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ocfs2: Depend on configfs heartbeat items.

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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>
This commit is contained in:
Joel Becker
2007-06-14 21:40:49 -07:00
committed by Mark Fasheh
parent 631d1febab
commit 14829422be
7 changed files with 92 additions and 17 deletions
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10
fs/ocfs2/heartbeat.c
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@@ -157,16 +157,16 @@ int ocfs2_register_hb_callbacks(struct ocfs2_super *osb)
if (ocfs2_mount_local(osb))
return 0;
status = o2hb_register_callback(&osb->osb_hb_down);
status = o2hb_register_callback(osb->uuid_str, &osb->osb_hb_down);
if (status < 0) {
mlog_errno(status);
goto bail;
}
status = o2hb_register_callback(&osb->osb_hb_up);
status = o2hb_register_callback(osb->uuid_str, &osb->osb_hb_up);
if (status < 0) {
mlog_errno(status);
o2hb_unregister_callback(&osb->osb_hb_down);
o2hb_unregister_callback(osb->uuid_str, &osb->osb_hb_down);
}
bail:
@@ -178,8 +178,8 @@ void ocfs2_clear_hb_callbacks(struct ocfs2_super *osb)
if (ocfs2_mount_local(osb))
return;
o2hb_unregister_callback(&osb->osb_hb_down);
o2hb_unregister_callback(&osb->osb_hb_up);
o2hb_unregister_callback(osb->uuid_str, &osb->osb_hb_down);
o2hb_unregister_callback(osb->uuid_str, &osb->osb_hb_up);
}
void ocfs2_stop_heartbeat(struct ocfs2_super *osb)