54 			   struct dlm_lock *lock);
55 static int dlm_should_cancel_bast(struct dlm_ctxt *dlm, struct dlm_lock *lock);
66 static int dlm_should_cancel_bast(struct dlm_ctxt *dlm, struct dlm_lock *lock)  in dlm_should_cancel_bast()  argument
69 	assert_spin_locked(&lock->spinlock);  in dlm_should_cancel_bast()
71 	if (lock->ml.highest_blocked == LKM_IVMODE)  in dlm_should_cancel_bast()
73 	BUG_ON(lock->ml.highest_blocked == LKM_NLMODE);  in dlm_should_cancel_bast()
75 	if (lock->bast_pending &&  in dlm_should_cancel_bast()
76 	    list_empty(&lock->bast_list))  in dlm_should_cancel_bast()
80 	if (lock->ml.type == LKM_EXMODE)  in dlm_should_cancel_bast()
83 	else if (lock->ml.type == LKM_NLMODE)  in dlm_should_cancel_bast()
86 	else if (lock->ml.highest_blocked != LKM_EXMODE)  in dlm_should_cancel_bast()
93 static void __dlm_queue_ast(struct dlm_ctxt *dlm, struct dlm_lock *lock)  in __dlm_queue_ast()  argument
98 	BUG_ON(!lock);  in __dlm_queue_ast()
101 	if (!list_empty(&lock->ast_list)) {  in __dlm_queue_ast()
103 		     lock->ast_pending, lock->ml.type);  in __dlm_queue_ast()
106 	BUG_ON(!list_empty(&lock->ast_list));  in __dlm_queue_ast()
107 	if (lock->ast_pending)  in __dlm_queue_ast()
111 	dlm_lock_get(lock);  in __dlm_queue_ast()
112 	spin_lock(&lock->spinlock);  in __dlm_queue_ast()
115 	if (dlm_should_cancel_bast(dlm, lock)) {  in __dlm_queue_ast()
116 		struct dlm_lock_resource *res = lock->lockres;  in __dlm_queue_ast()
119 		lock->bast_pending = 0;  in __dlm_queue_ast()
120 		list_del_init(&lock->bast_list);  in __dlm_queue_ast()
121 		lock->ml.highest_blocked = LKM_IVMODE;  in __dlm_queue_ast()
125 		dlm_lock_put(lock);  in __dlm_queue_ast()
133 	list_add_tail(&lock->ast_list, &dlm->pending_asts);  in __dlm_queue_ast()
134 	lock->ast_pending = 1;  in __dlm_queue_ast()
135 	spin_unlock(&lock->spinlock);  in __dlm_queue_ast()
138 void dlm_queue_ast(struct dlm_ctxt *dlm, struct dlm_lock *lock)  in dlm_queue_ast()  argument
143 	BUG_ON(!lock);  in dlm_queue_ast()
146 	__dlm_queue_ast(dlm, lock);  in dlm_queue_ast()
151 static void __dlm_queue_bast(struct dlm_ctxt *dlm, struct dlm_lock *lock)  in __dlm_queue_bast()  argument
156 	BUG_ON(!lock);  in __dlm_queue_bast()
159 	BUG_ON(!list_empty(&lock->bast_list));  in __dlm_queue_bast()
160 	if (lock->bast_pending)  in __dlm_queue_bast()
164 	dlm_lock_get(lock);  in __dlm_queue_bast()
165 	spin_lock(&lock->spinlock);  in __dlm_queue_bast()
166 	list_add_tail(&lock->bast_list, &dlm->pending_basts);  in __dlm_queue_bast()
167 	lock->bast_pending = 1;  in __dlm_queue_bast()
168 	spin_unlock(&lock->spinlock);  in __dlm_queue_bast()
171 void dlm_queue_bast(struct dlm_ctxt *dlm, struct dlm_lock *lock)  in dlm_queue_bast()  argument
176 	BUG_ON(!lock);  in dlm_queue_bast()
179 	__dlm_queue_bast(dlm, lock);  in dlm_queue_bast()
184 			   struct dlm_lock *lock)  in dlm_update_lvb()  argument
