[PATCH V2] nvme: Add module reference counting for multipath devices

[Wen Xiong]

On 2026-08-26 07:40, Nilay Shroff wrote:

> Also, since a multipath head can have paths through different 
> transports
> , we should not take a reference only to the transport of one 
> namespace/path
> found through nvme_find_path(), as was done in v1. Instead, when 
> opening the
> head, take a module reference iterating through each controller 
> reachable
> from the corresponding NVMe subsystem. This ensures that every 
> transport
> that can service I/O for the active multipath namespace remains loaded 
> for
> the duration of its use.
> 
I will look into iterating though each controller/each namespace from 
nvme subsystem.

Thanks,
Wendy