Re: [PATCH 4/4] posix-timers: turn it_signal into it_valid flag

[Andi Kleen]

> And why do we need to add signal->idr_lock ? It is only used to
> serialize idr_get/idr_remove. Probably we can use ->siglock for that,
> posix timers use this lock anyway.

Ok. In fact idrs have an own lock too, I'll check that out.

>
> Also. I am not sure, but perhaps it make sense to turn
> signal->posix_timers_id into the pointer to "struct idr" and allocate
> idr on demand?

Probably not worth it, it's not big enough.

-Andi

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