uvmspace_fork     526 uvm/uvm_extern.h struct vmspace		*uvmspace_fork(struct vmspace *);
uvmspace_fork     244 uvm/uvm_glue.c 		p2->p_vmspace = uvmspace_fork(p1->p_vmspace); /* fork vmspace */
uvmspace_fork    3171 uvm/uvm_map.c  	nvm = uvmspace_fork(ovm);