33 	struct io_cq *icq = container_of(head, struct io_cq, __rcu_head);  in icq_free_icq_rcu()  local
35 	kmem_cache_free(icq->__rcu_icq_cache, icq);  in icq_free_icq_rcu()
39 static void ioc_exit_icq(struct io_cq *icq)  in ioc_exit_icq()  argument
41 	struct elevator_type *et = icq->q->elevator->type;  in ioc_exit_icq()
43 	if (icq->flags & ICQ_EXITED)  in ioc_exit_icq()
47 		et->ops.elevator_exit_icq_fn(icq);  in ioc_exit_icq()
49 	icq->flags |= ICQ_EXITED;  in ioc_exit_icq()
53 static void ioc_destroy_icq(struct io_cq *icq)  in ioc_destroy_icq()  argument
55 	struct io_context *ioc = icq->ioc;  in ioc_destroy_icq()
56 	struct request_queue *q = icq->q;  in ioc_destroy_icq()
62 	radix_tree_delete(&ioc->icq_tree, icq->q->id);  in ioc_destroy_icq()
63 	hlist_del_init(&icq->ioc_node);  in ioc_destroy_icq()
64 	list_del_init(&icq->q_node);  in ioc_destroy_icq()
71 	if (rcu_access_pointer(ioc->icq_hint) == icq)  in ioc_destroy_icq()
74 	ioc_exit_icq(icq);  in ioc_destroy_icq()
80 	icq->__rcu_icq_cache = et->icq_cache;  in ioc_destroy_icq()
81 	call_rcu(&icq->__rcu_head, icq_free_icq_rcu);  in ioc_destroy_icq()
103 		struct io_cq *icq = hlist_entry(ioc->icq_list.first,  in ioc_release_fn()  local
105 		struct request_queue *q = icq->q;  in ioc_release_fn()
108 			ioc_destroy_icq(icq);  in ioc_release_fn()
168 	struct io_cq *icq;  in put_io_context_active()  local
182 	hlist_for_each_entry(icq, &ioc->icq_list, ioc_node) {  in put_io_context_active()
183 		if (icq->flags & ICQ_EXITED)  in put_io_context_active()
185 		if (spin_trylock(icq->q->queue_lock)) {  in put_io_context_active()
186 			ioc_exit_icq(icq);  in put_io_context_active()
187 			spin_unlock(icq->q->queue_lock);  in put_io_context_active()
224 		struct io_cq *icq = list_entry(q->icq_list.next,  in ioc_clear_queue()  local
226 		struct io_context *ioc = icq->ioc;  in ioc_clear_queue()
229 		ioc_destroy_icq(icq);  in ioc_clear_queue()
319 	struct io_cq *icq;  in ioc_lookup_icq()  local
330 	icq = rcu_dereference(ioc->icq_hint);  in ioc_lookup_icq()
331 	if (icq && icq->q == q)  in ioc_lookup_icq()
334 	icq = radix_tree_lookup(&ioc->icq_tree, q->id);  in ioc_lookup_icq()
335 	if (icq && icq->q == q)  in ioc_lookup_icq()
336 		rcu_assign_pointer(ioc->icq_hint, icq);	/* allowed to race */  in ioc_lookup_icq()
338 		icq = NULL;  in ioc_lookup_icq()
341 	return icq;  in ioc_lookup_icq()
361 	struct io_cq *icq;  in ioc_create_icq()  local
364 	icq = kmem_cache_alloc_node(et->icq_cache, gfp_mask | __GFP_ZERO,  in ioc_create_icq()
366 	if (!icq)  in ioc_create_icq()
370 		kmem_cache_free(et->icq_cache, icq);  in ioc_create_icq()
374 	icq->ioc = ioc;  in ioc_create_icq()
375 	icq->q = q;  in ioc_create_icq()
376 	INIT_LIST_HEAD(&icq->q_node);  in ioc_create_icq()
377 	INIT_HLIST_NODE(&icq->ioc_node);  in ioc_create_icq()
383 	if (likely(!radix_tree_insert(&ioc->icq_tree, q->id, icq))) {  in ioc_create_icq()
384 		hlist_add_head(&icq->ioc_node, &ioc->icq_list);  in ioc_create_icq()
385 		list_add(&icq->q_node, &q->icq_list);  in ioc_create_icq()
387 			et->ops.elevator_init_icq_fn(icq);  in ioc_create_icq()
389 		kmem_cache_free(et->icq_cache, icq);  in ioc_create_icq()
390 		icq = ioc_lookup_icq(ioc, q);  in ioc_create_icq()
391 		if (!icq)  in ioc_create_icq()
398 	return icq;  in ioc_create_icq()