Remove target from visibility
void scsi_target_reap_ref_release(struct kref * kref);
kref
the reap_ref in the target being released
Called on last put of reap_ref, which is the indication that no device under this target is visible anymore, so render the target invisible in sysfs. Note: we have to be in user context here because the target reaps should be done in places where the scsi device visibility is being removed.