Hello Christoph, How about applying the patch below on top of Hannes' patch? The patch below has the advantage that it completely separates the open channel sysfs attributes from the NVMe core sysfs attributes - the open channel code doesn't have to know anything about the NVMe core sysfs attributes and the NVMe core does not have to know anything about the open channel sysfs attributes.
This looks better to me Bart (unless I'm missing something)
