Add module params

Signed-off-by: Andiry Xu <jix024@cs.ucsd.edu>
Add cache file, backing store initialization.

Signed-off-by: Andiry Xu <jix024@cs.ucsd.edu>
Add setup bankshot2 script

Signed-off-by: Andiry Xu <jix024@cs.ucsd.edu>
write to backing store - not working right now.

Signed-off-by: Andiry Xu <jix024@cs.ucsd.edu>
Fix for Makefile

Signed-off-by: Andiry Xu <jix024@cs.ucsd.edu>
Basically works with Ext2