linux-kernel - [PATCH 38/75] mm: Add folio_is_zone_device() and folio_is_device

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Date:   Fri,  4 Feb 2022 19:58:15 +0000
From:   "Matthew Wilcox (Oracle)" <willy@...radead.org>
To:     linux-mm@...ck.org
Cc:     "Matthew Wilcox (Oracle)" <willy@...radead.org>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 38/75] mm: Add folio_is_zone_device() and folio_is_device_private()

These two wrappers are the equivalent of is_zone_device_page()
and is_device_private_page().

Signed-off-by: Matthew Wilcox (Oracle) <willy@...radead.org>
---
 include/linux/mm.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 6a19cd97d5aa..028bd9336e82 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1096,6 +1096,11 @@ static inline bool is_zone_device_page(const struct page *page)
 }
 #endif
 
+static inline bool folio_is_zone_device(const struct folio *folio)
+{
+	return is_zone_device_page(&folio->page);
+}
+
 static inline bool is_zone_movable_page(const struct page *page)
 {
 	return page_zonenum(page) == ZONE_MOVABLE;
@@ -1142,6 +1147,11 @@ static inline bool is_device_private_page(const struct page *page)
 		page->pgmap->type == MEMORY_DEVICE_PRIVATE;
 }
 
+static inline bool folio_is_device_private(const struct folio *folio)
+{
+	return is_device_private_page(&folio->page);
+}
+
 static inline bool is_pci_p2pdma_page(const struct page *page)
 {
 	return IS_ENABLED(CONFIG_DEV_PAGEMAP_OPS) &&
-- 
2.34.1