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 <alex.sierra@xxxxxxx>
---
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
