On Thu, 30 Jul 2015, Vlastimil Babka wrote:
> diff --git a/mm/huge_memory.c b/mm/huge_memory.c
> index aa58a32..56355f2 100644
> --- a/mm/huge_memory.c
> +++ b/mm/huge_memory.c
> @@ -2469,7 +2469,7 @@ khugepaged_alloc_page(struct page **hpage, gfp_t gfp, struct mm_struct *mm,
> */
> up_read(&mm->mmap_sem);
>
> - *hpage = alloc_pages_exact_node(node, gfp, HPAGE_PMD_ORDER);
> + *hpage = __alloc_pages_node(node, gfp, HPAGE_PMD_ORDER);
> if (unlikely(!*hpage)) {
> count_vm_event(THP_COLLAPSE_ALLOC_FAILED);
> *hpage = ERR_PTR(-ENOMEM);
> @@ -2568,9 +2568,7 @@ static void collapse_huge_page(struct mm_struct *mm,
>
> VM_BUG_ON(address & ~HPAGE_PMD_MASK);
>
> - /* Only allocate from the target node */
> - gfp = alloc_hugepage_gfpmask(khugepaged_defrag(), __GFP_OTHER_NODE) |
> - __GFP_THISNODE;
> + gfp = alloc_hugepage_gfpmask(khugepaged_defrag(), 0);
>
> /* release the mmap_sem read lock. */
> new_page = khugepaged_alloc_page(hpage, gfp, mm, vma, address, node);
Hmm, where is the __GFP_THISNODE enforcement in khugepaged_alloc_page()
that is removed in collapse_huge_page()? I also don't see what happened
to the __GFP_OTHER_NODE.
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