> If you have a file registered, that holds a reference to it. So when > you then otherwise close it in the app, it's similar to having done > a dup() on it and just closing the original. So yes, this is known and > expected, I'm afraid. Thanks for clarification, the only way to delete the file registered reference is to use io_uring_unregister_files right? I don't think that we can support SQPOLL for 5.8/5.9, but at least for 5.10+ :) --- Josef Grieb