Re: [PATCH v4 60/66] mm/oom_kill: Use maple tree iterators instead of vma linked list

[Vlastimil Babka]

On 12/1/21 15:30, Liam Howlett wrote:
> From: "Liam R. Howlett" <Liam.Howlett@xxxxxxxxxx>
> 
> Signed-off-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>

Acked-by: Vlastimil Babka <vbabka@xxxxxxx>

Could be VMA_ITERATOR?

> ---
>  mm/oom_kill.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/mm/oom_kill.c b/mm/oom_kill.c
> index 1ddabefcfb5a..1694b30eb46c 100644
> --- a/mm/oom_kill.c
> +++ b/mm/oom_kill.c
> @@ -516,6 +516,7 @@ bool __oom_reap_task_mm(struct mm_struct *mm)
>  {
>  	struct vm_area_struct *vma;
>  	bool ret = true;
> +	MA_STATE(mas, &mm->mm_mt, 0, 0);
>  
>  	/*
>  	 * Tell all users of get_user/copy_from_user etc... that the content
> @@ -525,7 +526,7 @@ bool __oom_reap_task_mm(struct mm_struct *mm)
>  	 */
>  	set_bit(MMF_UNSTABLE, &mm->flags);
>  
> -	for (vma = mm->mmap ; vma; vma = vma->vm_next) {
> +	mas_for_each(&mas, vma, ULONG_MAX) {
>  		if (!can_madv_lru_vma(vma))
>  			continue;
>