Re: [PATCH] mm/hugetlb: use helper function range_in_vma() in page_table_shareable()

[Mike Kravetz]

On 2/4/21 3:29 AM, Miaohe Lin wrote:
> We could use helper function range_in_vma() to check whether the vma is in
> the desired range to simplify the code.
> 
> Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
> ---
>  mm/hugetlb.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Thanks,

Reviewed-by: Mike Kravetz <mike.kravetz@xxxxxxxxxx>

-- 
Mike Kravetz

> 
> diff --git a/mm/hugetlb.c b/mm/hugetlb.c
> index cf82629319ed..442705be052a 100644
> --- a/mm/hugetlb.c
> +++ b/mm/hugetlb.c
> @@ -5237,7 +5237,7 @@ static unsigned long page_table_shareable(struct vm_area_struct *svma,
>  	 */
>  	if (pmd_index(addr) != pmd_index(saddr) ||
>  	    vm_flags != svm_flags ||
> -	    sbase < svma->vm_start || svma->vm_end < s_end)
> +	    !range_in_vma(svma, sbase, s_end))
>  		return 0;
>  
>  	return saddr;
>