tag	line	file	source code
CMAX	1553	drivers/char/pcxx.c	if(head >= (CMAX-CSTART) || (head & 03)) {
CMAX	1572	drivers/char/pcxx.c	head = (head+4) & (CMAX-CSTART-4);
CMAX	1587	drivers/char/pcxx.c	n = (head-tail) & (CMAX-CSTART-4);