On Thu, Jul 15, 2021 at 04:34:49AM +0100, Matthew Wilcox (Oracle) wrote: > 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 <kirill.shutemov@linux.intel.com> > Acked-by: Vlastimil Babka <vbabka@suse.cz> > Reviewed-by: William Kucharski <william.kucharski@oracle.com> > Reviewed-by: David Howells <dhowells@redhat.com> > --- > include/linux/mm.h | 15 +++++++++++++++ > 1 file changed, 15 insertions(+) Acked-by: Mike Rapoport <rppt@linux.ibm.com>
diff --git a/include/linux/mm.h b/include/linux/mm.h index 5071084a71b9..0e14ac29a3e9 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1144,6 +1144,11 @@ 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) { @@ -1559,6 +1564,16 @@ 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) {