uvm_map_reserve  1813 uvm/uvm_map.c  	if (uvm_map_reserve(dstmap, len, start, 0, &dstaddr) == FALSE)
uvm_map_reserve   306 uvm/uvm_map.h  int		uvm_map_reserve(vm_map_t, vsize_t, vaddr_t, vsize_t,