495 			     int nsops, struct sem_undo *un, int pid)  in try_atomic_semop()  argument
515 			int undo = un->semadj[sop->sem_num] - sem_op;  in try_atomic_semop()
529 			un->semadj[sop->sem_num] -= sop->sem_op;  in try_atomic_semop()
872 	struct sem_undo *un, *tu;  in freeary()  local
880 	list_for_each_entry_safe(un, tu, &sma->list_id, list_id) {  in freeary()
881 		list_del(&un->list_id);  in freeary()
882 		spin_lock(&un->ulp->lock);  in freeary()
883 		un->semid = -1;  in freeary()
884 		list_del_rcu(&un->list_proc);  in freeary()
885 		spin_unlock(&un->ulp->lock);  in freeary()
886 		kfree_rcu(un, rcu);  in freeary()
1029 	struct sem_undo *un;  in semctl_setval()  local
1077 	list_for_each_entry(un, &sma->list_id, list_id)  in semctl_setval()
1078 		un->semadj[semnum] = 0;  in semctl_setval()
1164 		struct sem_undo *un;  in semctl_main()  local
1206 		list_for_each_entry(un, &sma->list_id, list_id) {  in semctl_main()
1208 				un->semadj[i] = 0;  in semctl_main()
1401 	struct sem_undo *un;  in __lookup_undo()  local
1403 	list_for_each_entry_rcu(un, &ulp->list_proc, list_proc) {  in __lookup_undo()
1404 		if (un->semid == semid)  in __lookup_undo()
1405 			return un;  in __lookup_undo()
1412 	struct sem_undo *un;  in lookup_undo()  local
1416 	un = __lookup_undo(ulp, semid);  in lookup_undo()
1417 	if (un) {  in lookup_undo()
1418 		list_del_rcu(&un->list_proc);  in lookup_undo()
1419 		list_add_rcu(&un->list_proc, &ulp->list_proc);  in lookup_undo()
1421 	return un;  in lookup_undo()
1439 	struct sem_undo *un, *new;  in find_alloc_undo()  local
1448 	un = lookup_undo(ulp, semid);  in find_alloc_undo()
1450 	if (likely(un!=NULL))  in find_alloc_undo()
1464 		un = ERR_PTR(-EIDRM);  in find_alloc_undo()
1483 		un = ERR_PTR(-EIDRM);  in find_alloc_undo()
1491 	un = lookup_undo(ulp, semid);  in find_alloc_undo()
1492 	if (un) {  in find_alloc_undo()
1504 	un = new;  in find_alloc_undo()
1510 	return un;  in find_alloc_undo()
1547 	struct sem_undo *un;  in SYSCALL_DEFINE4()  local
1596 		un = find_alloc_undo(ns, semid);  in SYSCALL_DEFINE4()
1597 		if (IS_ERR(un)) {  in SYSCALL_DEFINE4()
1598 			error = PTR_ERR(un);  in SYSCALL_DEFINE4()
1602 		un = NULL;  in SYSCALL_DEFINE4()
1634 	if (un && un->semid == -1)  in SYSCALL_DEFINE4()
1637 	error = try_atomic_semop (sma, sops, nsops, un, task_tgid_vnr(current));  in SYSCALL_DEFINE4()
1651 	queue.undo = un;  in SYSCALL_DEFINE4()
1803 		struct sem_undo *un;  in exit_sem()  local
1808 		un = list_entry_rcu(ulp->list_proc.next,  in exit_sem()
1810 		if (&un->list_proc == &ulp->list_proc)  in exit_sem()
1813 			semid = un->semid;  in exit_sem()
1820 		sma = sem_obtain_object_check(tsk->nsproxy->ipc_ns, un->semid);  in exit_sem()
1828 		un = __lookup_undo(ulp, semid);  in exit_sem()
1829 		if (un == NULL) {  in exit_sem()
1840 		list_del(&un->list_id);  in exit_sem()
1843 		list_del_rcu(&un->list_proc);  in exit_sem()
1849 			if (un->semadj[i]) {  in exit_sem()
1850 				semaphore->semval += un->semadj[i];  in exit_sem()
1878 		kfree_rcu(un, rcu);  in exit_sem()