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Thu, 12 Aug 2021 06:31:23 +0000 From: Alex Sierra To: akpm@linux-foundation.org, Felix.Kuehling@amd.com, linux-mm@kvack.org, rcampbell@nvidia.com, linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org Cc: amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, hch@lst.de, jgg@nvidia.com, jglisse@redhat.com Subject: [PATCH v5 06/13] include/linux/mm.h: helpers to check zone device generic type Date: Thu, 12 Aug 2021 01:30:53 -0500 Message-Id: <20210812063100.31997-7-alex.sierra@amd.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210812063100.31997-1-alex.sierra@amd.com> References: <20210812063100.31997-1-alex.sierra@amd.com> Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: SN7PR18CA0026.namprd18.prod.outlook.com (2603:10b6:806:f3::18) To SA0PR12MB4430.namprd12.prod.outlook.com (2603:10b6:806:70::20) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from alex-MS-7B09.amd.com (165.204.78.1) by SN7PR18CA0026.namprd18.prod.outlook.com (2603:10b6:806:f3::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4415.17 via Frontend Transport; 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One checks if zone device page is generic type. The other if page is either private or generic type. Signed-off-by: Alex Sierra --- include/linux/mm.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/linux/mm.h b/include/linux/mm.h index c0fcb47d7641..8853acb89b1a 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1125,6 +1125,14 @@ static inline bool is_device_private_page(const struct page *page) page->pgmap->type == MEMORY_DEVICE_PRIVATE; } +static inline bool is_device_page(const struct page *page) +{ + return IS_ENABLED(CONFIG_DEV_PAGEMAP_OPS) && + is_zone_device_page(page) && + (page->pgmap->type == MEMORY_DEVICE_PRIVATE || + page->pgmap->type == MEMORY_DEVICE_GENERIC); +} + static inline bool is_pci_p2pdma_page(const struct page *page) { return IS_ENABLED(CONFIG_DEV_PAGEMAP_OPS) && -- 2.32.0