drivers/staging/cowloop/Kconfig

   1 config COWLOOP
   2         tristate "copy-on-write pseudo Block Driver"
   3         depends on BLOCK
   4         default n
   5         ---help---
   6           Cowloop is a "copy-on-write" pseudo block driver. It can be
   7           stacked on top of a "real" block driver, and catches all write
   8           operations on their way from the file systems layer above to
   9           the real driver below, effectively shielding the lower driver
  10           from those write accesses. The requests are then diverted to
  11           an ordinary file, located somewhere else (configurable). Later
  12           read requests are checked to see whether they can be serviced
  13           by the "real" block driver below, or must be pulled in from
  14           the diverted location. More information and userspace tools to
  15           use the driver are on the project's website
  16           http://www.ATComputing.nl/cowloop/