Linguine and Shrimp

This is a nice, light supper.

Cook linguine al dente.
In a deep frying pan, pour ¼ cup olive oil, 1 tbsp. butter, 1 tsp. crushed garlic, (or two cloves), 8 sliced button mushrooms, 1 pkg. thawed and rinsed shrimp (with tails removed). Add oregano, pepper, parsley, onion flakes and red pepper flakes. Cook until mushrooms are tender. Add ½ cup of mayonnaise and mix until smooth. Serve over strained linguine.