From: Benjamin LaHaise <bcrl@kvack.org>
To: Sebastian Ott <sebott@linux.vnet.ibm.com>
Cc: Anatol Pomozov <anatol.pomozov@gmail.com>,
linux-aio@kvack.org, LKML <linux-kernel@vger.kernel.org>
Subject: Re: hanging aio process
Date: Wed, 21 May 2014 09:20:38 -0400 [thread overview]
Message-ID: <20140521132038.GL2915@kvack.org> (raw)
In-Reply-To: <alpine.LFD.2.11.1405211042350.1579@denkbrett>
On Wed, May 21, 2014 at 10:48:55AM +0200, Sebastian Ott wrote:
> >
> > I already did that and it didn't change, always 1 + (1UL << 31) in all
> > cases, before and after percpu_ref_kill(&ctx->reqs). I'm not really
> > familiar with this percpu_ref stuff but it looks like the initial
> > reference is dropped asynchronous.
>
>
> cat /sys/kernel/debug/tracing/trace
Your trace still isn't monitoring aio_complete(). You need to check if
aio_complete() is getting called in order to determine if the bug is in
the core aio code or not.
-ben
--
"Thought is the essence of where you are now."
next prev parent reply other threads:[~2014-05-21 13:20 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-19 17:38 hanging aio process Sebastian Ott
2014-05-19 18:08 ` Benjamin LaHaise
2014-05-20 8:08 ` Sebastian Ott
2014-05-20 13:16 ` Sebastian Ott
2014-05-20 14:26 ` Benjamin LaHaise
2014-05-20 16:12 ` Anatol Pomozov
2014-05-20 18:09 ` Sebastian Ott
2014-05-20 18:39 ` Anatol Pomozov
2014-05-21 8:07 ` Sebastian Ott
2014-05-21 8:48 ` Sebastian Ott
2014-05-21 13:20 ` Benjamin LaHaise [this message]
2014-05-21 14:12 ` Sebastian Ott
2014-05-21 14:18 ` Anatol Pomozov
2014-05-21 14:57 ` Sebastian Ott
2014-06-04 5:24 ` Gu Zheng
2014-06-11 8:47 ` Ming Lei
2014-06-04 13:58 ` [PATCH] percpu-refcount: fix usage of this_cpu_ops (was Re: hanging aio process) Sebastian Ott
2014-06-04 16:11 ` Tejun Heo
2014-06-04 16:56 ` Sebastian Ott
2014-06-04 17:02 ` Tejun Heo
2014-06-04 16:41 ` Tejun Heo
2014-06-04 17:17 ` Christoph Lameter
2014-05-19 18:31 ` hanging aio process Anatol Pomozov
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