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Wed, 3 Aug 2022 12:40:17 +0000 Date: Wed, 3 Aug 2022 13:40:03 +0100 From: Brian Starkey To: Olivier Masse Cc: sumit.semwal@linaro.org, benjamin.gaignard@collabora.com, christian.koenig@amd.com, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, linux-kernel@vger.kernel.org, clement.faure@nxp.com, nd@arm.com Subject: Re: [PATCH 2/5] ANDROID: dma-buf: heaps: Add a shrinker controlled page pool Message-ID: <20220803124003.jftyp7zj2rnruhsc@000377403353> References: <20220802095843.14614-1-olivier.masse@nxp.com> <20220802095843.14614-3-olivier.masse@nxp.com> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220802095843.14614-3-olivier.masse@nxp.com> X-ClientProxiedBy: SN4PR0501CA0023.namprd05.prod.outlook.com (2603:10b6:803:40::36) To AM9PR08MB6803.eurprd08.prod.outlook.com (2603:10a6:20b:301::12) MIME-Version: 1.0 X-MS-Office365-Filtering-Correlation-Id: 56848dc6-7c48-4c8d-24a5-08da754d5b45 X-MS-TrafficTypeDiagnostic: PR2PR08MB4667:EE_|VE1EUR03FT043:EE_|DBBPR08MB4808:EE_ x-checkrecipientrouted: true NoDisclaimer: true X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam-Untrusted: BCL:0; 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X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 03 Aug 2022 12:40:32.9129 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 56848dc6-7c48-4c8d-24a5-08da754d5b45 X-MS-Exchange-CrossTenant-Id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f34e5979-57d9-4aaa-ad4d-b122a662184d;Ip=[63.35.35.123];Helo=[64aa7808-outbound-1.mta.getcheckrecipient.com] X-MS-Exchange-CrossTenant-AuthSource: VE1EUR03FT043.eop-EUR03.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DBBPR08MB4808 X-Spam-Status: No, score=-0.9 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,FORGED_SPF_HELO,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2, SPF_HELO_PASS,SPF_NONE,UNPARSEABLE_RELAY autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Olivier, On Tue, Aug 02, 2022 at 11:58:40AM +0200, Olivier Masse wrote: > From: John Stultz > > This patch adds a simple shrinker controlled page pool to the > dmabuf heaps subsystem. > > This replaces the use of the networking page_pool, over concerns > that the lack of a shrinker for that implementation may cause > additional low-memory kills > > TODO: Take another pass at trying to unify this w/ the ttm pool > > Thoughts and feedback would be greatly appreciated! Did I miss something, or is this not actually used anywhere? Thanks, -Brian