[PATCH 3/8] mm/rmap: use folio_page_swap_entry() in ttu_anon_swapbacked_folio()

[Tal Zussman]

We already have the folio here, so use folio_page_swap_entry() instead
of going through page_swap_entry(). This saves a call to
compound_head().

No functional change.

Signed-off-by: Tal Zussman <tz2294 at columbia.edu>
---
 mm/rmap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/rmap.c b/mm/rmap.c
index fed0362e0bd0..ef34126c6ce8 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -2143,7 +2143,7 @@ static bool ttu_anon_swapbacked_folio(struct vm_area_struct *vma,
 {
 	const bool anon_exclusive = folio_test_anon(folio) &&
 				    PageAnonExclusive(page);
-	swp_entry_t entry = page_swap_entry(page);
+	swp_entry_t entry = folio_page_swap_entry(folio, page);
 	struct mm_struct *mm = vma->vm_mm;
 
 	if (folio_dup_swap(folio, page) < 0)

-- 
2.39.5