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[v9,10/96] mm: Add folio_pgdat and folio_zone

Message ID 20210505150628.111735-11-willy@infradead.org (mailing list archive)
State New
Headers show
Series Memory folios | expand

Commit Message

Matthew Wilcox May 5, 2021, 3:05 p.m. UTC
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>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Jeff Layton <jlayton@kernel.org>
 include/linux/mm.h | 10 ++++++++++
 1 file changed, 10 insertions(+)
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diff --git a/include/linux/mm.h b/include/linux/mm.h
index b29c86824e6b..a55c2c0628b6 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1560,6 +1560,16 @@  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);
 static inline void set_page_section(struct page *page, unsigned long section)