A: http://en.wikipedia.org/wiki/Top_post Q: Were do I find info about this thing called top-posting? A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail? A: No. Q: Should I include quotations after my reply? http://daringfireball.net/2007/07/on_top On Tue, Jun 09, 2020 at 09:35:11AM +0000, Zhang, Qiang wrote: > Thank you for your suggestion > two referenced counted objects in the same exact structure. another referenced is > "dev->printer_cdev_open"? Maybe, I don't know, but a cdev does have a reference count already, right? Why do you need printer_cdev_open as well? thanks, greg k-h