Re: [PATCH v4 2/6] mm: hugetlbfs: fix cannot migrate the fallocated HugeTLB page

[Oscar Salvador]

On Wed, Jan 13, 2021 at 01:22:05PM +0800, Muchun Song wrote:
> If a new hugetlb page is allocated during fallocate it will not be
> marked as active (set_page_huge_active) which will result in a later
> isolate_huge_page failure when the page migration code would like to
> move that page. Such a failure would be unexpected and wrong.
> 
> Only export set_page_huge_active, just leave clear_page_huge_active
> as static. Because there are no external users.
> 
> Fixes: 70c3547e36f5 (hugetlbfs: add hugetlbfs_fallocate())
> Signed-off-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>
> Acked-by: Michal Hocko <mhocko@xxxxxxxx>
> Reviewed-by: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
> Cc: stable@xxxxxxxxxxxxxxx

Reviewed-by: Oscar Salvador <osalvador@xxxxxxx>

-- 
Oscar Salvador
SUSE L3