[PATCH v2 01/33] mm: add virt_to_folio() and folio_address()
From: Vlastimil Babka <hidden>
Date: 2021-12-01 18:15:55
Also in:
linux-patches
Subsystem:
memory management - core, the rest · Maintainers:
Andrew Morton, David Hildenbrand, Linus Torvalds
These two wrappers around their respective struct page variants will be useful in the following patches. Signed-off-by: Vlastimil Babka <redacted> --- 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);
--
2.33.1