In A Large Skillet, Cook Bacon Over Medium Heat Until Crisp. Using A Slotted Spoon, Remove To Paper Towels To Drain. In A Small Bowl, Beat Cream Cheese And Mayonnaise Until Smooth. Add The Mushrooms, Garlic Powder And Bacon. Separate Crescent Dough Into Four Rectangles; Seal Perforations. Spread Cream Cheese Mixture Over Each Rectangle To Within 1/4 In. Of Edges. Roll Up Jelly-Roll Style, Starting With A Short Side; Pinch Seams To Seal. Cut Each Into Six Slices. Place Slices Cut Side Down On Greased Baking Sheets. Bake At 375