90 	int head;  member
105 	if (eerb->head < eerb->tail)  in dasd_eer_get_free_bytes()
106 		return eerb->tail - eerb->head - 1;  in dasd_eer_get_free_bytes()
107 	return eerb->buffersize - eerb->head + eerb->tail -1;  in dasd_eer_get_free_bytes()
117 	if (eerb->head >= eerb->tail)  in dasd_eer_get_filled_bytes()
118 		return eerb->head - eerb->tail;  in dasd_eer_get_filled_bytes()
119 	return eerb->buffersize - eerb->tail + eerb->head;  in dasd_eer_get_filled_bytes()
139  		headindex = eerb->head / PAGE_SIZE;  in dasd_eer_write_buffer()
140  		localhead = eerb->head % PAGE_SIZE;  in dasd_eer_write_buffer()
145 		eerb->head += len;  in dasd_eer_write_buffer()
146 		if (eerb->head == eerb->buffersize)  in dasd_eer_write_buffer()
147 			eerb->head = 0; /* wrap around */  in dasd_eer_write_buffer()
148 		BUG_ON(eerb->head > eerb->buffersize);  in dasd_eer_write_buffer()
623 					eerb->head != eerb->tail);  in dasd_eer_read()
659 	if (eerb->head != eerb->tail)  in dasd_eer_poll()