static int create_anon_file(unsigned long len) 
static int create_anon_file(unsigned long long len) 
static int create_anon_file(unsigned long len){	void *addr;	int fd;	fd = open("/dev/anon", O_RDWR);	if(fd < 0) {		perror("opening /dev/anon");		exit(1);	}	addr = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);	if(addr == MAP_FAILED){		perror("mapping physmem file");		exit(1);	}	munmap(addr, len);	return(fd);}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/ae17381608a11781a6a67e0ce51607f36780aac7/mem.c/clean/arch/um/os-Linux/mem.c