The ring management in the idxd part of the driver is more complex than
it needs to be, tracking individual batches in a ring and having null
descriptors as padding to avoid having single-operation batches. This can
be simplified by using a regular ring-based layout, with additional
overflow at the end to ensure that the one does not need to wrap within a
batch.
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
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