Remove the now unnecessary ifdef in mm/damon/vaddr.c as well.

Signed-off-by: James Houghton <redacted>
---
  include/linux/mmu_notifier.h | 7 +++++++
  mm/damon/vaddr.c             | 2 --
  2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/include/linux/mmu_notifier.h b/include/linux/mmu_notifier.h
index d39ebb10caeb..e2dd57ca368b 100644
--- a/include/linux/mmu_notifier.h
+++ b/include/linux/mmu_notifier.h

@@ -606,6 +606,13 @@ static inline int mmu_notifier_clear_flush_young(struct mm_struct *mm,
  	return 0;
  }
  
+static inline int mmu_notifier_clear_young(struct mm_struct *mm,
+					   unsigned long start,
+					   unsigned long end)
+{
+	return 0;
+}
+
  static inline int mmu_notifier_test_young(struct mm_struct *mm,
  					  unsigned long address)
  {

diff --git a/mm/damon/vaddr.c b/mm/damon/vaddr.c
index 381559e4a1fa..a453d77565e6 100644
--- a/mm/damon/vaddr.c
+++ b/mm/damon/vaddr.c

@@ -351,11 +351,9 @@ static void damon_hugetlb_mkold(pte_t *pte, struct mm_struct *mm,
  		set_huge_pte_at(mm, addr, pte, entry, psize);
  	}
  
-#ifdef CONFIG_MMU_NOTIFIER
  	if (mmu_notifier_clear_young(mm, addr,
  				     addr + huge_page_size(hstate_vma(vma))))
  		referenced = true;
-#endif /* CONFIG_MMU_NOTIFIER */
  
  	if (referenced)
  		folio_set_young(folio);