linux-kernel - [PATCH 5/6] blk-ioprio: introduce blkcg_ioprio

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Date:   Thu, 23 Sep 2021 21:46:30 +0800
From:   Yu Kuai <yukuai3@...wei.com>
To:     <axboe@...nel.dk>, <tj@...nel.org>
CC:     <linux-block@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <cgroups@...r.kernel.org>, <yukuai3@...wei.com>,
        <yi.zhang@...wei.com>
Subject: [PATCH 5/6] blk-ioprio: introduce blkcg_ioprio_free()

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

Signed-off-by: Yu Kuai <yukuai3@...wei.com>
---
 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