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2009-09-15Staging: cowloop: remove kernel version checksGreg Kroah-Hartman
Now that the code is in the kernel tree, remove the unneeded version checks. Cc: "H.J. Thomassen" <hjt@ATComputing.nl> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-15Staging: add cowloop to the buildGreg Kroah-Hartman
Now that the code can build, let's add it to the build system. Cc: "H.J. Thomassen" <hjt@ATComputing.nl> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-15Staging: cowloop: add TODO fileGreg Kroah-Hartman
Add a TODO file with a few things that needs to be fixed up. Cc: "H.J. Thomassen" <hjt@ATComputing.nl> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-15Staging: get cowloop to build properlyGreg Kroah-Hartman
There has been some block api changes since the last release of the cowloop code. This patch updates the code to properly build. Cc: "H.J. Thomassen" <hjt@ATComputing.nl> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-15Staging: add cowloop driverH.J. Thomassen
Cowloop is a "copy-on-write" pseudo block driver. It can be stacked on top of a "real" block driver, and catches all write operations on their way from the file systems layer above to the real driver below, effectively shielding the lower driver from those write accesses. The requests are then diverted to an ordinary file, located somewhere else (configurable). Later read requests are checked to see whether they can be serviced by the "real" block driver below, or must be pulled in from the diverted location. More information is on the project's website http://www.ATComputing.nl/cowloop/ From: "H.J. Thomassen" <hjt@ATComputing.nl> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>