[PATCH] nvme: block ioctls if controller not in a live state

[James Smart]

On 5/14/2018 8:23 AM, Keith Busch wrote:
> On Mon, May 07, 2018 at 03:55:58PM -0700, James Smart wrote:
>> Rather than allow ioctl-based admin cmds to get intermixed on the admin
>> queue with commands being used to initialize a controller or io commands
>> to go to a controller in reconnect thus possibly hanging, reject them
>> if the controller isn't in the LIVE state. Reject with an -EAGAIN status
>> so that the app knows it could retry.
> 
> The admin ioctl is fine to use in ADMIN_ONLY state as well.
> 

Yep, I would need to take that state into account. For now, looks like 
I'll be adding poll support and reposting.

-- james