[Cluster-devel] [PATCH 10/17] dlm: use schedule_timeout instead of schedule in dlm_recoverd

[David Teigland <teigland@redhat.com>]

On Thu, Aug 17, 2017 at 11:40:13PM +0000, tsutomu.owa at toshiba.co.jp wrote:
> If you refer to other implementations in kernel, the following
> modifications may be better.
> The important thing is to call kthread_should_stop() after
> set_current_state(TASK_INTERRUPTIBLE).  How is this fix?

Thanks, I prefer this.  Perhaps put that explanation in a comment, e.g.

> --- fs/dlm/recoverd.c.orig      2017-08-10 16:42:31.131296351 +0900
> +++ fs/dlm/recoverd.c   2017-08-10 16:43:22.483295232 +0900
> @@ -287,8 +287,10 @@
> 	set_bit(LSFL_RECOVER_LOCK, &ls->ls_flags);
> 	wake_up(&ls->ls_recover_lock_wait);
> 
> -	while (!kthread_should_stop()) {
> +	while (1) {
                /* call kthread_should_stop() after set_current_state() /
> 		set_current_state(TASK_INTERRUPTIBLE);
> +		if (kthread_should_stop())
> +			break;
> 		if (!test_bit(LSFL_RECOVER_WORK, &ls->ls_flags) &&
> 		    !test_bit(LSFL_RECOVER_DOWN, &ls->ls_flags))
> 			schedule();
>