Re: [PATCH v2 0/5] sched: Add on_rq states and remove several double rq locks

[Oleg Nesterov]

On 07/28, Kirill Tkhai wrote:
>
> You're right. We have to check for "task_migrating" in switched_from_fair().
> One more place is switched_from_dl().

Or we can simply check task_migrating() in __sched_setscheduler(), like
set_cpus_allowed() does.

This probably means that you should add this check into task_rq_lock() as
Peter suggests. Or at least add another task_rq_lock_xxx() helper.

Oleg.

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