提交 016c3524 编写于 作者: T Tejun Heo 提交者: Joseph Qi

blkcg: fix missing free on error path of blk_iocost_init()

commit 3532e7227243beb0b782266dc05c40b6184ad051 upstream.

blk_iocost_init() forgot to free its percpu stat on the error path.
Fix it.

Fixes: 7caa47151ab2 ("blkcg: implement blk-iocost")
Reported-by: NHillf Danton <hdanton@sina.com>
Signed-off-by: NTejun Heo <tj@kernel.org>
Signed-off-by: NJens Axboe <axboe@kernel.dk>
Signed-off-by: NJoseph Qi <joseph.qi@linux.alibaba.com>
Signed-off-by: NJiufei Xue <jiufei.xue@linux.alibaba.com>
Reviewed-by: NJoseph Qi <joseph.qi@linux.alibaba.com>
上级 721d0f3e
......@@ -1876,6 +1876,7 @@ static int blk_iocost_init(struct request_queue *q)
ret = blkcg_activate_policy(q, &blkcg_policy_iocost);
if (ret) {
rq_qos_del(q, rqos);
free_percpu(ioc->pcpu_stat);
kfree(ioc);
return ret;
}
......
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