[PATCH v6 06/13] include/linux/mm.h: helpers to check zone device generic type
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 --- include/linux/mm.h | 8 1 file changed, 8 insertions(+) diff --git a/include/linux/mm.h b/include/linux/mm.h index d48a1f0889d1..c25cdb92038f 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1187,6 +1187,14 @@ 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
Re: [PATCH v6 06/13] include/linux/mm.h: helpers to check zone device generic type
On Fri, Aug 13, 2021 at 01:31:43AM -0500, Alex Sierra wrote: > 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 Looks good, Reviewed-by: Christoph Hellwig