45 					       struct dlm_lock *lock, int flags);
49 static void dlm_lock_detach_lockres(struct dlm_lock *lock);
74 				  struct dlm_lock *lock)  in dlm_can_grant_new_lock()  argument
79 		if (!dlm_lock_compatible(tmplock->ml.type, lock->ml.type))  in dlm_can_grant_new_lock()
84 		if (!dlm_lock_compatible(tmplock->ml.type, lock->ml.type))  in dlm_can_grant_new_lock()
87 					 lock->ml.type))  in dlm_can_grant_new_lock()
103 				      struct dlm_lock *lock, int flags)  in dlmlock_master()  argument
108 	mlog(0, "type=%d\n", lock->ml.type);  in dlmlock_master()
115 	    lock->ml.node != dlm->node_num) {  in dlmlock_master()
124 	if (dlm_can_grant_new_lock(res, lock)) {  in dlmlock_master()
127 		lock->lksb->status = DLM_NORMAL;  in dlmlock_master()
129 		dlm_lock_get(lock);  in dlmlock_master()
130 		list_add_tail(&lock->list, &res->granted);  in dlmlock_master()
144 			     lock->ml.node);  in dlmlock_master()
155 				     lock->ml.node);  in dlmlock_master()
159 			dlm_lock_get(lock);  in dlmlock_master()
160 			list_add_tail(&lock->list, &res->blocked);  in dlmlock_master()
170 		dlm_queue_ast(dlm, lock);  in dlmlock_master()
182 			     struct dlm_lock *lock)  in dlm_revert_pending_lock()  argument
185 	list_del_init(&lock->list);  in dlm_revert_pending_lock()
186 	lock->lksb->flags &= ~DLM_LKSB_GET_LVB;  in dlm_revert_pending_lock()
199 				      struct dlm_lock *lock, int flags)  in dlmlock_remote()  argument
205 	     lock->ml.type, res->lockname.len,  in dlmlock_remote()
221 	dlm_lock_get(lock);  in dlmlock_remote()
222 	list_add_tail(&lock->list, &res->blocked);  in dlmlock_remote()
223 	lock->lock_pending = 1;  in dlmlock_remote()
228 	status = dlm_send_remote_lock_request(dlm, res, lock, flags);  in dlmlock_remote()
232 	lock->lock_pending = 0;  in dlmlock_remote()
253 		dlm_revert_pending_lock(res, lock);  in dlmlock_remote()
254 		dlm_lock_put(lock);  in dlmlock_remote()
264 		list_move_tail(&lock->list, &res->granted);  in dlmlock_remote()
285 					       struct dlm_lock *lock, int flags)  in dlm_send_remote_lock_request()  argument
293 	create.requested_type = lock->ml.type;  in dlm_send_remote_lock_request()
294 	create.cookie = lock->ml.cookie;  in dlm_send_remote_lock_request()
324 void dlm_lock_get(struct dlm_lock *lock)  in dlm_lock_get()  argument
326 	kref_get(&lock->lock_refs);  in dlm_lock_get()
329 void dlm_lock_put(struct dlm_lock *lock)  in dlm_lock_put()  argument
331 	kref_put(&lock->lock_refs, dlm_lock_release);  in dlm_lock_put()
336 	struct dlm_lock *lock;  in dlm_lock_release()  local
338 	lock = container_of(kref, struct dlm_lock, lock_refs);  in dlm_lock_release()
340 	BUG_ON(!list_empty(&lock->list));  in dlm_lock_release()
341 	BUG_ON(!list_empty(&lock->ast_list));  in dlm_lock_release()
342 	BUG_ON(!list_empty(&lock->bast_list));  in dlm_lock_release()
343 	BUG_ON(lock->ast_pending);  in dlm_lock_release()
344 	BUG_ON(lock->bast_pending);  in dlm_lock_release()
346 	dlm_lock_detach_lockres(lock);  in dlm_lock_release()
348 	if (lock->lksb_kernel_allocated) {  in dlm_lock_release()
350 		kfree(lock->lksb);  in dlm_lock_release()
352 	kmem_cache_free(dlm_lock_cache, lock);  in dlm_lock_release()
356 void dlm_lock_attach_lockres(struct dlm_lock *lock,  in dlm_lock_attach_lockres()  argument
360 	lock->lockres = res;  in dlm_lock_attach_lockres()
364 static void dlm_lock_detach_lockres(struct dlm_lock *lock)  in dlm_lock_detach_lockres()  argument
368 	res = lock->lockres;  in dlm_lock_detach_lockres()
370 		lock->lockres = NULL;  in dlm_lock_detach_lockres()
408 	struct dlm_lock *lock;  in dlm_new_lock()  local
411 	lock = kmem_cache_zalloc(dlm_lock_cache, GFP_NOFS);  in dlm_new_lock()
412 	if (!lock)  in dlm_new_lock()
419 			kmem_cache_free(dlm_lock_cache, lock);  in dlm_new_lock()
425 	dlm_init_lock(lock, type, node, cookie);  in dlm_new_lock()
427 		lock->lksb_kernel_allocated = 1;  in dlm_new_lock()
428 	lock->lksb = lksb;  in dlm_new_lock()
429 	lksb->lockid = lock;  in dlm_new_lock()
430 	return lock;  in dlm_new_lock()
547 	struct dlm_lock *lock = NULL;  in dlmlock()  local
586 		lock = lksb->lockid;  in dlmlock()
587 		if (!lock) {  in dlmlock()
593 		res = lock->lockres;  in dlmlock()
606 		if (lock->lksb != lksb || lock->ast != ast ||  in dlmlock()
607 		    lock->bast != bast || lock->astdata != data) {  in dlmlock()
612 			     "astdata=%p\n", lock->lksb, lock->ast,  in dlmlock()
613 			     lock->bast, lock->astdata);  in dlmlock()
620 			status = dlmconvert_master(dlm, res, lock, flags, mode);  in dlmlock()
622 			status = dlmconvert_remote(dlm, res, lock, flags, mode);  in dlmlock()
651 		lock = dlm_new_lock(mode, dlm->node_num, tmpcookie, lksb);  in dlmlock()
652 		if (!lock) {  in dlmlock()
669 		mlog(0, "creating lock: lock=%p res=%p\n", lock, res);  in dlmlock()
671 		dlm_lock_attach_lockres(lock, res);  in dlmlock()
672 		lock->ast = ast;  in dlmlock()
673 		lock->bast = bast;  in dlmlock()
674 		lock->astdata = data;  in dlmlock()
686 				lock->lksb->flags |= DLM_LKSB_GET_LVB;  in dlmlock()
691 			status = dlmlock_master(dlm, res, lock, flags);  in dlmlock()
693 			status = dlmlock_remote(dlm, res, lock, flags);  in dlmlock()
721 			lock->lksb->flags &= ~DLM_LKSB_GET_LVB;  in dlmlock()
730 		if (lock && !convert)  in dlmlock()
731 			dlm_lock_put(lock);  in dlmlock()