completely rework the dma_resv semantic

[Christian König]

Hi Daniel,

looks like this is going nowhere and you don't seem to have time to review.

What can we do?

Thanks,
Christian.

Am 07.12.21 um 13:33 schrieb Christian König:
> Hi Daniel,
>
> just a gentle ping that you wanted to take a look at this.
>
> Not much changed compared to the last version, only a minor bugfix in
> the dma_resv_get_singleton error handling.
>
> Regards,
> Christian.
>
>