bfq: Annotate fall-through in a switch statement

This patch avoids that gcc 7 issues a warning about fall-through
when building with W=1.

Acked-by: Paolo Valente <paolo.valente@linaro.org>
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/block/bfq-iosched.c b/block/bfq-iosched.c
index 8f3d22330d648476c0a8119483d81951f85d9d5e..856f4199a4700cc2938ba36d4ce23717abb8f14a 100644 (file)
--- a/block/bfq-iosched.c
+++ b/block/bfq-iosched.c
@@ -3780,6 +3780,7 @@ bfq_set_next_ioprio_data(struct bfq_queue *bfqq, struct bfq_io_cq *bic)
        default:
                dev_err(bfqq->bfqd->queue->backing_dev_info->dev,
                        "bfq: bad prio class %d\n", ioprio_class);
+               /* fall through */
        case IOPRIO_CLASS_NONE:
                /*
                 * No prio set, inherit CPU scheduling settings.