---
 mm/hugetlb.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6/mm/hugetlb.c
===================================================================
--- linux-2.6.orig/mm/hugetlb.c
+++ linux-2.6/mm/hugetlb.c
@@ -761,7 +761,7 @@ int copy_hugetlb_page_range(struct mm_st
 			continue;
 
 		spin_lock(&dst->page_table_lock);
-		spin_lock(&src->page_table_lock);
+		spin_lock_nested(&src->page_table_lock, SINGLE_DEPTH_NESTING);
 		if (!pte_none(*src_pte)) {
 			if (cow)
 				ptep_set_wrprotect(src, addr, src_pte);

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