Re: [PATCH 13/18] io_uring: add file set registration

On 2/5/19 6:01 PM, Al Viro wrote:

On Tue, Feb 05, 2019 at 05:27:29PM -0700, Jens Axboe wrote:

quoted

This should be better, passes some basic testing, too:

http://git.kernel.dk/cgit/linux-block/commit/?h=io_uring&id=01a93aa784319a02ccfa6523371b93401c9e0073

Verified that we're grabbing the right refs, and don't hold any
ourselves. For the file registration, forbid registration of the
io_uring fd, as that is pointless and will introduce a loop regardless
of fd passing.

*shrug*

So pass it to AF_UNIX socket and register _that_ - does't change the
underlying problem.

Maybe I'm being dense here, but it's an f_op match. Should catch a
passed fd as well, correct?

With that, how can there be a loop?

-- 
Jens Axboe