Commit 2389d1ef authored Nov 05, 2007 by Oleg Nesterov Committed by Jens Axboe Nov 07, 2007

cfq: fix IOPRIO_CLASS_IDLE accounting

Spotted by Nick <gentuu@gmail.com>, hopefully can explain the second trace in
http://bugzilla.kernel.org/show_bug.cgi?id=9180

.

If ->async_idle_cfqq != NULL cfq_put_async_queues() puts it IOPRIO_BE_NR times
in a loop. Fix this.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

parent dbeeb816

block/cfq-iosched.c

+3 −2

Original line number	Diff line number	Diff line
		@@ -2068,10 +2068,11 @@ static void cfq_put_async_queues(struct cfq_data *cfqd)
		cfq_put_queue(cfqd->async_cfqq[0][i]);
		if (cfqd->async_cfqq[1][i])
		cfq_put_queue(cfqd->async_cfqq[1][i]);
		}

		if (cfqd->async_idle_cfqq)
		cfq_put_queue(cfqd->async_idle_cfqq);
		}
		}

		static void cfq_exit_queue(elevator_t *e)
		{