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From: Roland McGrath <roland@redhat.com>
To: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	Austin Clements <amdragon+kernelbugzilla@mit.edu>,
	Ingo Molnar <mingo@elte.hu>, john stultz <johnstul@us.ibm.com>,
	Michael Kerrisk <mtk.manpages@googlemail.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	linux-kernel@vger.kernel.org
Subject: Re: [RFC,PATCH 2/2] posix timers: don't discard the signal if the timer was explicitly destroyed
Date: Tue, 22 Apr 2008 12:08:49 -0700 (PDT)	[thread overview]
Message-ID: <20080422190849.6443E270381@magilla.localdomain> (raw)
In-Reply-To: Oleg Nesterov's message of  Tuesday, 22 April 2008 19:38:21 +0400 <20080422153821.GA19903@tv-sign.ru>

> I am not sure this patch is really needed, please review.

I don't think this is worth doing.

> The previous patch adds the user-visible change. It is not clear to me why
> should we cancel the pending signal sent by the timer after timer_delete().
> Suppose the signal is blocked, pending, the user checks sys_rt_sigpending(),
> destroys the timer and then doesn't see the signal.

So?  POSIX says it's unspecified what happens to such a signal, so an
application can't rely on it one way or the other.  I don't see any reason
to complicate it further.


Thanks,
Roland

  reply	other threads:[~2008-04-22 19:09 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-04-22 15:38 Oleg Nesterov
2008-04-22 19:08 ` Roland McGrath [this message]
2008-04-22 18:48   ` Oleg Nesterov

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