[PATCH] nvme: add namespace paths links

[Hannes Reinecke]

On 4/5/22 07:42, Christoph Hellwig wrote:
> On Fri, Apr 01, 2022 at 11:28:55AM +0200, Hannes Reinecke wrote:
>> It is really annoying to always have to loop through the entire
>> /sys/block directory just to find the namespace path links for
>> a single namespace in libnvme/nvme-cli.
>> So provide links to the namespace paths for efficient lookup.
> 
> I think having some form of links would be useful.  Quite a while ago
> Thadeu looked into adding some form of relationship for lsblk and
> friends.  Maybe it would be good to sync up and make sure whatever
> links we are adding would be useful for all users?
> 
Care to elaborate?
Using the block device name is the most straightforward way here; we 
don't have a good enumeration to leverage as the paths are essentially 
just a linked list.

We sure can have a subdirectory 'paths', and stick the links in there.
If that helps with lsblk ...

Cheers,

Hannes
-- 
Dr. Hannes Reinecke                Kernel Storage Architect
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