DAMON virtual address space monitoring operations set treats folios
having non-HPAGE_PMD_SIZE size as having PAGE_SIZE size.  Use the exact
size of the folio.

Signed-off-by: SeongJae Park <sj@kernel.org>
---
 mm/damon/vaddr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/damon/vaddr.c b/mm/damon/vaddr.c
index d6cb1fca1769..c7b192006fe6 100644
--- a/mm/damon/vaddr.c
+++ b/mm/damon/vaddr.c
@@ -475,7 +475,7 @@ static int damon_young_pmd_entry(pmd_t *pmd, unsigned long addr,
 		goto out;
 	if (pte_young(*pte) || !folio_test_idle(folio) ||
 			mmu_notifier_test_young(walk->mm, addr)) {
-		*priv->folio_sz = PAGE_SIZE;
+		*priv->folio_sz = folio_size(folio);
 		priv->young = true;
 	}
 	folio_put(folio);
-- 
2.25.1