These two wrappers around their respective struct page variants will be
useful in the following patches.
Signed-off-by: Vlastimil Babka <vbabka@xxxxxxx>
Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx>
Reviewed-by: Roman Gushchin <guro@xxxxxx>
---
include/linux/mm.h | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index a7e4a9e7d807..4a6cf22483da 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -863,6 +863,13 @@ static inline struct page *virt_to_head_page(const void *x)
return compound_head(page);
}
+static inline struct folio *virt_to_folio(const void *x)
+{
+ struct page *page = virt_to_page(x);
+
+ return page_folio(page);
+}
+
void __put_page(struct page *page);
void put_pages_list(struct list_head *pages);
@@ -1753,6 +1760,11 @@ void page_address_init(void);
#define page_address_init() do { } while(0)
#endif
+static inline void *folio_address(const struct folio *folio)
+{
+ return page_address(&folio->page);
+}
+
extern void *page_rmapping(struct page *page);
extern struct anon_vma *page_anon_vma(struct page *page);
extern pgoff_t __page_file_index(struct page *page);
--
2.34.1
