VM_PROT_OVERRIDE_WRITE
reqprot |= VM_PROT_WRITE | VM_PROT_OVERRIDE_WRITE;
VM_PROT_OVERRIDE_WRITE,
VM_PROT_READ | VM_PROT_WRITE | VM_PROT_OVERRIDE_WRITE;
VM_PROT_OVERRIDE_WRITE,
if (fault_type & VM_PROT_OVERRIDE_WRITE)
(fault_typea & VM_PROT_OVERRIDE_WRITE) == 0) {