1 files changed, 4 insertions, 1 deletions

diff --git a/mm/memory.c b/mm/memory.c
index bb1369f7b9b4..0abd07097ec6 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -3044,7 +3044,10 @@ static int do_swap_page(struct mm_struct *mm, struct vm_area_struct *vma,
         }
         flush_icache_page(vma, page);
         set_pte_at(mm, address, page_table, pte);
-        do_page_add_anon_rmap(page, vma, address, exclusive);
+        if (swapcache) /* ksm created a completely new copy */
+                page_add_new_anon_rmap(page, vma, address);
+        else
+                do_page_add_anon_rmap(page, vma, address, exclusive);
         /* It's better to call commit-charge after rmap is established */
         mem_cgroup_commit_charge_swapin(page, ptr);