[PATCH 1/5] nvme-core: Make nvme_init/uninit_ctrl setup/teardown symmetric

[Keith Busch]

On Wed, Oct 18, 2017 at 06:29:40PM +0300, Sagi Grimberg wrote:
> Can you explain how would I see naming clashes? I'm not sure I
> understand what you are referring to.

It's been a while since I tested this. I used to observe -EEXIST errors
setting up the kobj's from something as simple as this:

  dd if=/dev/nvme0n1 of=/dev/null conv=noerror 2> /dev/null &
  echo 1 > /sys/class/nvme/nvme0/device/remove
  echo 1 > /sys/bus/pci/rescan

The rescan would recreate nvme0n1 that still exists from the open
handle. I'm not seeing an error today; not sure what changed, but I'm
looking into that now.