151 	struct sem_undo_list	*ulp;		/* back ptr to sem_undo_list */  member
1155 		spin_lock(&un->ulp->lock);  in freeary()
1158 		spin_unlock(&un->ulp->lock);  in freeary()
1869 static struct sem_undo *__lookup_undo(struct sem_undo_list *ulp, int semid)  in __lookup_undo()  argument
1873 	list_for_each_entry_rcu(un, &ulp->list_proc, list_proc,  in __lookup_undo()
1874 				spin_is_locked(&ulp->lock)) {  in __lookup_undo()
1881 static struct sem_undo *lookup_undo(struct sem_undo_list *ulp, int semid)  in lookup_undo()  argument
1885 	assert_spin_locked(&ulp->lock);  in lookup_undo()
1887 	un = __lookup_undo(ulp, semid);  in lookup_undo()
1890 		list_add_rcu(&un->list_proc, &ulp->list_proc);  in lookup_undo()
1909 	struct sem_undo_list *ulp;  in find_alloc_undo()  local
1913 	error = get_undo_list(&ulp);  in find_alloc_undo()
1918 	spin_lock(&ulp->lock);  in find_alloc_undo()
1919 	un = lookup_undo(ulp, semid);  in find_alloc_undo()
1920 	spin_unlock(&ulp->lock);  in find_alloc_undo()
1957 	spin_lock(&ulp->lock);  in find_alloc_undo()
1962 	un = lookup_undo(ulp, semid);  in find_alloc_undo()
1964 		spin_unlock(&ulp->lock);  in find_alloc_undo()
1969 	new->ulp = ulp;  in find_alloc_undo()
1971 	assert_spin_locked(&ulp->lock);  in find_alloc_undo()
1972 	list_add_rcu(&new->list_proc, &ulp->list_proc);  in find_alloc_undo()
1976 	spin_unlock(&ulp->lock);  in find_alloc_undo()
2337 	struct sem_undo_list *ulp;  in exit_sem()  local
2339 	ulp = tsk->sysvsem.undo_list;  in exit_sem()
2340 	if (!ulp)  in exit_sem()
2344 	if (!refcount_dec_and_test(&ulp->refcnt))  in exit_sem()
2356 		un = list_entry_rcu(ulp->list_proc.next,  in exit_sem()
2358 		if (&un->list_proc == &ulp->list_proc) {  in exit_sem()
2360 			 * We must wait for freeary() before freeing this ulp,  in exit_sem()
2365 			spin_lock(&ulp->lock);  in exit_sem()
2366 			spin_unlock(&ulp->lock);  in exit_sem()
2370 		spin_lock(&ulp->lock);  in exit_sem()
2372 		spin_unlock(&ulp->lock);  in exit_sem()
2394 		un = __lookup_undo(ulp, semid);  in exit_sem()
2408 		spin_lock(&ulp->lock);  in exit_sem()
2410 		spin_unlock(&ulp->lock);  in exit_sem()
2445 	kfree(ulp);  in exit_sem()