234 nfs_page_group_init(struct nfs_page *req, struct nfs_page *prev)  in nfs_page_group_init()  argument
237 	WARN_ON_ONCE(prev == req);  in nfs_page_group_init()
239 	if (!prev) {  in nfs_page_group_init()
245 		WARN_ON_ONCE(prev->wb_this_page != prev->wb_head);  in nfs_page_group_init()
246 		WARN_ON_ONCE(!test_bit(PG_HEADLOCK, &prev->wb_head->wb_flags));  in nfs_page_group_init()
247 		req->wb_head = prev->wb_head;  in nfs_page_group_init()
248 		req->wb_this_page = prev->wb_this_page;  in nfs_page_group_init()
249 		prev->wb_this_page = req;  in nfs_page_group_init()
258 		if (test_bit(PG_INODE_REF, &prev->wb_head->wb_flags)) {  in nfs_page_group_init()
493 			   struct nfs_page *prev, struct nfs_page *req)  in nfs_generic_pg_test()  argument
925 static bool nfs_can_coalesce_requests(struct nfs_page *prev,  in nfs_can_coalesce_requests()  argument
932 	if (prev) {  in nfs_can_coalesce_requests()
933 		if (!nfs_match_open_context(nfs_req_openctx(req), nfs_req_openctx(prev)))  in nfs_can_coalesce_requests()
940 					    prev->wb_lock_context))  in nfs_can_coalesce_requests()
942 		if (req_offset(req) != req_offset(prev) + prev->wb_bytes)  in nfs_can_coalesce_requests()
944 		if (req->wb_page == prev->wb_page) {  in nfs_can_coalesce_requests()
945 			if (req->wb_pgbase != prev->wb_pgbase + prev->wb_bytes)  in nfs_can_coalesce_requests()
949 			    prev->wb_pgbase + prev->wb_bytes != PAGE_SIZE)  in nfs_can_coalesce_requests()
953 	size = pgio->pg_ops->pg_test(pgio, prev, req);  in nfs_can_coalesce_requests()
973 	struct nfs_page *prev = NULL;  in nfs_pageio_do_add_request()  local
976 		prev = nfs_list_entry(mirror->pg_list.prev);  in nfs_pageio_do_add_request()
993 	if (!nfs_can_coalesce_requests(prev, req, desc))  in nfs_pageio_do_add_request()
1308 	struct nfs_page *prev;  in nfs_pageio_cond_complete()  local
1314 			prev = nfs_list_entry(mirror->pg_list.prev);  in nfs_pageio_cond_complete()
1315 			if (index != prev->wb_index + 1) {  in nfs_pageio_cond_complete()