6  * defines domain join / leave apis
130  * be used to determine what a running domain is actually using.
136  * 	- Message DLM_BEGIN_EXIT_DOMAIN_MSG added to mark start of exit domain
263 static struct dlm_ctxt * __dlm_lookup_domain_full(const char *domain, int len)  in __dlm_lookup_domain_full()  argument
271 	 * but domain may not be! */  in __dlm_lookup_domain_full()
275 		    memcmp(tmp->name, domain, len)==0)  in __dlm_lookup_domain_full()
283 /* For null terminated domain strings ONLY */
284 static struct dlm_ctxt * __dlm_lookup_domain(const char *domain)  in __dlm_lookup_domain()  argument
288 	return __dlm_lookup_domain_full(domain, strlen(domain));  in __dlm_lookup_domain()
293  * 1) the domain does not exist
294  * 2) the domain exists and it's state is "joined" */
295 static int dlm_wait_on_domain_helper(const char *domain)  in dlm_wait_on_domain_helper()  argument
302 	tmp = __dlm_lookup_domain(domain);  in dlm_wait_on_domain_helper()
345 	mlog(0, "freeing memory from domain %s\n", dlm->name);  in dlm_ctxt_release()
421 	/* We've left the domain. Now we can take ourselves out of the  in dlm_complete_dlm_shutdown()
428 	/* Wake up anyone waiting for us to remove this domain */  in dlm_complete_dlm_shutdown()
440 	mlog(0, "Migrating locks from domain %s\n", dlm->name);  in dlm_migrate_all_locks()
485 	mlog(0, "DONE Migrating locks from domain %s\n", dlm->name);  in dlm_migrate_all_locks()
511 	mlog(0, "%s: Node %u sent a begin exit domain message\n", dlm->name, node);  in dlm_begin_exit_domain_handler()
577 	printk(KERN_NOTICE "o2dlm: Node %u leaves domain %s ", node, dlm->name);  in dlm_exit_domain_handler()
596 	mlog(0, "%s: Sending domain exit message %u to node %u\n", dlm->name,  in dlm_send_one_domain_exit()
605 		mlog(ML_ERROR, "Error %d sending domain exit message %u "  in dlm_send_one_domain_exit()
606 		     "to node %u on domain %s\n", status, msg_type, node,  in dlm_send_one_domain_exit()
616 	/* Support for begin exit domain was added in 1.2 */  in dlm_begin_exit_domain()
651 	/* Clear ourselves from the domain map */  in dlm_leave_domain()
670 			mlog(ML_NOTICE, "Error %d sending domain exit message "  in dlm_leave_domain()
730 		 * domain. Don't use DLM_CTXT_LEAVING yet as we still  in dlm_unregister_domain()
731 		 * want new domain joins to communicate with us at  in dlm_unregister_domain()
740 		mlog(0, "shutting down domain %s\n", dlm->name);  in dlm_unregister_domain()
762 		printk(KERN_NOTICE "o2dlm: Leaving domain %s\n", dlm->name);  in dlm_unregister_domain()
846 	mlog(0, "node %u wants to join domain %s\n", query->node_idx,  in dlm_query_join_handler()
847 		  query->domain);  in dlm_query_join_handler()
865 	dlm = __dlm_lookup_domain_full(query->domain, query->name_len);  in dlm_query_join_handler()
889 	 * to be put in someone's domain map.  in dlm_query_join_handler()
915 			     "is still in the domain! needs recovery?\n",  in dlm_query_join_handler()
919 			/* Alright we're fully a part of this domain  in dlm_query_join_handler()
961 	mlog(0, "node %u asserts join on domain %s\n", assert->node_idx,  in dlm_assert_joined_handler()
962 		  assert->domain);  in dlm_assert_joined_handler()
965 	dlm = __dlm_lookup_domain_full(assert->domain, assert->name_len);  in dlm_assert_joined_handler()
971 		 * domain. Set him in the map and clean up our  in dlm_assert_joined_handler()
978 		printk(KERN_NOTICE "o2dlm: Node %u joins domain %s ",  in dlm_assert_joined_handler()
1003 			mlog(ML_ERROR, "Domain %s: Joining node %d has global "  in dlm_match_regions()
