linux-kernel - Re: exit_aio() hang after I/O failure

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Message-ID: <CAO+b5-q9zYWiBLJMyXEfY1EhOyQtKLs5rPyx+n+Tf79=6WiK1g@mail.gmail.com>
Date:	Mon, 23 Jan 2012 16:47:26 +0000
From:	Bart Van Assche <bvanassche@....org>
To:	Jeff Moyer <jmoyer@...hat.com>
Cc:	Jens Axboe <axboe@...nel.dk>, Tejun Heo <htejun@...il.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: exit_aio() hang after I/O failure

On Mon, Jan 23, 2012 at 4:15 PM, Jeff Moyer <jmoyer@...hat.com> wrote:
> Bart Van Assche <bvanassche@....org> writes:
> > Apparently processes can hang in exit_aio() with at least kernel 3.2.1
> > after an I/O failure. Has anyone seen this before ?
> >
> > This occurred after a SCSI device had been removed entirely (and hence
> > after all I/O requests were killed by scsi_remove_host()).
>
> Fixed here:
>
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=69e4747ee9727d660b88d7e1efe0f4afcb35db1b

Thanks a lot for the feedback - I'll give this patch a try.

Bart.
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