how to fill middle of image by drag/zoom rest of image

[Ofnuts]

Two ways:

1. "Pinch" part of Filters > Distorts > Whirl and pinch but the pinch isn't completely along radial lines
   
2. Filters > Distorts > Polar coordinates
   • Apply once to unroll (To polar: off)
     
   • Scale the layer to cover the white part
     
   • Apply again to re-roll (To polar: on`)