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-rw-r--r--block/elevator.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/block/elevator.c b/block/elevator.c
index cca049fb45c8..91e18f8af9be 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -979,8 +979,9 @@ static int elevator_switch(struct request_queue *q, struct elevator_type *new_e)
goto fail_register;
}
- /* done, replace the old one with new one and turn off BYPASS */
+ /* done, clear io_cq's, switch elevators and turn off BYPASS */
spin_lock_irq(q->queue_lock);
+ ioc_clear_queue(q);
old_elevator = q->elevator;
q->elevator = e;
spin_unlock_irq(q->queue_lock);