239 	if (ret || req->wb_head == req)  in nfs_page_group_lock()
241 	return nfs_page_set_headlock(req->wb_head);  in nfs_page_group_lock()
251 	if (req != req->wb_head)  in nfs_page_group_unlock()
252 		nfs_page_clear_headlock(req->wb_head);  in nfs_page_group_unlock()
264 	struct nfs_page *head = req->wb_head;  in nfs_page_group_sync_on_bit_locked()
318 		req->wb_head = req;  in nfs_page_group_init()
322 		WARN_ON_ONCE(prev->wb_this_page != prev->wb_head);  in nfs_page_group_init()
323 		WARN_ON_ONCE(!test_bit(PG_HEADLOCK, &prev->wb_head->wb_flags));  in nfs_page_group_init()
324 		req->wb_head = prev->wb_head;  in nfs_page_group_init()
330 		kref_get(&req->wb_head->wb_kref);  in nfs_page_group_init()
335 		if (test_bit(PG_INODE_REF, &prev->wb_head->wb_flags)) {  in nfs_page_group_init()
355 	struct nfs_page *head = req->wb_head;  in nfs_page_group_destroy()
366 		tmp->wb_head = tmp;  in nfs_page_group_destroy()
504 		for (last = req->wb_head;  in nfs_create_subreq()
505 		     last->wb_this_page != req->wb_head;  in nfs_create_subreq()