1 files changed, 1 insertions, 1 deletions

diff --git a/mm/swap_state.c b/mm/swap_state.c
index 65b81c92738f..ec42f01a8d02 100644
--- a/mm/swap_state.c
+++ b/mm/swap_state.c
@@ -125,6 +125,7 @@ int add_to_swap(struct page * page, gfp_t gfp_mask)
         int err;
 
         BUG_ON(!PageLocked(page));
+        BUG_ON(!PageUptodate(page));
 
         for (;;) {
                 entry = get_swap_page();
@@ -147,7 +148,6 @@ int add_to_swap(struct page * page, gfp_t gfp_mask)
 
                 switch (err) {
                 case 0:                         /* Success */
-                        SetPageUptodate(page);
                         SetPageDirty(page);
                         return 1;
                 case -EEXIST: