only allow unprivileged passthrough for commands without effects v3

[Christoph Hellwig]

On Fri, Dec 23, 2022 at 06:58:56PM +0530, Kanchan Joshi wrote:
> On Fri, Dec 23, 2022 at 08:45:45AM +0100, Christoph Hellwig wrote:
>> Btw, any chance you could write some tests for blktests to verify
>> the unprivilged passthrough operations?
>
> Good point, will look into that.
>
> FWIW I tested v3 with fio/liburing test and few nvme-cli commands. 

I've done testing with nvme-cli and su, but it might be worth wiring
that up.