linux-kernel - Re: [PATCH 4/4] posix-timers: turn it_signal into it

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Message-ID: <20110906145124.GA15390@redhat.com>
Date:	Tue, 6 Sep 2011 16:51:24 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	Andi Kleen <ak@...ux.intel.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Andi Kleen <andi@...stfloor.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	eric.dumazet@...il.com
Subject: Re: [PATCH 4/4] posix-timers: turn it_signal into it_valid flag

On 09/05, Andi Kleen wrote:
>
> > I forgot everything I knew about ->it_requeue_pending logic, but it
> > seems to me that do_schedule_next_timer()->lock_timer() can find and
> > lock successfully the wrong timer. Another thread can do timer_delete()
> > and then re-create the timer with the same id.
>
> Do you mean after my patches or even before?

Ah, sorry for confusion.

Before. And after. IOW, I think this has nothing to do with your patches.

Oleg.

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