1 files changed, 3 insertions, 1 deletions

diff --git a/mm/page_cgroup.c b/mm/page_cgroup.c
index de1616aa9b1e..1ccbd714059c 100644
--- a/mm/page_cgroup.c
+++ b/mm/page_cgroup.c
@@ -379,13 +379,15 @@ static struct swap_cgroup *lookup_swap_cgroup(swp_entry_t ent,
         pgoff_t offset = swp_offset(ent);
         struct swap_cgroup_ctrl *ctrl;
         struct page *mappage;
+        struct swap_cgroup *sc;
 
         ctrl = &swap_cgroup_ctrl[swp_type(ent)];
         if (ctrlp)
                 *ctrlp = ctrl;
 
         mappage = ctrl->map[offset / SC_PER_PAGE];
-        return page_address(mappage) + offset % SC_PER_PAGE;
+        sc = page_address(mappage);
+        return sc + offset % SC_PER_PAGE;
 }
 
 /**