ocfs2/dlm/dlmunlock.c

43 					      struct dlm_lock *lock,
48 					      struct dlm_lock *lock,
54 						 struct dlm_lock *lock,
67  * So to unlock a converting lock, you must first cancel the
76  *   taken:         res->spinlock and lock->spinlock taken and dropped
79  * all callers should have taken an extra ref on lock coming in
83 					struct dlm_lock *lock,
103 	/* We want to be sure that we're not freeing a lock
105 	in_use = !list_empty(&lock->ast_list);
125 	spin_lock(&lock->spinlock);
138 	 * LKM_CANCEL and the lock queue state */
140 		status = dlm_get_cancel_actions(dlm, res, lock, lksb, &actions);
142 		status = dlm_get_unlock_actions(dlm, res, lock, lksb, &actions);
161 			lock->cancel_pending = 1;
163 			lock->unlock_pending = 1;
164 		spin_unlock(&lock->spinlock);
166 		status = dlm_send_remote_unlock_request(dlm, res, lock, lksb,
169 		spin_lock(&lock->spinlock);
170 		/* if the master told us the lock was already granted,
194 			lock->cancel_pending = 0;
196 			if (!lock->unlock_pending)
199 				lock->unlock_pending = 0;
203 	/* get an extra ref on lock.  if we are just switching
204 	 * lists here, we dont want the lock to go away. */
205 	dlm_lock_get(lock);
208 		list_del_init(&lock->list);
209 		dlm_lock_put(lock);
212 		dlm_lock_get(lock);
213 		list_add_tail(&lock->list, &res->granted);
218 		lock->ml.convert_type = LKM_IVMODE;
221 	/* remove the extra ref on lock */
222 	dlm_lock_put(lock);
226 	if (!dlm_lock_on_list(&res->converting, lock))
227 		BUG_ON(lock->ml.convert_type != LKM_IVMODE);
229 		BUG_ON(lock->ml.convert_type == LKM_IVMODE);
230 	spin_unlock(&lock->spinlock);
237 		 * and the lock is already removed from grant list. We have to
249 		mlog(0, "lock %u:%llu should be gone now! refs=%d\n",
250 		     dlm_get_lock_cookie_node(be64_to_cpu(lock->ml.cookie)),
251 		     dlm_get_lock_cookie_seq(be64_to_cpu(lock->ml.cookie)),
252 		     kref_read(&lock->lock_refs)-1);
253 		dlm_lock_put(lock);
266 			       struct dlm_lock *lock)
270 	list_del_init(&lock->list);
274 			       struct dlm_lock *lock)
276 	list_move_tail(&lock->list, &res->granted);
277 	lock->ml.convert_type = LKM_IVMODE;
283 					  struct dlm_lock *lock,
288 	return dlmunlock_common(dlm, res, lock, lksb, flags, call_ast, 1);
293 					  struct dlm_lock *lock,
297 	return dlmunlock_common(dlm, res, lock, lksb, flags, call_ast, 0);
309 						 struct dlm_lock *lock,
336 	unlock.cookie = lock->ml.cookie;
346 		vec[1].iov_base = lock->lksb->lvb;
395 	struct dlm_lock *lock = NULL, *iter;
431 		/* We assume here that a no lock resource simply means
467 				lock = iter;
471 		if (lock)
477 	if (!lock) {
482 	/* lock was found on queue */
483 	lksb = lock->lksb;
485 	    lock->ml.type != LKM_EXMODE)
496 	status = dlmunlock_master(dlm, res, lock, lksb, flags, &ignore);
507 	if (!lock)
508 		mlog(ML_ERROR, "failed to find lock to unlock! "
513 		dlm_lock_put(lock);
527 					      struct dlm_lock *lock,
533 	if (dlm_lock_on_list(&res->blocked, lock)) {
538 	} else if (dlm_lock_on_list(&res->converting, lock)) {
545 	} else if (dlm_lock_on_list(&res->granted, lock)) {
550 		mlog(ML_ERROR, "lock to cancel is not on any list!\n");
559 					      struct dlm_lock *lock,
566 	if (!dlm_lock_on_list(&res->granted, lock)) {
571 		/* unlock granted lock */
589 	struct dlm_lock *lock = NULL;
612 	lock = lksb->lockid;
613 	BUG_ON(!lock);
614 	dlm_lock_get(lock);
616 	res = lock->lockres;
622 	mlog(0, "lock=%p res=%p\n", lock, res);
626 	if (flags & LKM_VALBLK && lock->ml.type != LKM_EXMODE)
631 		status = dlmunlock_master(dlm, res, lock, lksb, flags,
636 		status = dlmunlock_remote(dlm, res, lock, lksb, flags,
669 			 * since this lock has been removed from the
673 				   dlm_lock_basts_flushed(dlm, lock));
689 	dlm_lock_put(lock);