Re: [PATCH] blk-mq: put the reference of the io scheduler module after switching back

[Yu Kuai]

Hi!

在 2022/10/13 22:18, Jinlong Chen 写道:
> > But I don't see elevator_switch() release the referenct of the module
> > it is switching from. It's still not balance to me.
>
> The reference count is released here:
>
> elevator_switch_mq()
>    --> elevator_exit()
>      --> __elevator_exit()
>        --> kobject_put()
>          --> kobject_release()
>            --> elevator_release()
>              --> elevator_put()
>
> What a deep call stack. :)

Yes, you're right.

Thanks,
Kuai
> Sincerely,
> Jinlong Chen
> .