diff mbox series

[v6,02/27] mm: Add folio_pgdat and folio_zone

Message ID 20210331184728.1188084-3-willy@infradead.org (mailing list archive)
State New, archived
Headers show
Series Memory Folios | expand

Commit Message

Matthew Wilcox March 31, 2021, 6:47 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>
---
 include/linux/mm.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

Comments

Christoph Hellwig April 6, 2021, 1:23 p.m. UTC | #1 
On Wed, Mar 31, 2021 at 07:47:03PM +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.
> 
> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
> Reviewed-by: Zi Yan <ziy@nvidia.com>

Looks good,

Reviewed-by: Christoph Hellwig <hch@lst.de>
diff mbox series

Patch

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 761063e733bf..195c4740522d 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1546,6 +1546,16 @@  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)
 {