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authorYufen Yu <yuyufen@huawei.com>2020-10-09 06:26:27 +0300
committerJens Axboe <axboe@kernel.dk>2020-10-09 21:34:06 +0300
commitdd1c372d656600234a1704f456f9977ca684865c (patch)
tree5f50e1b2f9d6fd2e0c8eca64330e8bcdcd4064d8 /block/elevator.c
parent7ea6bf2e6c409e245a31b9ac6a4ba24949ad442f (diff)
downloadlinux-dd1c372d656600234a1704f456f9977ca684865c.tar.xz
block: invoke blk_mq_exit_sched no matter whether have .exit_sched
We will register debugfs for scheduler no matter whether it have defined callback funciton .exit_sched. So, blk_mq_exit_sched() is always needed to unregister debugfs. Also, q->elevator should be set as NULL after exiting scheduler. For now, since all register scheduler have defined .exit_sched, it will not cause any actual problem. But It will be more reasonable to do this change. Signed-off-by: Yufen Yu <yuyufen@huawei.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/elevator.c')
-rw-r--r--block/elevator.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/block/elevator.c b/block/elevator.c
index 90ed7a28c21d..7d76b61e157a 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -191,8 +191,7 @@ static void elevator_release(struct kobject *kobj)
void __elevator_exit(struct request_queue *q, struct elevator_queue *e)
{
mutex_lock(&e->sysfs_lock);
- if (e->type->ops.exit_sched)
- blk_mq_exit_sched(q, e);
+ blk_mq_exit_sched(q, e);
mutex_unlock(&e->sysfs_lock);
kobject_put(&e->kobj);