CQRingFlags

No flags set

IORING_CQ_EVENTFD_DISABLED disable eventfd notifications (available from Linux 5.8) This new flag should be set/clear from the application to disable/enable eventfd notifications when a request is completed and queued to the CQ ring.

Before this patch, notifications were always sent if an eventfd is registered, so IORING_CQ_EVENTFD_DISABLED is not set during the initialization. It will be up to the application to set the flag after initialization if no notifications are required at the beginning.