Messages in this thread | | | Date | Thu, 07 Aug 2003 19:20:28 +1000 | From | Nick Piggin <> | Subject | queue reference counting |
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Jens Axboe wrote:
>On Thu, Aug 07 2003, Pavel Machek wrote: > >>Hi! >> >> >>>I ported `subj` to 2.6.0-test2. I do not yet have idea if it works, >>>but it compiles ;-). >>> >>It compiles, it event boots, but it does not seem to have much effect >>:-(. >> > >Now that the queue reference counting is in the current bk tree, we are >that much closer to real modular io schedulers. I'll post the cfq with >priorities for that. >
OK, the QUEUE_FLAG_DEAD. I assume that will be set in blk_cleanup_queue? Then all remaining requests are flushed out of the queue?
This requires that a driver must be able to continue to process requests during the call to blk_cleanup_queue, and that blk_cleanup_queue might block, right? Is this acceptable, or should there be an earlier call to set QUEUE_FLAG_DEAD and ensure queue is flushed?
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