Re: [PATCH v7 7/7] mm,page_alloc: Drop unnecessary checks from pfn_range_valid_contig

[Mike Kravetz]

On 4/13/21 3:47 AM, Oscar Salvador wrote:
> pfn_range_valid_contig() bails out when it finds an in-use page or a
> hugetlb page, among other things.
> We can drop the in-use page check since __alloc_contig_pages can migrate
> away those pages, and the hugetlb page check can go too since
> isolate_migratepages_range is now capable of dealing with hugetlb pages.
> Either way, those checks are racy so let the end function handle it
> when the time comes.
> 
> Signed-off-by: Oscar Salvador <osalvador@xxxxxxx>
> Suggested-by: David Hildenbrand <david@xxxxxxxxxx>
> Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
> ---
>  mm/page_alloc.c | 6 ------
>  1 file changed, 6 deletions(-)

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