22 	struct netfs_io_request *rreq;  in netfs_alloc_request()  local
25 	rreq = kzalloc(sizeof(struct netfs_io_request), GFP_KERNEL);  in netfs_alloc_request()
26 	if (!rreq)  in netfs_alloc_request()
29 	rreq->start	= start;  in netfs_alloc_request()
30 	rreq->len	= len;  in netfs_alloc_request()
31 	rreq->origin	= origin;  in netfs_alloc_request()
32 	rreq->netfs_ops	= ctx->ops;  in netfs_alloc_request()
33 	rreq->mapping	= mapping;  in netfs_alloc_request()
34 	rreq->inode	= inode;  in netfs_alloc_request()
35 	rreq->i_size	= i_size_read(inode);  in netfs_alloc_request()
36 	rreq->debug_id	= atomic_inc_return(&debug_ids);  in netfs_alloc_request()
37 	INIT_LIST_HEAD(&rreq->subrequests);  in netfs_alloc_request()
38 	refcount_set(&rreq->ref, 1);  in netfs_alloc_request()
39 	__set_bit(NETFS_RREQ_IN_PROGRESS, &rreq->flags);  in netfs_alloc_request()
40 	if (rreq->netfs_ops->init_request) {  in netfs_alloc_request()
41 		ret = rreq->netfs_ops->init_request(rreq, file);  in netfs_alloc_request()
43 			kfree(rreq);  in netfs_alloc_request()
49 	return rreq;  in netfs_alloc_request()
52 void netfs_get_request(struct netfs_io_request *rreq, enum netfs_rreq_ref_trace what)  in netfs_get_request()  argument
56 	__refcount_inc(&rreq->ref, &r);  in netfs_get_request()
57 	trace_netfs_rreq_ref(rreq->debug_id, r + 1, what);  in netfs_get_request()
60 void netfs_clear_subrequests(struct netfs_io_request *rreq, bool was_async)  in netfs_clear_subrequests()  argument
64 	while (!list_empty(&rreq->subrequests)) {  in netfs_clear_subrequests()
65 		subreq = list_first_entry(&rreq->subrequests,  in netfs_clear_subrequests()
75 	struct netfs_io_request *rreq =  in netfs_free_request()  local
78 	trace_netfs_rreq(rreq, netfs_rreq_trace_free);  in netfs_free_request()
79 	netfs_clear_subrequests(rreq, false);  in netfs_free_request()
80 	if (rreq->netfs_ops->free_request)  in netfs_free_request()
81 		rreq->netfs_ops->free_request(rreq);  in netfs_free_request()
82 	if (rreq->cache_resources.ops)  in netfs_free_request()
83 		rreq->cache_resources.ops->end_operation(&rreq->cache_resources);  in netfs_free_request()
84 	kfree(rreq);  in netfs_free_request()
88 void netfs_put_request(struct netfs_io_request *rreq, bool was_async,  in netfs_put_request()  argument
91 	unsigned int debug_id = rreq->debug_id;  in netfs_put_request()
95 	dead = __refcount_dec_and_test(&rreq->ref, &r);  in netfs_put_request()
99 			rreq->work.func = netfs_free_request;  in netfs_put_request()
100 			if (!queue_work(system_unbound_wq, &rreq->work))  in netfs_put_request()
103 			netfs_free_request(&rreq->work);  in netfs_put_request()
111 struct netfs_io_subrequest *netfs_alloc_subrequest(struct netfs_io_request *rreq)  in netfs_alloc_subrequest()  argument
119 		subreq->rreq = rreq;  in netfs_alloc_subrequest()
120 		netfs_get_request(rreq, netfs_rreq_trace_get_subreq);  in netfs_alloc_subrequest()
133 	trace_netfs_sreq_ref(subreq->rreq->debug_id, subreq->debug_index, r + 1,  in netfs_get_subrequest()
140 	struct netfs_io_request *rreq = subreq->rreq;  in netfs_free_subrequest()  local
145 	netfs_put_request(rreq, was_async, netfs_rreq_trace_put_subreq);  in netfs_free_subrequest()
152 	unsigned int debug_id = subreq->rreq->debug_id;  in netfs_put_subrequest()