[PATCH v6 12/27] mm/filemap: Add folio_offset and folio_file_offset

Matthew Wilcox (Oracle)
2021-03-31T18:53:31Z

These are just wrappers around their page counterpart.

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

diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index 3aefe6558f7d..b4570422a691 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -634,6 +634,16 @@ static inline loff_t page_file_offset(struct page *page)
return ((loff_t)page_index(page)) << PAGE_SHIFT;
}

+static inline loff_t folio_offset(struct folio *folio)
+{
+ return page_offset(&folio->page);
+}
+
+static inline loff_t folio_file_offset(struct folio *folio)
+{
+ return page_file_offset(&folio->page);
+}
+
extern pgoff_t linear_hugepage_index(struct vm_area_struct *vma,
unsigned long address);

--
2.30.2