61 	struct nfs_page		*req;  in nfs_create_request()  local
64 	req = nfs_page_alloc();  in nfs_create_request()
65 	if (req == NULL)  in nfs_create_request()
69 	req->wb_lock_context = nfs_get_lock_context(ctx);  in nfs_create_request()
70 	if (req->wb_lock_context == NULL) {  in nfs_create_request()
71 		nfs_page_free(req);  in nfs_create_request()
78 	req->wb_page    = page;  in nfs_create_request()
79 	atomic_set(&req->wb_complete, 0);  in nfs_create_request()
80 	req->wb_index	= page->index;  in nfs_create_request()
85 	req->wb_offset  = offset;  in nfs_create_request()
86 	req->wb_pgbase	= offset;  in nfs_create_request()
87 	req->wb_bytes   = count;  in nfs_create_request()
88 	req->wb_context = get_nfs_open_context(ctx);  in nfs_create_request()
89 	kref_init(&req->wb_kref);  in nfs_create_request()
90 	return req;  in nfs_create_request()
97 void nfs_unlock_request(struct nfs_page *req)  in nfs_unlock_request()  argument
99 	if (!NFS_WBACK_BUSY(req)) {  in nfs_unlock_request()
104 	clear_bit(PG_BUSY, &req->wb_flags);  in nfs_unlock_request()
106 	wake_up_bit(&req->wb_flags, PG_BUSY);  in nfs_unlock_request()
107 	nfs_release_request(req);  in nfs_unlock_request()
117 static void nfs_clear_request(struct nfs_page *req)  in nfs_clear_request()  argument
119 	struct page *page = req->wb_page;  in nfs_clear_request()
120 	struct nfs_open_context *ctx = req->wb_context;  in nfs_clear_request()
121 	struct nfs_lock_context *l_ctx = req->wb_lock_context;  in nfs_clear_request()
125 		req->wb_page = NULL;  in nfs_clear_request()
129 		req->wb_lock_context = NULL;  in nfs_clear_request()
133 		req->wb_context = NULL;  in nfs_clear_request()
146 	struct nfs_page *req = container_of(kref, struct nfs_page, wb_kref);  in nfs_free_request()  local
149 	nfs_clear_request(req);  in nfs_free_request()
150 	nfs_page_free(req);  in nfs_free_request()
153 void nfs_release_request(struct nfs_page *req)  in nfs_release_request()  argument
155 	kref_put(&req->wb_kref, nfs_free_request);  in nfs_release_request()
172 nfs_wait_on_request(struct nfs_page *req)  in nfs_wait_on_request()  argument
174 	return wait_on_bit(&req->wb_flags, PG_BUSY,  in nfs_wait_on_request()
179 …fs_generic_pg_test(struct nfs_pageio_descriptor *desc, struct nfs_page *prev, struct nfs_page *req)  in nfs_generic_pg_test()  argument
191 	return desc->pg_count + req->wb_bytes <= desc->pg_bsize;  in nfs_generic_pg_test()
235 				      struct nfs_page *req,  in nfs_can_coalesce_requests()  argument
238 	if (req->wb_context->cred != prev->wb_context->cred)  in nfs_can_coalesce_requests()
240 	if (req->wb_lock_context->lockowner != prev->wb_lock_context->lockowner)  in nfs_can_coalesce_requests()
242 	if (req->wb_context->state != prev->wb_context->state)  in nfs_can_coalesce_requests()
244 	if (req->wb_index != (prev->wb_index + 1))  in nfs_can_coalesce_requests()
246 	if (req->wb_pgbase != 0)  in nfs_can_coalesce_requests()
250 	return pgio->pg_ops->pg_test(pgio, prev, req);  in nfs_can_coalesce_requests()
262 				     struct nfs_page *req)  in nfs_pageio_do_add_request()  argument
268 		if (!nfs_can_coalesce_requests(prev, req, desc))  in nfs_pageio_do_add_request()
272 			desc->pg_ops->pg_init(desc, req);  in nfs_pageio_do_add_request()
273 		desc->pg_base = req->wb_pgbase;  in nfs_pageio_do_add_request()
275 	nfs_list_remove_request(req);  in nfs_pageio_do_add_request()
276 	nfs_list_add_request(req, &desc->pg_list);  in nfs_pageio_do_add_request()
277 	desc->pg_count += req->wb_bytes;  in nfs_pageio_do_add_request()
308 			   struct nfs_page *req)  in __nfs_pageio_add_request()  argument
310 	while (!nfs_pageio_do_add_request(desc, req)) {  in __nfs_pageio_add_request()
334 			struct nfs_page *req;  in nfs_do_recoalesce()  local
336 			req = list_first_entry(&head, struct nfs_page, wb_list);  in nfs_do_recoalesce()
337 			nfs_list_remove_request(req);  in nfs_do_recoalesce()
338 			if (__nfs_pageio_add_request(desc, req))  in nfs_do_recoalesce()
349 		struct nfs_page *req)  in nfs_pageio_add_request()  argument
354 		ret = __nfs_pageio_add_request(desc, req);  in nfs_pageio_add_request()