diff --git a/mm/filemap.c b/mm/filemap.c
index d8317ca..8e629c4 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -179,8 +179,7 @@
  * is safe.  The caller must hold the mapping's tree_lock and
  * lock_page_memcg().
  */
-void __delete_from_page_cache(struct page *page, void *shadow,
-			      struct mem_cgroup *memcg)
+void __delete_from_page_cache(struct page *page, void *shadow)
 {
 	struct address_space *mapping = page->mapping;
 
@@ -239,8 +238,7 @@
 	 * anyway will be cleared before returning page into buddy allocator.
 	 */
 	if (WARN_ON_ONCE(PageDirty(page)))
-		account_page_cleaned(page, mapping, memcg,
-				     inode_to_wb(mapping->host));
+		account_page_cleaned(page, mapping, inode_to_wb(mapping->host));
 }
 
 /**
@@ -254,7 +252,6 @@
 void delete_from_page_cache(struct page *page)
 {
 	struct address_space *mapping = page->mapping;
-	struct mem_cgroup *memcg;
 	unsigned long flags;
 
 	void (*freepage)(struct page *);
@@ -263,11 +260,11 @@
 
 	freepage = mapping->a_ops->freepage;
 
-	memcg = lock_page_memcg(page);
+	lock_page_memcg(page);
 	spin_lock_irqsave(&mapping->tree_lock, flags);
-	__delete_from_page_cache(page, NULL, memcg);
+	__delete_from_page_cache(page, NULL);
 	spin_unlock_irqrestore(&mapping->tree_lock, flags);
-	unlock_page_memcg(memcg);
+	unlock_page_memcg(page);
 
 	if (freepage)
 		freepage(page);
@@ -551,7 +548,6 @@
 	if (!error) {
 		struct address_space *mapping = old->mapping;
 		void (*freepage)(struct page *);
-		struct mem_cgroup *memcg;
 		unsigned long flags;
 
 		pgoff_t offset = old->index;
@@ -561,9 +557,9 @@
 		new->mapping = mapping;
 		new->index = offset;
 
-		memcg = lock_page_memcg(old);
+		lock_page_memcg(old);
 		spin_lock_irqsave(&mapping->tree_lock, flags);
-		__delete_from_page_cache(old, NULL, memcg);
+		__delete_from_page_cache(old, NULL);
 		error = radix_tree_insert(&mapping->page_tree, offset, new);
 		BUG_ON(error);
 		mapping->nrpages++;
@@ -576,7 +572,7 @@
 		if (PageSwapBacked(new))
 			__inc_zone_page_state(new, NR_SHMEM);
 		spin_unlock_irqrestore(&mapping->tree_lock, flags);
-		unlock_page_memcg(memcg);
+		unlock_page_memcg(old);
 		mem_cgroup_migrate(old, new);
 		radix_tree_preload_end();
 		if (freepage)