diff --git a/include/linux/swap.h b/include/linux/swap.h
index f30c06908f09ac66bd2c098d02850ff160128a2c..259e96c150efb674089e0c50c4f85ed0e4caba6c 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -282,8 +282,10 @@ extern void si_swapinfo(struct sysinfo *);
 extern swp_entry_t get_swap_page(void);
 extern swp_entry_t get_swap_page_of_type(int);
 extern int swap_duplicate(swp_entry_t);
+extern int swapcache_prepare(swp_entry_t);
 extern int valid_swaphandles(swp_entry_t, unsigned long *);
 extern void swap_free(swp_entry_t);
+extern void swapcache_free(swp_entry_t, struct page *page);
 extern int free_swap_and_cache(swp_entry_t);
 extern int swap_type_of(dev_t, sector_t, struct block_device **);
 extern unsigned int count_swap_pages(int, int);
@@ -352,11 +354,16 @@ static inline void show_swap_cache_info(void)
 
 #define free_swap_and_cache(swp)	is_migration_entry(swp)
 #define swap_duplicate(swp)		is_migration_entry(swp)
+#define swapcache_prepare(swp)		is_migration_entry(swp)
 
 static inline void swap_free(swp_entry_t swp)
 {
 }
 
+static inline void swapcache_free(swp_entry_t swp, struct page *page)
+{
+}
+
 static inline struct page *swapin_readahead(swp_entry_t swp, gfp_t gfp_mask,
 			struct vm_area_struct *vma, unsigned long addr)
 {
diff --git a/mm/shmem.c b/mm/shmem.c
index 0132fbd45a23837d5abc3cdea527a6d3cafb53a7..47ab191822876c673249d77fb08c4ad7430a598f 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1097,7 +1097,7 @@ static int shmem_writepage(struct page *page, struct writeback_control *wbc)
 	shmem_swp_unmap(entry);
 unlock:
 	spin_unlock(&info->lock);
-	swap_free(swap);
+	swapcache_free(swap, NULL);
 redirty:
 	set_page_dirty(page);
 	if (wbc->for_reclaim)
diff --git a/mm/swap_state.c b/mm/swap_state.c
index 1416e7e9e02db3b5da60fe3a270e98e7b84024bb..19bdf3017a9ed30d7dccdd97ceb62bc06c029c4b 100644
--- a/mm/swap_state.c
+++ b/mm/swap_state.c
@@ -162,11 +162,11 @@ int add_to_swap(struct page *page)
 			return 1;
 		case -EEXIST:
 			/* Raced with "speculative" read_swap_cache_async */
-			swap_free(entry);
+			swapcache_free(entry, NULL);
 			continue;
 		default:
 			/* -ENOMEM radix-tree allocation failure */
-			swap_free(entry);
+			swapcache_free(entry, NULL);
 			return 0;
 		}
 	}
@@ -188,8 +188,7 @@ void delete_from_swap_cache(struct page *page)
 	__delete_from_swap_cache(page);
 	spin_unlock_irq(&swapper_space.tree_lock);
 
-	mem_cgroup_uncharge_swapcache(page, entry);
-	swap_free(entry);
+	swapcache_free(entry, page);
 	page_cache_release(page);
 }
 
@@ -293,7 +292,7 @@ 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 (!swap_duplicate(entry))
+		if (!swapcache_prepare(entry))
 			break;
 
 		/*
@@ -317,7 +316,7 @@ struct page *read_swap_cache_async(swp_entry_t entry, gfp_t gfp_mask,
 		}
 		ClearPageSwapBacked(new_page);
 		__clear_page_locked(new_page);
-		swap_free(entry);
+		swapcache_free(entry, NULL);
 	} while (err != -ENOMEM);
 
 	if (new_page)
diff --git a/mm/swapfile.c b/mm/swapfile.c
index 312fafe0ab6ed4815ac02da3f712aca18bacbbad..3187079903fdac21de25b12c24ec90c3d23266e0 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -509,6 +509,16 @@ void swap_free(swp_entry_t entry)
 	}
 }
 
+/*
+ * Called after dropping swapcache to decrease refcnt to swap entries.
+ */
+void swapcache_free(swp_entry_t entry, struct page *page)
+{
+	if (page)
+		mem_cgroup_uncharge_swapcache(page, entry);
+	return swap_free(entry);
+}
+
 /*
  * How many references to page are currently swapped out?
  */
@@ -1979,6 +1989,15 @@ int swap_duplicate(swp_entry_t entry)
 	goto out;
 }
 
+/*
+ * Called when allocating swap cache for exising swap entry,
+ */
+int swapcache_prepare(swp_entry_t entry)
+{
+	return swap_duplicate(entry);
+}
+
+
 struct swap_info_struct *
 get_swap_info_struct(unsigned type)
 {
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 2c4b945b011f3b3f8dba2913d118aa0789fccd9d..52339dd7bf858856f623516f836a653ad7542033 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -470,8 +470,7 @@ static int __remove_mapping(struct address_space *mapping, struct page *page)
 		swp_entry_t swap = { .val = page_private(page) };
 		__delete_from_swap_cache(page);
 		spin_unlock_irq(&mapping->tree_lock);
-		mem_cgroup_uncharge_swapcache(page, swap);
-		swap_free(swap);
+		swapcache_free(swap, page);
 	} else {
 		__remove_from_page_cache(page);
 		spin_unlock_irq(&mapping->tree_lock);