Hi, This series tries to address a change in user visible behavior, reported in: https://bugzilla.kernel.org/show_bug.cgi?id=208943 Epoll does not report an event to all the threads running epoll_wait() on the same epoll descriptor. Unsurprisingly, this was bisected back to 339ddb53d373 (fs/epoll: remove unnecessary wakeups of nested epoll), which has had various problems in the past, beyond only nested epoll usage. Thanks! Davidlohr Bueso (2): kselftest: introduce new epoll test case fs/epoll: restore waking from ep_done_scan() fs/eventpoll.c | 6 +++ .../filesystems/epoll/epoll_wakeup_test.c | 44 +++++++++++++++++++ 2 files changed, 50 insertions(+) -- 2.26.2