1012 		mlog(ML_ERROR, "Domain %s: Local node %d has global "  in dlm_match_regions()
1042 			mlog(ML_ERROR, "Domain %s: Region '%.*s' registered "  in dlm_match_regions()
1065 			mlog(ML_ERROR, "Domain %s: Region '%.*s' registered "  in dlm_match_regions()
1142 	mlog(0, "Node %u queries hb regions on domain %s\n", qr->qr_node,  in dlm_query_region_handler()
1157 		mlog(ML_ERROR, "Node %d queried hb regions on domain %s "  in dlm_query_region_handler()
1158 		     "before join domain\n", qr->qr_node, qr->qr_domain);  in dlm_query_region_handler()
1165 		mlog(ML_ERROR, "Node %d queried hb regions on domain %s "  in dlm_query_region_handler()
1174 		mlog(ML_ERROR, "Node %d queried hb regions on domain %s "  in dlm_query_region_handler()
1229 				mlog(ML_ERROR, "Domain %s: Node %d (%pI4:%u) "  in dlm_match_nodes()
1237 				mlog(ML_ERROR, "Domain %s: Node %d (%pI4:%u) "  in dlm_match_nodes()
1320 	mlog(0, "Node %u queries nodes on domain %s\n", qn->qn_nodenum,  in dlm_query_nodeinfo_handler()
1326 		mlog(ML_ERROR, "Node %d queried nodes on domain %s before "  in dlm_query_nodeinfo_handler()
1327 		     "join domain\n", qn->qn_nodenum, qn->qn_domain);  in dlm_query_nodeinfo_handler()
1334 		mlog(ML_ERROR, "Node %d queried nodes on domain %s but "  in dlm_query_nodeinfo_handler()
1343 		mlog(ML_ERROR, "Node %d queried nodes on domain %s "  in dlm_query_nodeinfo_handler()
1368 	mlog(0, "node %u cancels join on domain %s\n", cancel->node_idx,  in dlm_cancel_join_handler()
1369 		  cancel->domain);  in dlm_cancel_join_handler()
1372 	dlm = __dlm_lookup_domain_full(cancel->domain, cancel->name_len);  in dlm_cancel_join_handler()
1398 	memcpy(cancel_msg.domain, dlm->name, cancel_msg.name_len);  in dlm_send_one_join_cancel()
1465 	memcpy(join_msg.domain, dlm->name, join_msg.name_len);  in dlm_request_join()
1485 	    joined into the domain.  */  in dlm_request_join()
1542 	memcpy(assert_msg.domain, dlm->name, assert_msg.name_len);  in dlm_send_one_join_assert()
1670 	/* Yay, everyone agree's we can join the domain. My domain is  in dlm_try_to_join_domain()
1672 	 * yes_resp_map. Copy that into our domain map and send a join  in dlm_try_to_join_domain()
1700 	 * we're not in the domain. */  in dlm_try_to_join_domain()
1710 		printk(KERN_NOTICE "o2dlm: Joining domain %s ", dlm->name);  in dlm_try_to_join_domain()
1884 	mlog(0, "Join domain %s\n", dlm->name);  in dlm_join_domain()
1933 				mlog(ML_NOTICE, "Timed out joining dlm domain "  in dlm_join_domain()
1974 static struct dlm_ctxt *dlm_alloc_ctxt(const char *domain,  in dlm_alloc_ctxt()  argument
1987 	dlm->name = kstrdup(domain, GFP_KERNEL);  in dlm_alloc_ctxt()
2121  * dlm_register_domain: one-time setup per "domain".
2127 struct dlm_ctxt * dlm_register_domain(const char *domain,  in dlm_register_domain()  argument
2135 	if (strlen(domain) >= O2NM_MAX_NAME_LEN) {  in dlm_register_domain()
2137 		mlog(ML_ERROR, "domain name length too long\n");  in dlm_register_domain()
2141 	mlog(0, "register called for domain \"%s\"\n", domain);  in dlm_register_domain()
2153 	dlm = __dlm_lookup_domain(domain);  in dlm_register_domain()
2161 							 domain));  in dlm_register_domain()
2169 			     "compatible with already registered domain "  in dlm_register_domain()
2170 			     "\"%s\"\n", domain);  in dlm_register_domain()
2188 		new_ctxt = dlm_alloc_ctxt(domain, key);  in dlm_register_domain()
2201 	/* add the new domain */  in dlm_register_domain()
2285 /* Domain eviction callback handling.
2290  * evict a node from it's domain *before* heartbeat fires, a similar
2293 /* Eviction is not expected to happen often, so a per-domain lock is