97 	long size, remain, n;  in buffer_op()  local
100 	remain = len;  in buffer_op()
104 		remain = (n < 0 ? remain : 0);  in buffer_op()
109 	remain -= size;  in buffer_op()
110 	if (remain == 0)  in buffer_op()
113 	while (addr < ((addr + remain) & PAGE_MASK)) {  in buffer_op()
116 			remain = (n < 0 ? remain : 0);  in buffer_op()
121 		remain -= PAGE_SIZE;  in buffer_op()
123 	if (remain == 0)  in buffer_op()
126 	n = do_op_one_page(addr, remain, is_write, op, arg);  in buffer_op()
128 		remain = (n < 0 ? remain : 0);  in buffer_op()
134 	return remain;  in buffer_op()