Function cpp_vm_cow_pages_reclaim_page 

pub unsafe extern "C" fn cpp_vm_cow_pages_reclaim_page(
    cow: *mut VmCowPages,
    page: *mut vm_page_t,
    offset: u64,
    eviction_action: VmCowPages_EvictionAction,
    compressor: *mut VmCompressor,
    out_success: *mut VmCowReclaimSuccess,
    out_failure: *mut VmCowReclaimFailure,
) -> bool