On Mon 29-03-21 16:23:56, Mike Kravetz wrote:
> Now that cma_release is non-blocking and irq safe, there is no need to
> drop hugetlb_lock before calling.
>
> Signed-off-by: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
> ---
> mm/hugetlb.c | 6 ------
> 1 file changed, 6 deletions(-)
>
> diff --git a/mm/hugetlb.c b/mm/hugetlb.c
> index 3c3e4baa4156..1d62f0492e7b 100644
> --- a/mm/hugetlb.c
> +++ b/mm/hugetlb.c
> @@ -1353,14 +1353,8 @@ static void update_and_free_page(struct hstate *h, struct page *page)
> set_compound_page_dtor(page, NULL_COMPOUND_DTOR);
> set_page_refcounted(page);
> if (hstate_is_gigantic(h)) {
> - /*
> - * Temporarily drop the hugetlb_lock, because
> - * we might block in free_gigantic_page().
> - */
> - spin_unlock(&hugetlb_lock);
> destroy_compound_gigantic_page(page, huge_page_order(h));
> free_gigantic_page(page, huge_page_order(h));
> - spin_lock(&hugetlb_lock);
> } else {
> __free_pages(page, huge_page_order(h));
> }
> --
> 2.30.2
>
--
Michal Hocko
SUSE Labs
