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cfq-iosched: slice offset should take ioprio into account
author
Jens Axboe
<jens.axboe@oracle.com>
Fri, 20 Apr 2007 12:18:00 +0000
(14:18 +0200)
committer
Jens Axboe
<axboe@nelson.home.kernel.dk>
Mon, 30 Apr 2007 07:01:22 +0000
(09:01 +0200)
Use the max_slice-cur_slice as the multipler for the insertion offset.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
block/cfq-iosched.c
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diff --git
a/block/cfq-iosched.c
b/block/cfq-iosched.c
index
29284fa
..
4a03970
100644
(file)
--- a/
block/cfq-iosched.c
+++ b/
block/cfq-iosched.c
@@
-442,7
+442,8
@@
static unsigned long cfq_slice_offset(struct cfq_data *cfqd,
/*
* just an approximation, should be ok.
*/
- return ((cfqd->busy_queues - 1) * cfq_prio_slice(cfqd, 1, 0));
+ return (cfqd->busy_queues - 1) * (cfq_prio_slice(cfqd, 1, 0) -
+ cfq_prio_slice(cfqd, cfq_cfqq_sync(cfqq), cfqq->ioprio));
}
/*