diff options
author | Vlastimil Babka <vbabka@suse.cz> | 2021-11-25 18:15:37 +0100 |
---|---|---|
committer | Vlastimil Babka <vbabka@suse.cz> | 2021-12-20 01:02:27 +0100 |
commit | 7d4203c13435c0bdae61bf16bbd0408d5b958ade (patch) | |
tree | 7ae59ad086d9903213fc6a87cbe76887a5570ada | |
parent | a7904a538933c525096ca2ccde1e60d0ee62c08e (diff) |
mm: add virt_to_folio() and folio_address()
These two wrappers around their respective struct page variants will be
useful in the following patches.
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Roman Gushchin <guro@fb.com>
-rw-r--r-- | include/linux/mm.h | 12 |
1 files changed, 12 insertions, 0 deletions
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); |