linux-kernel - Re: [V4]fix ocfs2 aio/dio writing process hang

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Message-ID: <20120628083454.GF18502@dhcp-172-17-9-228.mtv.corp.google.com>
Date:	Thu, 28 Jun 2012 01:34:54 -0700
From:	Joel Becker <jlbec@...lplan.org>
To:	Junxiao Bi <junxiao.bi@...cle.com>
Cc:	ocfs2-devel@....oracle.com, linux-aio@...ck.org, mfasheh@...e.com,
	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	joe.jin@...cle.com
Subject: Re: [V4]fix ocfs2 aio/dio writing process hang

Btw, do you want me to pull these through the ocfs2 tree, or are you
sending them along yourself?

Joel

On Wed, Jun 27, 2012 at 05:09:53PM +0800, Junxiao Bi wrote:
> 
> V4 changes:
> add Acked-by: Joel Becker <jlbec@...lplan.org>
> 
> V3 changes:
> - add Cc: stable@...r.kernel.org in the patch header to align with stable rules
> - add Acked-by: Jeff Moyer <jmoyer@...hat.com>
> 
> V2 changes:
> - update the patch header of the first patch to make it more clear.
> 
> 
> This patch list fixes an issue about ocfs2 aio/dio write process hang.
> The call trace is like this:
> @  cat /proc/15913/stack
> @ [<ffffffffa06e1085>] ocfs2_aiodio_wait+0x85/0xc0 [ocfs2]
> @ [<ffffffffa06e3e39>] ocfs2_file_aio_write+0x99/0xa0 [ocfs2]
> @ [<ffffffff811ace97>] aio_rw_vect_retry+0x87/0x150
> @ [<ffffffff811aebd1>] aio_run_iocb+0x71/0x170
> @ [<ffffffff811af59b>] io_submit_one+0x1ab/0x280
> @ [<ffffffff811af77c>] do_io_submit+0x10c/0x1c0
> @ [<ffffffff811af840>] sys_io_submit+0x10/0x20
> @ [<ffffffff81509b42>] system_call_fastpath+0x16/0x1b
> @ [<ffffffffffffffff>] 0xffffffffffffffff
> --
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-- 

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	If a code change requires additional user setup, it is wrong.

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			jlbec@...lplan.org
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