tree 4a8c931b431653aa5e35523f43ebcddffa8641b8
parent 631d1febab8e546e3bb800bdfe2c212b8adf87de
author Joel Becker <joel.becker@oracle.com> 1181882449 -0700
committer Mark Fasheh <mark.fasheh@oracle.com> 1184113180 -0700

ocfs2: Depend on configfs heartbeat items.

ocfs2 mounts require a heartbeat region.  Use the new configfs_depend_item()
facility to actually depend on them so they can't go away from under us.

First, teach cluster/nodemanager.c to depend an item on the o2cb subsystem.
Then teach o2hb_register_callbacks to take a UUID and depend on the
appropriate region.  Finally, teach all users of o2hb to pass a UUID or
NULL if they don't require a pin.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>