[RFC PATCH 2/2] nvme-multipath: remove multipath module param

[Christoph Hellwig]

On Fri, Mar 21, 2025 at 12:07:23PM +0530, Nilay Shroff wrote:
> Remove the multipath module parameter from nvme-core and make native
> NVMe multipath support explicit. Since we now always create a multipath
> head disk node, even for single-port NVMe disks, when CONFIG_NVME_
> MULTIPATH is enabled, this module parameter is no longer needed to
> toggle the behavior.
> 
> Users who prefer non-native multipath must disable CONFIG_NVME_MULTIPATH
> at compile time.

Hmm, I actually missed that in the last patch.  I fear that is a huge
change people don't expect.  I suspect we need to make the creation
of the head node and the delayed removal an opt-in and not the default
to keep existing behavior.