block: add wbt_disable_default export for BFQ

This isn't unused, if BFQ is modular we get into trouble.

Fixes: b6676f653f13 ("block: remove a few unused exports")
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/block/blk-wbt.c b/block/blk-wbt.c
index 919444d754895749f1f0aab49385bee3e10437be..9f142b84dc85704de776f6a64d76cc2bd0e35e33 100644 (file)
--- a/block/blk-wbt.c
+++ b/block/blk-wbt.c
@@ -754,6 +754,7 @@ void wbt_disable_default(struct request_queue *q)
        if (rwb->enable_state == WBT_STATE_ON_DEFAULT)
                rwb->wb_normal = 0;
 }
+EXPORT_SYMBOL_GPL(wbt_disable_default);
 
 static struct rq_qos_ops wbt_rqos_ops = {
        .throttle = wbt_wait,