[PATCH v3 6/8] include/linux/mm.h: helpers to check zone device generic type
From: Alex Sierra <hidden>
Date: 2021-06-17 15:18:33
Also in:
amd-gfx, dri-devel, linux-mm, linux-xfs
Subsystem:
memory management - core, the rest · Maintainers:
Andrew Morton, David Hildenbrand, Linus Torvalds
Two helpers added. One checks if zone device page is generic type. The other if page is either private or generic type. Signed-off-by: Alex Sierra <redacted> --- include/linux/mm.h | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index d8d79bb94be8..f5b247a63044 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) &&
--
2.17.1