On 6/3/24 21:40, Christoph Hellwig wrote:
There is no requirement to process them synchronously, there is just a requirement to preserve the order. Note that my suggestion a few arounds ago also included a copy id to match them up. If we don't need that I'm happy to leave it away. If need it it to make stacking drivers' lifes easier that suggestion still stands.
Including an ID in REQ_OP_COPY_DST and REQ_OP_COPY_SRC operations sounds much better to me than abusing the merge infrastructure for combining these two operations into a single request. With the ID-based approach stacking drivers are allowed to process copy bios asynchronously and it is no longer necessary to activate merging for copy operations if merging is disabled (QUEUE_FLAG_NOMERGES). Thanks, Bart.
