Add code for locking individual volumes on disk
This adds the necessary APIs and associated changes to lock (on disk) an
individual volume on a particular partition. Nothing yet calls these new
functions.
Change-Id: Ibfa00293e7411f3f48eabdecb13b7e80e126a1ff
Reviewed-on: http://gerrit.openafs.org/1405
Tested-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Alistair Ferguson <alistair.ferguson@mac.com>
Tested-by: Derrick Brashear <shadow@dementia.org>
Reviewed-by: Derrick Brashear <shadow@dementia.org>