[PATCH 17/17] nvme: enable non-inline passthru commands

[Christoph Hellwig]

On Mon, Mar 28, 2022 at 10:14:13AM +0530, Kanchan Joshi wrote:
> Thinking a bit more on "(b) big-sqe + big-cqe". Will that also require
> a new ioctl (other than NVME_IOCTL_IO64_CMD) in nvme? Because
> semantics will be slightly different (i.e. not updating the result
> inside the passthrough command but sending it out-of-band to
> io_uring). Or am I just overthinking it.

Again, there should be absolutely no coupling between ioctls and
io_uring async cmds.  The only thing trying to reuse structures or
constants does is to create a lot of confusion.