[PATCH v4 02/25] mm: Add folio_pgdat and folio_zone
From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Date: 2021-03-05 04:19:19
Also in:
linux-fsdevel, lkml
Subsystem:
memory management - core, the rest · Maintainers:
Andrew Morton, David Hildenbrand, Linus Torvalds
These are just convenience wrappers for callers with folios; pgdat and zone can be reached from tail pages as well as head pages. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Zi Yan <ziy@nvidia.com> --- include/linux/mm.h | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index a46e5a4385b0..ecfe202aa4ec 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h@@ -1488,6 +1488,16 @@ static inline pg_data_t *page_pgdat(const struct page *page) return NODE_DATA(page_to_nid(page)); } +static inline struct zone *folio_zone(const struct folio *folio) +{ + return page_zone(&folio->page); +} + +static inline pg_data_t *folio_pgdat(const struct folio *folio) +{ + return page_pgdat(&folio->page); +} + #ifdef SECTION_IN_PAGE_FLAGS static inline void set_page_section(struct page *page, unsigned long section) {
--
2.30.0