[PATCH v4 3/5] nvme: refactor nvme_submit_user_cmd()

[hch at lst.de]

On Thu, May 05, 2022 at 02:44:40PM -0600, Jens Axboe wrote:
> On 5/5/22 1:50 PM, hch at lst.de wrote:
> > On Thu, May 05, 2022 at 01:31:28PM -0600, Jens Axboe wrote:
> >>>> Jens Axboe
> >>>
> >>> This does work and got me past the null ptr segfault.
> >>
> >> OK good, thanks for testing. I did fold it in.
> > 
> > It might make sense to just kill nvme_meta_from_bio and pass the
> > meta pointer directly with this version of the code.
> 
> Do you want to do an incremental for that? Looking at
> nvme_execute_user_rq() and nvme_uring_task_cb() there's a fair bit of
> duplication of the meta copy.

Yes, there is.  And the right way is to keep the integrity payload alive
longer, but I'm not sure we are going to get that done in time..