When using epoll to listen on multiple uring_fds, occasionally, when an event occurs on a uring_fd, it may not wake up the epoll.
Scenario:
Using epoll_wait to monitor multiple uring_fds. When submitting io_uring_prep_nop to one of the uring_fds, sometimes epoll is not awakened. a very mysterious bug.
When using epoll to listen on multiple uring_fds, occasionally, when an event occurs on a uring_fd, it may not wake up the epoll.
Scenario: Using epoll_wait to monitor multiple uring_fds. When submitting io_uring_prep_nop to one of the uring_fds, sometimes epoll is not awakened. a very mysterious bug.