[PATCH v7 13/28] mm/filemap: Add folio_offset and folio_file_offset

[Matthew Wilcox (Oracle)]

These are just wrappers around their page counterpart.

Signed-off-by: Matthew Wilcox (Oracle) <willy at infradead.org>
Reviewed-by: Christoph Hellwig <hch at lst.de>
Acked-by: Jeff Layton <jlayton at kernel.org>
---
 include/linux/pagemap.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index 5130503519b0..c15e72ee9ea8 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