[Haskell-cafe] Repa array and Data.Vector.Storable.Mutable.

Hello I would like a function which allows to freeze a Mutable Vector into a Repa array. of type Array F DIM2 a It seems to me that the the foreignPtr ownership should be transfer to the Repa Array, but I can not find a way to do this... So what is the proper way to achieve this ? thansk for your help. Frederic