[RFC PATCH 3/5] include/linux/mm.h: helper to check zone device generic type
From: Felix Kuehling <hidden>
Date: 2021-05-27 23:10:30
Also in:
amd-gfx, dri-devel
Subsystem:
memory management - core, the rest · Maintainers:
Andrew Morton, David Hildenbrand, Linus Torvalds
From: Alex Sierra <redacted> Helper to check if zone device page is generic type. Signed-off-by: Alex Sierra <redacted> --- include/linux/mm.h | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index c9900aedc195..1af7b9b76948 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h@@ -1158,6 +1158,13 @@ static inline bool is_device_private_page(const struct page *page) page->pgmap->type == MEMORY_DEVICE_PRIVATE; } +static inline bool is_device_generic_page(const struct page *page) +{ + return IS_ENABLED(CONFIG_DEV_PAGEMAP_OPS) && + is_zone_device_page(page) && + page->pgmap->type == MEMORY_DEVICE_GENERIC; +} + static inline bool is_pci_p2pdma_page(const struct page *page) { return IS_ENABLED(CONFIG_DEV_PAGEMAP_OPS) &&
--
2.31.1