commit 9677a3e01f838622d2efc9a3ccb97090a2c3156a
author Tejun Heo <tj@kernel.org> Wed Aug 28 15:05:55 2019 -0700
committer Jens Axboe <axboe@kernel.dk> Wed Aug 28 21:17:07 2019 -0600
tree 8fee617bcc94779a92ab88c46d7862f0885a1282
parent d3e65ffff61c329fb2d0bf15736c440c2d0cfc97

block/rq_qos: implement rq_qos_ops->queue_depth_changed()

wbt already gets queue depth changed notification through
wbt_set_queue_depth().  Generalize it into
rq_qos_ops->queue_depth_changed() so that other rq_qos policies can
easily hook into the events too.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

block/blk-settings.c

diff --git a/block/blk-settings.c b/block/blk-settings.c
index 2c18312..a058997 100644
--- a/block/blk-settings.c
+++ b/block/blk-settings.c
@@ -805,7 +805,7 @@ EXPORT_SYMBOL(blk_queue_update_dma_alignment);
 void blk_set_queue_depth(struct request_queue *q, unsigned int depth)
 {
 	q->queue_depth = depth;
-	wbt_set_queue_depth(q, depth);
+	rq_qos_queue_depth_changed(q);
 }
 EXPORT_SYMBOL(blk_set_queue_depth);