Further reduce extended attribute reads/writes

More refactoring towards reducing the number of extended attribute
reads/writes to the file system. See BZ 868120:
    http://bugzilla.redhat.com/show_bug.cgi?id=868120

Basically the redundant routines restore_object, restore_account and
restore_container have been collapsed to one routine, restore_metadata, which
will only write out metadata if the new metadata is different from what was
originally read.

Along with these changes come a set of unit tests for all the functions
related to the routines that are in this module in the call tree where
restore_metadata is invoked.

Change-Id: I957ee2f8646cbe6df4d4420d3bdfb1f6ac62bdd2
BUG: 868120
Signed-off-by: Peter Portante <peter.portante@redhat.com>
Reviewed-on: http://review.gluster.org/4111
Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
Tested-by: Anand Avati <avati@redhat.com>

0 files changed, 0 insertions, 0 deletions