linux-kernel - Re: [PATCH] perf_event: fix loss of notification with multi-event sampling

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Message-ID: <1322042767.14799.25.camel@twins>
Date:	Wed, 23 Nov 2011 11:06:07 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Stephane Eranian <eranian@...gle.com>
Cc:	linux-kernel@...r.kernel.org, mingo@...e.hu
Subject: Re: [PATCH] perf_event: fix loss of notification with multi-event
 sampling

On Wed, 2011-11-23 at 10:30 +0100, Stephane Eranian wrote:
> 
> In the case of perf_event, we are not in a producer-consumer model, so
> it seems like the behavior we have now is correct. The caller of poll()
> gets stuck if the file descriptor is closed. 

But wouldn't out event->waitq still be referenced by that waiting task?
Even though we freed it in our fops->release() callback?
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