Symbol: sys_vmspace_munmap
sys/kern/init_sysent.c
507
{ AS(vmspace_munmap_args), 4, (sy_call_t *)sys_vmspace_munmap }, /* 490 = vmspace_munmap */
sys/sys/sysproto.h
1724
int sys_vmspace_munmap (struct sysmsg *sysmsg, const struct vmspace_munmap_args *);