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2019-11-06Add test case for IORING_SETUP_CQ_NODROPcqring-nodropJens Axboe
Tests overflows without CQ_NODROP, and correct behavior on a ring setup with CQ_NODROP. The latter backlogs events that otherwise would have been dropped, and returns -EBUSY to an application trying to submit new IO with a backlog pending. Signed-off-by: Jens Axboe <axboe@kernel.dk>