From 1ba6e0b50b479cbadb8f05ebde3020da9ac87201 Mon Sep 17 00:00:00 2001
From: Andrea Arcangeli <aarcange@redhat.com>
Date: Thu, 4 Oct 2012 01:51:06 +0200
Subject: [PATCH] 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>
---
 mm/huge_memory.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 35c66a269bccc..cd24aa562144a 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);
-- 
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