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

[Lorenzo Stoakes (Oracle)]

On Fri, Feb 27, 2026 at 09:08:36PM +0100, David Hildenbrand (Arm) wrote:
> 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 at kernel.org>

LGTM, so:

Reviewed-by: Lorenzo Stoakes (Oracle) <ljs at 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
>