On Fri, Sep 09 2005, Andrew Morton wrote:
>
> Thanks. Either a USB bug or a CFQ bug...
Try backing out the CFQ ref counting change from Brian King, I have a
suspicion that it still fails in some corner cases.
diff -puN drivers/block/cfq-iosched.c~cfq_refcnt_fix drivers/block/cfq-iosched.c
--- linux-2.6/drivers/block/cfq-iosched.c~cfq_refcnt_fix 2005-08-30
17:26:55.000000000 -0500
+++ linux-2.6-bjking1/drivers/block/cfq-iosched.c 2005-08-31
08:48:30.000000000 -0500
@@ -2260,8 +2260,6 @@ static void cfq_put_cfqd(struct cfq_data
if (!atomic_dec_and_test(&cfqd->ref))
return;
- blk_put_queue(q);
-
cfq_shutdown_timer_wq(cfqd);
q->elevator->elevator_data = NULL;
@@ -2318,7 +2316,6 @@ static int cfq_init_queue(request_queue_
e->elevator_data = cfqd;
cfqd->queue = q;
- atomic_inc(&q->refcnt);
cfqd->max_queued = q->nr_requests / 4;
q->nr_batching = cfq_queued;
_
--
Jens Axboe
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