On Wed, Jan 20, 2021 at 11:39:08AM -0800, Dan Williams wrote: > The ioctl implementation in libnvdimm is a case study in what can be > cleaned up when the cdev core handles synchronizing in-flight ioctls > with device removal. Switch to cdev_register_queued() which allows for > the ugly context lookup and activity tracking implementation to be > dropped, among other cleanups.
I'm confused, the cdev handles the filesystem access from /dev/ which handles the ioctl. Any use of a cdev with relationship to a struct device that might go away is independent, so we really should not tie these together in any way. thanks, greg k-h
