EPOLLEXCLUSIVE Flag
Limitations
The following values may be specified in conjunction with EPOLLEXCLUSIVE: EPOLLIN, EPOLLOUT, EPOLLWAKEUP, and EPOLLET. EPOLLHUP and EPOLLERR can also be specified, but this is not required.
CentOS 7
Backport to CentOS 7.3 only supports EPOLLIN and EPOLLOUT events alongside the implicit EPOLLHUP and EPOLLERR events.
* Mon May 02 2016 Rafael Aquini <aquini@redhat.com> [3.10.0-386.el7]
- [fs] epoll: restrict EPOLLEXCLUSIVE to POLLIN and POLLOUT (Hannes Frederic Sowa) [1245628]
- [fs] epoll: add EPOLLEXCLUSIVE flag (Hannes Frederic Sowa) [1245628]
https://git.centos.org/rpms/kernel/raw/244b67caa40f10db4d00ce3856382c07cef5b651/f/SPECS/kernel.spec