am 212d81a0: Merge "Move all the permissions check up for unmount" into gingerbread

Merge commit '212d81a004f50e51ed8f6d803b79f4b71546b351' into gingerbread-plus-aosp

* commit '212d81a004f50e51ed8f6d803b79f4b71546b351':
  Move all the permissions check up for unmount