EXPORTED int mailbox_crceq(struct synccrcs a, struct synccrcs b)
{
    if (a.basic && b.basic && a.basic != b.basic) return 0;
    if (a.annot && b.annot && a.annot != b.annot) return 0;
    return 1;
}
EXPORTED int mailbox_crceq(struct synccrcs a, struct synccrcs b)
{
    if (a.basic && b.basic && a.basic != b.basic) return 0;
    if (a.annot && b.annot && a.annot != b.annot) return 0;
    return 1;
}