1 files changed, 4 insertions, 1 deletions

diff --git a/mm/swap_state.c b/mm/swap_state.c
index 19bdf3017a9e..b9ca029673a5 100644
--- a/mm/swap_state.c
+++ b/mm/swap_state.c
@@ -292,7 +292,10 @@ struct page *read_swap_cache_async(swp_entry_t entry, gfp_t gfp_mask,
                 /*
                  * Swap entry may have been freed since our caller observed it.
                  */
-                if (!swapcache_prepare(entry))
+                err = swapcache_prepare(entry);
+                if (err == -EEXIST) /* seems racy */
+                        continue;
+                if (err)           /* swp entry is obsolete ? */
                         break;
 
                 /*