From: Andrea Arcangeli <aarca...@redhat.com>
When we split a transparent hugepage, transfer the NUMA type
from the pmd to the pte if needed.
Signed-off-by: Andrea Arcangeli <aarca...@redhat.com>
Signed-off-by: Mel Gorman <mgor...@suse.de>
Reviewed-by: Rik van Riel <r...@redhat.com>
Cc: Johannes Weiner <han...@cmpxchg.org>
Cc: Hugh Dickins <hu...@google.com>
Cc: Paul Turner <p...@google.com>
Cc: Lee Schermerhorn <lee.schermerh...@hp.com>
Cc: Alex Shi <lkml.a...@gmail.com>
Cc: Srikar Dronamraju <sri...@linux.vnet.ibm.com>
Cc: Aneesh Kumar <aneesh.ku...@linux.vnet.ibm.com>
Cc: Linus Torvalds <torva...@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijls...@chello.nl>
Signed-off-by: Ingo Molnar <mi...@kernel.org>
---
mm/huge_memory.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 35c66a2..cd24aa5 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);
--
1.7.11.7
--
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