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由 Jens Axboe 提交于
We currently use the ring values directly, but that can lead to issues if the application is malicious and changes these values on our behalf. Created in-kernel cached versions of them, and just overwrite the user side when we update them. This is similar to how we treat the sq/cq ring tail/head updates. Reported-by: NPavel Begunkov <asml.silence@gmail.com> Reviewed-by: NPavel Begunkov <asml.silence@gmail.com> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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