Re: [PATCH, RFC]: per queue request tables, 2nd cut

[Steve Lord]

So surely the next step to take with this is to break run_task_queue(&tq_disk)
apart. There are really two uses for this call at the moment -

	1. There is a shortage of request queue entries or memory

	2. A specific page or buffer head is needed, push the task queue to
	   ensure the I/O gets done.

Once a system has multiple devices the second use is really a sledge-hammer,
all plugged request queues get unplugged and fire at once. Just prodding
the specific device into life would be much more preferable.

Steve Lord