From 628e1b8c4777941e119effc92cd395b4b02c2c5f Mon Sep 17 00:00:00 2001 From: James Houghton Date: Mon, 21 Oct 2024 16:02:12 +0000 Subject: [PATCH] mm: add missing mmu_notifier_clear_young for !MMU_NOTIFIER Remove the now unnecessary ifdef in mm/damon/vaddr.c as well. Link: https://lkml.kernel.org/r/20241021160212.9935-1-jthoughton@google.com Signed-off-by: James Houghton Reviewed-by: Jason Gunthorpe Acked-by: David Hildenbrand Reviewed-by: SeongJae Park Reviewed-by: Oscar Salvador Signed-off-by: Andrew Morton --- 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 08cfd22b5249..821990d0141a 100644 --- a/mm/damon/vaddr.c +++ b/mm/damon/vaddr.c @@ -353,11 +353,9 @@ 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); -- 2.25.1