dlm: add recovery callbacks
These new callbacks notify the dlm user about lock recovery.
GFS2, and possibly others, need to be aware of when the dlm
will be doing lock recovery for a failed lockspace member.
In the past, this coordination has been done between dlm and
file system daemons in userspace, which then direct their
kernel counterparts. These callbacks allow the same
coordination directly, and more simply.
Signed-off-by: David Teigland <teigland@redhat.com>
diff --git a/fs/dlm/dlm_internal.h b/fs/dlm/dlm_internal.h
index f4d132c..3a564d1 100644
--- a/fs/dlm/dlm_internal.h
+++ b/fs/dlm/dlm_internal.h
@@ -2,7 +2,7 @@
*******************************************************************************
**
** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
-** Copyright (C) 2004-2010 Red Hat, Inc. All rights reserved.
+** Copyright (C) 2004-2011 Red Hat, Inc. All rights reserved.
**
** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions
@@ -119,28 +119,18 @@
int weight;
int slot;
int slot_prev;
+ int comm_seq;
uint32_t generation;
};
/*
- * low nodeid saves array of these in ls_slots
- */
-
-struct dlm_slot {
- int nodeid;
- int slot;
-};
-
-/*
* Save and manage recovery state for a lockspace.
*/
struct dlm_recover {
struct list_head list;
- int *nodeids; /* nodeids of all members */
- int node_count;
- int *new; /* nodeids of new members */
- int new_count;
+ struct dlm_config_node *nodes;
+ int nodes_count;
uint64_t seq;
};
@@ -584,6 +574,9 @@
struct list_head ls_root_list; /* root resources */
struct rw_semaphore ls_root_sem; /* protect root_list */
+ const struct dlm_lockspace_ops *ls_ops;
+ void *ls_ops_arg;
+
int ls_namelen;
char ls_name[1];
};