186 	struct dlm_lockstatus *lksb = lock->lksb;  in dlm_update_lvb()
196 				  lock->ml.node == dlm->node_num ? "master" :  in dlm_update_lvb()
215 		      struct dlm_lock *lock)  in dlm_do_local_ast()  argument
222 	lksb = lock->lksb;  in dlm_do_local_ast()
223 	fn = lock->ast;  in dlm_do_local_ast()
224 	BUG_ON(lock->ml.node != dlm->node_num);  in dlm_do_local_ast()
226 	dlm_update_lvb(dlm, res, lock);  in dlm_do_local_ast()
227 	(*fn)(lock->astdata);  in dlm_do_local_ast()
232 		      struct dlm_lock *lock)  in dlm_do_remote_ast()  argument
240 	lksb = lock->lksb;  in dlm_do_remote_ast()
241 	BUG_ON(lock->ml.node == dlm->node_num);  in dlm_do_remote_ast()
244 	dlm_update_lvb(dlm, res, lock);  in dlm_do_remote_ast()
248 	ret = dlm_send_proxy_ast(dlm, res, lock, lksbflags);  in dlm_do_remote_ast()
253 		       struct dlm_lock *lock, int blocked_type)  in dlm_do_local_bast()  argument
255 	dlm_bastlockfunc_t *fn = lock->bast;  in dlm_do_local_bast()
258 	BUG_ON(lock->ml.node != dlm->node_num);  in dlm_do_local_bast()
260 	(*fn)(lock->astdata, blocked_type);  in dlm_do_local_bast()
272 	struct dlm_lock *lock = NULL;  in dlm_proxy_ast_handler()  local
354 	lock = NULL;  in dlm_proxy_ast_handler()
356 		lock = list_entry (iter, struct dlm_lock, list);  in dlm_proxy_ast_handler()
357 		if (lock->ml.cookie == cookie)  in dlm_proxy_ast_handler()
368 		lock = list_entry (iter, struct dlm_lock, list);  in dlm_proxy_ast_handler()
369 		if (lock->ml.cookie == cookie)  in dlm_proxy_ast_handler()
388 		list_move_tail(&lock->list, &res->granted);  in dlm_proxy_ast_handler()
390 		     "convert_type=%d\n", lock->ml.type, lock->ml.convert_type);  in dlm_proxy_ast_handler()
391 		if (lock->ml.convert_type != LKM_IVMODE) {  in dlm_proxy_ast_handler()
392 			lock->ml.type = lock->ml.convert_type;  in dlm_proxy_ast_handler()
393 			lock->ml.convert_type = LKM_IVMODE;  in dlm_proxy_ast_handler()
398 		lock->lksb->status = DLM_NORMAL;  in dlm_proxy_ast_handler()
402 			BUG_ON(!(lock->lksb->flags & DLM_LKSB_GET_LVB));  in dlm_proxy_ast_handler()
403 			memcpy(lock->lksb->lvb, past->lvb, DLM_LVB_LEN);  in dlm_proxy_ast_handler()
409 		dlm_do_local_ast(dlm, res, lock);  in dlm_proxy_ast_handler()
411 		dlm_do_local_bast(dlm, res, lock, past->blocked_type);  in dlm_proxy_ast_handler()
424 			   struct dlm_lock *lock, int msg_type,  in dlm_send_proxy_ast_msg()  argument
434 		   res->lockname.len, res->lockname.name, lock->ml.node,  in dlm_send_proxy_ast_msg()
443 	past.cookie = lock->ml.cookie;  in dlm_send_proxy_ast_msg()
451 		vec[1].iov_base = lock->lksb->lvb;  in dlm_send_proxy_ast_msg()
456 				     lock->ml.node, &status);  in dlm_send_proxy_ast_msg()
462 			     "node is dead!\n", lock->ml.node);  in dlm_send_proxy_ast_msg()
466 			     "DLM_MIGRATING!\n", lock->ml.node);  in dlm_send_proxy_ast_msg()
470 			     lock->ml.node, status);  in dlm_send_proxy_ast_msg()