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From:   "Matthew Wilcox (Oracle)" <willy@infradead.org>
To:     linux-mm@kvack.org
Cc:     "Matthew Wilcox (Oracle)" <willy@infradead.org>,
        linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
        Zi Yan <ziy@nvidia.com>
Subject: [PATCH v4 02/25] mm: Add folio_pgdat and folio_zone
Date:   Fri,  5 Mar 2021 04:18:38 +0000
Message-Id: <20210305041901.2396498-3-willy@infradead.org>
In-Reply-To: <20210305041901.2396498-1-willy@infradead.org>
References: <20210305041901.2396498-1-willy@infradead.org>
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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