On Tue, Mar 16, 2021 at 9:31 PM Jens Axboe [off-list ref] wrote:

On 3/16/21 8:01 AM, Kanchan Joshi wrote:

quoted

This series adds async passthrough capability for nvme block-dev over
iouring_cmd. The patches are on top of Jens uring-cmd branch:
https://git.kernel.dk/cgit/linux-block/log/?h=io_uring-fops.v3

Application is expected to allocate passthrough command structure, set
it up traditionally, and pass its address via "block_uring_cmd->addr".
On completion, CQE is posted with completion-status after any ioctl
specific buffer/field update.

Do you have a test app? I'd be curious to try and add support for this
to t/io_uring from fio just to run some perf numbers.

Yes Jens. Need to do a couple of things to make it public, will post it today.

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