[PATCH 3/8] fs: add file_operations->uring_cmd()

[Luis Chamberlain]

On Thu, Mar 18, 2021 at 06:38:32AM +0100, Christoph Hellwig wrote:
> On Wed, Mar 17, 2021 at 04:10:22PM -0600, Jens Axboe wrote:
> > This is a file private handler, similar to ioctls but hopefully a lot
> > more sane and useful.
> 
> I really hate defining the interface in terms of io_uring.  This really
> is nothing but an async ioctl.

Calling it an ioctl does a disservice to what this is allowing.
Although ioctls might be a first use case, there is nothing tying the
commands to them.

  Luis