linux-ext4 - Re: freeze

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Message-ID: <CAD6i1f+hqmjJAO1mAM3o2gtv4qMGJuosen28RLuAwMLMnFTYSw@mail.gmail.com>
Date:	Fri, 12 Oct 2012 21:38:15 +0530
From:	Prashant Shah <pshah.mumbai@...il.com>
To:	Jan Kara <jack@...e.cz>
Cc:	Eric Sandeen <sandeen@...hat.com>, linux-ext4@...r.kernel.org
Subject: Re: freeze_bdev hangs

Hi,

On Wed, Oct 10, 2012 at 3:19 AM, Jan Kara <jack@...e.cz> wrote:
>   OK. There are several ways how I could imagine you hit ino == 0. Either
> someone is using direct IO or inode is a block device inode...
>

Fixed one of the issues. It turn out that printk() in the request
function cause the /var/log/messages file to be updated that resulted
in more block copies in request function which in turn triggered more
printk's.

I will check the direct IO operations and report back.

Regards.
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