Hi,
I am trying to experiment with the interface for registering files and buffers.
(almost) Every time I call io_uring_register with those opcodes, my
application hangs.
It's easy to see the reason. I am blocking here:
mutex_unlock(&ctx->uring_lock);
ret = wait_for_completion_interruptible(&ctx->completions[0]);
mutex_lock(&ctx->uring_lock);
Am I right in my understanding that this is waiting for everything
that was submitted to complete? Some things in my ring may never
complete: for instance one may be polling for file descriptors that
may never really become ready.
This sounds a bit too restrictive to me. Is this really the intended
use of the interface?
