> -     ret = pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, &old);
> +     ret = -pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, &old);
>       if (ret)
> -             return ERR_PTR(-ret);
> +             goto out;

Am I the only one who finds ret = -pthread_*() pretty odd? :)  (ret = -0
on success.. ok.. I guess..)

I'd have done something like

        err = pthread_*()
        if (err) {
                ret = -err;

so that it looks like the -1/errno pattern that our brains already have
to deal with.

- z
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