vm_page_zero_invalid
vm_page_zero_invalid((struct vm_page *)from_page, TRUE);
vm_page_zero_invalid(m, TRUE);
vm_page_zero_invalid(m, FALSE);
vm_page_zero_invalid(fs->mary[0], TRUE);
void vm_page_zero_invalid(vm_page_t m, boolean_t setvalid);
vm_page_zero_invalid(*m, TRUE);
vm_page_zero_invalid(mt, TRUE);