diff --git a/mm/rmap.c b/mm/rmap.c
index 068522d8502a58e9465a963e68c37ce4ccf635d7..edc0aea2c4e3aa5924b75bb9f680a36fdfb99ab8 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -1512,7 +1512,7 @@ static int try_to_unmap_anon(struct page *page, enum ttu_flags flags)
 static int try_to_unmap_file(struct page *page, enum ttu_flags flags)
 {
 	struct address_space *mapping = page->mapping;
-	pgoff_t pgoff = page->index << (PAGE_CACHE_SHIFT - PAGE_SHIFT);
+	pgoff_t pgoff = page->index << compound_order(page);
 	struct vm_area_struct *vma;
 	int ret = SWAP_AGAIN;
 	unsigned long cursor;
@@ -1520,9 +1520,6 @@ static int try_to_unmap_file(struct page *page, enum ttu_flags flags)
 	unsigned long max_nl_size = 0;
 	unsigned int mapcount;
 
-	if (PageHuge(page))
-		pgoff = page->index << compound_order(page);
-
 	mutex_lock(&mapping->i_mmap_mutex);
 	vma_interval_tree_foreach(vma, &mapping->i_mmap, pgoff, pgoff) {
 		unsigned long address = vma_address(page, vma);
@@ -1712,7 +1709,7 @@ static int rmap_walk_file(struct page *page, int (*rmap_one)(struct page *,
 		struct vm_area_struct *, unsigned long, void *), void *arg)
 {
 	struct address_space *mapping = page->mapping;
-	pgoff_t pgoff = page->index << (PAGE_CACHE_SHIFT - PAGE_SHIFT);
+	pgoff_t pgoff = page->index << compound_order(page);
 	struct vm_area_struct *vma;
 	int ret = SWAP_AGAIN;