tree 0fca6e97186080d83ff3f36bb359bcb4ef06a9e2
parent 72d3a38ee083a96c09032e608a4c7e047ce26760
author Jens Axboe <jens.axboe@oracle.com> 1184067805 +0200
committer Jens Axboe <jens.axboe@oracle.com> 1184067805 +0200

cfq-iosched: fix async queue behaviour

With the cfq_queue hash removal, we inadvertently got rid of the
async queue sharing. This was not intentional, in fact CFQ purposely
shares the async queue per priority level to get good merging for
async writes.

So put some logic in cfq_get_queue() to track the shared queues.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>