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Date:	Mon, 13 May 2013 02:21:06 +0000 (GMT)
From:	EUNBONG SONG <eunb.song@...sung.com>
To:	Tony Luck <tony.luck@...il.com>,
	Dmitry Monakhov <dmonakhov@...nvz.org>
Cc:	Theodore Ts'o <tytso@....edu>,
	"linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: Re: Re: EXT4 panic at jbd2_journal_put_journal_head() in 3.9+



> CONFIG_IA64_PAGE_SIZE_64KB=y

> fsblock size is whatever is the default for SLES11SP2 on ia64 - which
> tool will tell me?

> My git bisect finally competed and points the a finger at:

> bisect> git bisect good
> ae4647fb7654676fc44a97e86eb35f9f06b99f66 is first bad commit
> commit ae4647fb7654676fc44a97e86eb35f9f06b99f66
> Author: Jan Kara 
> Date:   Fri Apr 12 00:03:42 2013 -0400

>     jbd2: reduce journal_head size

>     Remove unused t_cow_tid field (ext4 copy-on-write support doesn't seem
>     to be happening) and change b_modified and b_jlist to bitfields thus
>     saving 8 bytes in the structure.

>     Signed-off-by: Jan Kara 
>     Signed-off-by: "Theodore Ts'o" 
>     Reviewed-by: Zheng Liu 

> :040000 040000 c39ece4341894b3daf84764ba425a87ffb90fe50
> d4e8d9185c2a1b740c235ca8ed05d496a442fce3 M      include

Hi, my git bisect result is same yours. And i reported that to community yesterday.
Thanks. 

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