[PATCH] nvme-sysfs: display max_hw_sectors_kb without requiring namespaces

[Sagi Grimberg]

On 22/10/2024 18:51, Keith Busch wrote:
> On Tue, Oct 22, 2024 at 06:35:11PM +0300, Sagi Grimberg wrote:
>> On 22/10/2024 17:53, Keith Busch wrote:
>>> On Thu, Oct 17, 2024 at 02:32:18PM -0700, Abhishek Bapat wrote:
>>>
>>> The request_queue is owned by the block layer, so that seems like an
>>> okay place to export it, but attached to some other device's sysfs
>>> directory instead of a gendisk.
>>>
>>> I'm just suggesting this because it doesn't sound like this is an nvme
>>> specific problem.
>> Won't it be confusing to find queue/ directory in controller nvmeX sysfs
>> entry?
> It's the attributes of the request queue associated with that
> controller, so I think a queue/ directory under it makes sense. That's
> how it looks for gendisks, so why not for disk-less queues?
>
> Many queue attributes only make sense for gendisks, though, so maybe
> need to tweak visibility if we decide to do it like this.

It'd be good to name it "admin_queue" to clarify a bit (although its still
confusing).