lkml.org 
[lkml]   [2021]   [Mar]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v4 02/25] mm: Add folio_pgdat and folio_zone
Date
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(+)

diff --git a/include/linux/mm.h b/include/linux/mm.h
index a46e5a4385b0..ecfe202aa4ec 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1488,6 +1488,16 @@ 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)
{
--
2.30.0
\
 
 \ /
  Last update: 2021-03-05 05:20    [W:0.314 / U:0.768 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site