nvme multipath support V2

[Christoph Hellwig]

On Fri, Sep 22, 2017 at 08:21:09AM +0800, Tony Yang wrote:
> Excuse me,
>    ask an junior question, how can you complete the nvme mpath package
> clone, I use git clone, after completion, found no nvme directory.
> 
> 
> [root at scst1 soft]#  git clone
> git://git.infradead.org/users/hch/block.git nvme-mpath
> Cloning into 'nvme-mpath'...
> remote: Counting objects: 5623436, done.
> remote: Compressing objects: 100% (922468/922468), done.
> remote: Total 5623436 (delta 4757577), reused 5524606 (delta 4658819)
> Receiving objects: 100% (5623436/5623436), 1.12 GiB | 3.17 MiB/s, done.
> Resolving deltas: 100% (4757577/4757577), done.
> Checking out files: 100% (50795/50795), done.

git checkout nvme-mpath
make oldconfig
<answer question>
<make sure all options with NVME in the name are enabled in .config>
make