Hey, Greg. On Wed, Mar 04, 2020 at 06:29:07PM +0100, Greg KH wrote: > How does that happen? Who has access to a kobject without also having > the reference count incremented at the same time? Is this through sysfs > or somewhere within the kernel itself? Hopefully, this part was addressed in the other reply. > The struct device refcount should be all that is needed, don't use RCU > just to "delay freeing this object until some later time because someone > else might have a pointer to id". That's ripe for disaster. I think it's an idiomatic use of rcu given the circumstances. Whether the circumstances are reasonable is totally debatable. Thanks. -- tejun
