[PATCH 5/6] blk-ioprio: introduce blkcg_ioprio_free()

[Yu Kuai]

Prepare to split 'kfree(blkioprio_blkg)' from blkcg_ioprio_exit(),
no functional changes.

Signed-off-by: Yu Kuai <yukuai3@xxxxxxxxxx>
---
 block/blk-ioprio.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/block/blk-ioprio.c b/block/blk-ioprio.c
index 332a07761bf8..55338ebee356 100644
--- a/block/blk-ioprio.c
+++ b/block/blk-ioprio.c
@@ -212,9 +212,18 @@ static void blkcg_ioprio_exit(struct rq_qos *rqos)
 	kfree(blkioprio_blkg);
 }
 
+static void blkcg_ioprio_free(struct rq_qos *rqos)
+{
+	struct blk_ioprio *blkioprio_blkg =
+		container_of(rqos, typeof(*blkioprio_blkg), rqos);
+
+	kfree(blkioprio_blkg);
+}
+
 static struct rq_qos_ops blkcg_ioprio_ops = {
 	.track	= blkcg_ioprio_track,
 	.exit	= blkcg_ioprio_exit,
+	.free	= blkcg_ioprio_free,
 };
 
 int blk_ioprio_init(struct request_queue *q)
-- 
2.31.1