On Wed 11-07-18 12:59:13, Mike Kravetz wrote:
> This reverts commit ee8f248d266e ("hugetlb: add phys addr to struct
> huge_bootmem_page")
>
> At one time powerpc used this field and supporting code. However that
> was removed with commit 79cc38ded1e1 ("powerpc/mm/hugetlb: Add support
> for reserving gigantic huge pages via kernel command line").
>
> There are no users of this field and supporting code, so remove it.
>
> Signed-off-by: Mike Kravetz <mike.krav...@oracle.com>
Acked-by: Michal Hocko <mho...@suse.com>
> ---
> include/linux/hugetlb.h | 3 ---
> mm/hugetlb.c | 9 +--------
> 2 files changed, 1 insertion(+), 11 deletions(-)
>
> diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
> index 36fa6a2a82e3..c39d9170a8a0 100644
> --- a/include/linux/hugetlb.h
> +++ b/include/linux/hugetlb.h
> @@ -348,9 +348,6 @@ struct hstate {
> struct huge_bootmem_page {
> struct list_head list;
> struct hstate *hstate;
> -#ifdef CONFIG_HIGHMEM
> - phys_addr_t phys;
> -#endif
> };
>
> struct page *alloc_huge_page(struct vm_area_struct *vma,
> diff --git a/mm/hugetlb.c b/mm/hugetlb.c
> index 430be42b6ca1..e39593df050b 100644
> --- a/mm/hugetlb.c
> +++ b/mm/hugetlb.c
> @@ -2139,16 +2139,9 @@ static void __init gather_bootmem_prealloc(void)
> struct huge_bootmem_page *m;
>
> list_for_each_entry(m, &huge_boot_pages, list) {
> + struct page *page = virt_to_page(m);
> struct hstate *h = m->hstate;
> - struct page *page;
>
> -#ifdef CONFIG_HIGHMEM
> - page = pfn_to_page(m->phys >> PAGE_SHIFT);
> - memblock_free_late(__pa(m),
> - sizeof(struct huge_bootmem_page));
> -#else
> - page = virt_to_page(m);
> -#endif
> WARN_ON(page_count(page) != 1);
> prep_compound_huge_page(page, h->order);
> WARN_ON(PageReserved(page));
> --
> 2.17.1
--
Michal Hocko
SUSE Labs
