diff mbox series

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

Message ID 20210923134631.105719-6-yukuai3@huawei.com (mailing list archive)
State New, archived
Headers show
Series fix uaf in rq_qos_done_io() | expand

Commit Message

Yu Kuai Sept. 23, 2021, 1:46 p.m. UTC 
Prepare to split 'kfree(blkioprio_blkg)' from blkcg_ioprio_exit(),
no functional changes.

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

Patch

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)