1 files changed, 3 insertions, 1 deletions

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 3c275ffd32a7..303fb0c02364 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -2324,9 +2324,11 @@ retry_avoidcopy:
          * and just make the page writable */
         avoidcopy = (page_mapcount(old_page) == 1);
         if (avoidcopy) {
-                if (!trylock_page(old_page))
+                if (!trylock_page(old_page)) {
                         if (PageAnon(old_page))
                                 page_move_anon_rmap(old_page, vma, address);
+                } else
+                        unlock_page(old_page);
                 set_huge_ptep_writable(vma, address, ptep);
                 return 0;
         }