Same here. I'm maintaining a script which generate a file, sets up a loopback device and dmcrypt, then mounts the resulting map. Every of these operations but t

Same here. I'm maintaining a script which generate a file, sets up a loopback device and dmcrypt, then mounts the resulting map. Every of these operations but the mount can be done in a way that the kernel will remove them once they're not needed anymore, i.e. unmounting the filesystem leads to the dm-crypt map being discarded, leads to the loopback device being removed and the space reserved by the file being freed. This even persists past the exit of the script.