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

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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>
This commit is contained in:
Andrea Arcangeli 2012-10-04 01:51:06 +02:00 committed by Mel Gorman
parent 0b9d705297
commit 1ba6e0b50b
1 changed files with 2 additions and 0 deletions
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mm/huge_memory.c
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@ -1364,6 +1364,8 @@ static int __split_huge_page_map(struct page *page,
BUG_ON(page_mapcount(page) != 1); BUG_ON(page_mapcount(page) != 1);
if (!pmd_young(*pmd)) if (!pmd_young(*pmd))
entry = pte_mkold(entry); entry = pte_mkold(entry);
if (pmd_numa(*pmd))
entry = pte_mknuma(entry);
pte = pte_offset_map(&_pmd, haddr); pte = pte_offset_map(&_pmd, haddr);
BUG_ON(!pte_none(*pte)); BUG_ON(!pte_none(*pte));
set_pte_at(mm, haddr, pte, entry); set_pte_at(mm, haddr, pte, entry);