Pumpkin Pie Salad

1 can pumpkin pie filling
1 (10 1/2 oz.) bag miniature marshmallows
1 C. walnuts, chopped
1 (12 oz.) container Cool Whip
1 sm. box vanilla pudding (add dry)
1 tsp. cinnamon

In a bowl Mix together the Cool Whip and pie filling. Mix well. Add the remaining ingredients. Mix well. Refrigerate before servings.