[PATCH v1 05/16] mm/oom_kill: use MMU_NOTIFY_CLEAR in __oom_reap_task_mm()

David Hildenbrand (Arm)
2026-02-27T20:10:36Z

In commit 7269f999934b ("mm/mmu_notifier: use correct mmu_notifier events
for each invalidation") we converted all MMU_NOTIFY_UNMAP to
MMU_NOTIFY_CLEAR, except the ones that actually perform munmap() or
mremap() as documented.

__oom_reap_task_mm() behaves much more like MADV_DONTNEED. So use
MMU_NOTIFY_CLEAR as well.

This is a preparation for further changes.

Signed-off-by: David Hildenbrand (Arm) <david@kernel.org>
---
mm/oom_kill.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 5c6c95c169ee..0ba56fcd10d5 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -551,7 +551,7 @@ static bool __oom_reap_task_mm(struct mm_struct *mm)
struct mmu_notifier_range range;
struct mmu_gather tlb;

- mmu_notifier_range_init(&range, MMU_NOTIFY_UNMAP, 0,
+ mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0,
mm, vma->vm_start,
vma->vm_end);
tlb_gather_mmu(&tlb, mm);
--
2.43.0