mm: numa: split_huge_page: transfer the NUMA type from the pmd to the pte

When we split a transparent hugepage, transfer the NUMA type from the
pmd to the pte if needed.

Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Mel Gorman <mgorman@suse.de>
Reviewed-by: Rik van Riel <riel@redhat.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 35c66a269bcc..cd24aa562144 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -1364,6 +1364,8 @@ static int __split_huge_page_map(struct page *page,
                                 BUG_ON(page_mapcount(page) != 1);
                         if (!pmd_young(*pmd))
                                 entry = pte_mkold(entry);
+                        if (pmd_numa(*pmd))
+                                entry = pte_mknuma(entry);
                         pte = pte_offset_map(&_pmd, haddr);
                         BUG_ON(!pte_none(*pte));
                         set_pte_at(mm, haddr, pte, entry);