34 	struct io_cq *icq = container_of(head, struct io_cq, __rcu_head);  in icq_free_icq_rcu()  local
36 	kmem_cache_free(icq->__rcu_icq_cache, icq);  in icq_free_icq_rcu()
43 static void ioc_exit_icq(struct io_cq *icq)  in ioc_exit_icq()  argument
45 	struct elevator_type *et = icq->q->elevator->type;  in ioc_exit_icq()
47 	if (icq->flags & ICQ_EXITED)  in ioc_exit_icq()
51 		et->ops.exit_icq(icq);  in ioc_exit_icq()
53 	icq->flags |= ICQ_EXITED;  in ioc_exit_icq()
60 static void ioc_destroy_icq(struct io_cq *icq)  in ioc_destroy_icq()  argument
62 	struct io_context *ioc = icq->ioc;  in ioc_destroy_icq()
63 	struct request_queue *q = icq->q;  in ioc_destroy_icq()
68 	radix_tree_delete(&ioc->icq_tree, icq->q->id);  in ioc_destroy_icq()
69 	hlist_del_init(&icq->ioc_node);  in ioc_destroy_icq()
70 	list_del_init(&icq->q_node);  in ioc_destroy_icq()
77 	if (rcu_access_pointer(ioc->icq_hint) == icq)  in ioc_destroy_icq()
80 	ioc_exit_icq(icq);  in ioc_destroy_icq()
86 	icq->__rcu_icq_cache = et->icq_cache;  in ioc_destroy_icq()
87 	call_rcu(&icq->__rcu_head, icq_free_icq_rcu);  in ioc_destroy_icq()
109 		struct io_cq *icq = hlist_entry(ioc->icq_list.first,  in ioc_release_fn()  local
111 		struct request_queue *q = icq->q;  in ioc_release_fn()
114 			ioc_destroy_icq(icq);  in ioc_release_fn()
173 	struct io_cq *icq;  in put_io_context_active()  local
186 	hlist_for_each_entry(icq, &ioc->icq_list, ioc_node) {  in put_io_context_active()
187 		if (icq->flags & ICQ_EXITED)  in put_io_context_active()
190 		ioc_exit_icq(icq);  in put_io_context_active()
216 		struct io_cq *icq = list_entry(icq_list->next,  in __ioc_clear_queue()  local
218 		struct io_context *ioc = icq->ioc;  in __ioc_clear_queue()
221 		ioc_destroy_icq(icq);  in __ioc_clear_queue()
327 	struct io_cq *icq;  in ioc_lookup_icq()  local
338 	icq = rcu_dereference(ioc->icq_hint);  in ioc_lookup_icq()
339 	if (icq && icq->q == q)  in ioc_lookup_icq()
342 	icq = radix_tree_lookup(&ioc->icq_tree, q->id);  in ioc_lookup_icq()
343 	if (icq && icq->q == q)  in ioc_lookup_icq()
344 		rcu_assign_pointer(ioc->icq_hint, icq);	/* allowed to race */  in ioc_lookup_icq()
346 		icq = NULL;  in ioc_lookup_icq()
349 	return icq;  in ioc_lookup_icq()
369 	struct io_cq *icq;  in ioc_create_icq()  local
372 	icq = kmem_cache_alloc_node(et->icq_cache, gfp_mask | __GFP_ZERO,  in ioc_create_icq()
374 	if (!icq)  in ioc_create_icq()
378 		kmem_cache_free(et->icq_cache, icq);  in ioc_create_icq()
382 	icq->ioc = ioc;  in ioc_create_icq()
383 	icq->q = q;  in ioc_create_icq()
384 	INIT_LIST_HEAD(&icq->q_node);  in ioc_create_icq()
385 	INIT_HLIST_NODE(&icq->ioc_node);  in ioc_create_icq()
391 	if (likely(!radix_tree_insert(&ioc->icq_tree, q->id, icq))) {  in ioc_create_icq()
392 		hlist_add_head(&icq->ioc_node, &ioc->icq_list);  in ioc_create_icq()
393 		list_add(&icq->q_node, &q->icq_list);  in ioc_create_icq()
395 			et->ops.init_icq(icq);  in ioc_create_icq()
397 		kmem_cache_free(et->icq_cache, icq);  in ioc_create_icq()
398 		icq = ioc_lookup_icq(ioc, q);  in ioc_create_icq()
399 		if (!icq)  in ioc_create_icq()
406 	return icq;  in ioc_create_icq()