#include <linux/compiler.h>#include <linux/gcd.h>#include <linux/export.h>#include <linux/lcm.h> /* Lowest common multiple */unsigned long lcm(unsigned long a, unsigned long b){	if (a && b)		return (a / gcd(a, b)) * b;	else		return 0;}EXPORT_SYMBOL_GPL(lcm); unsigned long lcm_not_zero(unsigned long a, unsigned long b){	unsigned long l = lcm(a, b); 	if (l)		return l; 	return (b ? : a);}EXPORT_SYMBOL_GPL(lcm_not_zero);