diff --git a/fs/ext4/block_validity.c b/fs/ext4/block_validity.c
index a60ab9aad57d4f5807adb72b702042056132e08a..983f0e1274939b4506c91ea23c3c7d38ae624a88 100644
--- a/fs/ext4/block_validity.c
+++ b/fs/ext4/block_validity.c
@@ -205,14 +205,14 @@ void ext4_release_system_zone(struct super_block *sb)
 		entry = rb_entry(n, struct ext4_system_zone, node);
 		kmem_cache_free(ext4_system_zone_cachep, entry);
 		if (!parent)
-			EXT4_SB(sb)->system_blks.rb_node = NULL;
+			EXT4_SB(sb)->system_blks = RB_ROOT;
 		else if (parent->rb_left == n)
 			parent->rb_left = NULL;
 		else if (parent->rb_right == n)
 			parent->rb_right = NULL;
 		n = parent;
 	}
-	EXT4_SB(sb)->system_blks.rb_node = NULL;
+	EXT4_SB(sb)->system_blks = RB_ROOT;
 }
 
 /*
diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c
index 29857ddd9e2602e6cdaa59ba7976422f54815c8e..86cb6d86a04806d260d0078efff6c45d4eb9d633 100644
--- a/fs/ext4/dir.c
+++ b/fs/ext4/dir.c
@@ -305,7 +305,7 @@ static void free_rb_tree_fname(struct rb_root *root)
 			kfree(old);
 		}
 		if (!parent)
-			root->rb_node = NULL;
+			*root = RB_ROOT;
 		else if (parent->rb_left == n)
 			parent->rb_left = NULL;
 		else if (parent->rb_right == n)
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 37d2438e0cb4d716358f08fd62ca5b0403b74f4c..abb11e328b6504b62fe1e000c25cd6fa0f20213e 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -2253,7 +2253,7 @@ int ext4_mb_add_groupinfo(struct super_block *sb, ext4_group_t group,
 
 	INIT_LIST_HEAD(&meta_group_info[i]->bb_prealloc_list);
 	init_rwsem(&meta_group_info[i]->alloc_sem);
-	meta_group_info[i]->bb_free_root.rb_node = NULL;
+	meta_group_info[i]->bb_free_root = RB_ROOT;
 
 #ifdef DOUBLE_CHECK
 	{