Re: HDAPS, Need to park the head for real

Jens Axboe wrote:

Ok, I'll give you some hints to get you started... What you really want
to do, is:

- Insert a park request at the front of the queue
- On completion callback on that request, freeze the block queue and
 schedule it for unfreeze after a given time

how will this interact with command queuing? there is a danger from both commands previously queued but not yet completed, and commands that are queued after the park request. or is the park request a barrier?

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