tag	line	file	source code
MAX_CHRDEV	23	fs/minix/chrdev.c	if (i < MAX_CHRDEV) {
MAX_CHRDEV	21	fs/open.c	struct file_operations * chrdev_fops[MAX_CHRDEV] = {
MAX_CHRDEV	201	include/linux/fs.h	extern struct file_operations * chrdev_fops[MAX_CHRDEV];