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[v2,02/27] mm: Add folio_pgdat

Message ID 20210118170148.3126186-3-willy@infradead.org (mailing list archive)
State New
Headers show
Series Page folios | expand

Commit Message

Matthew Wilcox Jan. 18, 2021, 5:01 p.m. UTC
This is just a convenience wrapper for callers with folios; pgdat can
be reached from tail pages as well as head pages.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
 include/linux/mm.h | 5 +++++
 1 file changed, 5 insertions(+)
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diff --git a/include/linux/mm.h b/include/linux/mm.h
index 0858af6479a3..5b071c226fd6 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1500,6 +1500,11 @@  static inline pg_data_t *page_pgdat(const struct page *page)
 	return NODE_DATA(page_to_nid(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)