu_group_offsets[0] Thread-Index: AQHUzELI99orDQmet0qADTSfLzpSUQ== Date: Sun, 24 Feb 2019 13:13:50 +0000 Message-ID: <20190224132518.20586-2-peng.fan@nxp.com> References: <20190224132518.20586-1-peng.fan@nxp.com> In-Reply-To: <20190224132518.20586-1-peng.fan@nxp.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.16.4 x-clientproxiedby: HK2PR02CA0131.apcprd02.prod.outlook.com (2603:1096:202:16::15) To AM0PR04MB4481.eurprd04.prod.outlook.com (2603:10a6:208:70::15) authentication-results: spf=none (sender IP is ) smtp.mailfrom=peng.fan@nxp.com; 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received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: ZlgEQcSPGQTUfjrCx6CeqTSgsM1y7qKUgDLM0l8C6SYqoltT3GUTSSDwgDtD5m4jOOXEcqsAp2NM2sIi1rd0Qyel7C7dEh2Q7WTK0H6423BLqRdT+YB7zIMcBG3l0gKdUvImpP692UQsPzvYLlZzXGhjV93U+N+4Cuvfbmr7NIUpYegeP7uB0UGYdWJ1009NIA2cYnIke+QqpHTNKd5ixb8aHcLf54yZwMaEIcxJyp1h+OrETnYhyHiz4P+uhYs9dT3H+UgDx7A5/b6ffDWZRPRyKVIm3guN+npFtvx1kLaW3MqcN8+egdkF3EtxMG1kbWFswWwLis9j+ELSIbqlaxckwpnjgd6ZfUj8L4JN+39fjlCMZMLALE5L1D6Og40Rtltf23oHgZs3GdJR6TrY+LqqRbg4GhKSSEaXop1ymCw= Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 6348761f-7961-49e4-f8b6-08d69a59eac8 X-MS-Exchange-CrossTenant-originalarrivaltime: 24 Feb 2019 13:13:47.7133 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR04MB5651 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000002, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: percpu-km is used on UP systems which only has one group, so the group offset will be always 0, there is no need to subtract pcpu_group_offsets[0] when assigning chunk->base_addr Signed-off-by: Peng Fan --- mm/percpu-km.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/percpu-km.c b/mm/percpu-km.c index 66e5598be876..8872c21a487b 100644 --- a/mm/percpu-km.c +++ b/mm/percpu-km.c @@ -67,7 +67,7 @@ static struct pcpu_chunk *pcpu_create_chunk(gfp_t gfp) pcpu_set_page_chunk(nth_page(pages, i), chunk); =20 chunk->data =3D pages; - chunk->base_addr =3D page_address(pages) - pcpu_group_offsets[0]; + chunk->base_addr =3D page_address(pages); =20 spin_lock_irqsave(&pcpu_lock, flags); pcpu_chunk_populated(chunk, 0, nr_pages, false); --=20 2.16.4