hugetlb: fix lockdep error

[linux-2.6-omap-h63xx.git] / mm / hugetlb.c

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index bbf953eeb58bafbad0016a6f73db4844e5514c22..ab171274ef217817291667bee226b45bebe259e3 100644 (file)
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -785,7 +785,7 @@ int copy_hugetlb_page_range(struct mm_struct *dst, struct mm_struct *src,
                        continue;
 
                spin_lock(&dst->page_table_lock);
-               spin_lock(&src->page_table_lock);
+               spin_lock_nested(&src->page_table_lock, SINGLE_DEPTH_NESTING);
                if (!huge_pte_none(huge_ptep_get(src_pte))) {
                        if (cow)
                                huge_ptep_set_wrprotect(src, addr, src_pte);