From: Kazuya Mio <k-mio@sx.jp.nec.com>
Subject: Re: [BUG] aborted ext4 leads to inifinity loop in balance_dirty_pages
Date: Wed, 02 Nov 2011 14:24:01 +0900
Message-ID: <4EB0D3F1.6020102@sx.jp.nec.com>
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Cc: ext4 <linux-ext4@vger.kernel.org>, Theodore Tso <tytso@mit.edu>,
	Andreas Dilger <adilger@dilger.ca>
To: Jan Kara <jack@suse.cz>
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2011/11/02 8:13, Jan Kara wrote:
>> The problem is that we cannot unmount the corrupted filesystem due to
>> un-killable dd process. We must bring down the system to resume the service
>> with no dirty pages. I think it is important for the service continuity
>> to be able to kill the thread handling in balance_dirty_pages().
>    Sure. Then allowing a process to be killed while waiting in
> balance_dirty_pages() would solve your problem. That can be done relatively
> easily. I can write the patch, just now the code is under rewrite from
> IO-less dirty throttling patches so I'll wait for a while for it to settle
> down.

Thanks for working this on.

Regards,
Kazuya Mio