[PATCH v13 03/32] mm: Add folio_pgdat(), folio_zone() and folio_zonenum()
From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Date: 2021-07-12 19:04:36
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. No change to generated code. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Zi Yan <ziy@nvidia.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Jeff Layton <jlayton@kernel.org> Acked-by: Kirill A. Shutemov <redacted> Acked-by: Vlastimil Babka <redacted> Reviewed-by: William Kucharski <redacted> Reviewed-by: David Howells <dhowells@redhat.com> --- include/linux/mm.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 054812351960..460e9805dd9f 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h@@ -1143,6 +1143,11 @@ static inline enum zone_type page_zonenum(const struct page *page) return (page->flags >> ZONES_PGSHIFT) & ZONES_MASK; } +static inline enum zone_type folio_zonenum(const struct folio *folio) +{ + return page_zonenum(&folio->page); +} + #ifdef CONFIG_ZONE_DEVICE static inline bool is_zone_device_page(const struct page *page) {
@@ -1558,6 +1563,16 @@ 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) {
--
2.30.2