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	 <20091117015655.GA8683@suse.de>
Date: Tue, 17 Nov 2009 19:07:33 +0800
Message-ID: <2df346410911170307y1eb1f209se01d0cf456bb0bc6@mail.gmail.com>
Subject: Re: [BUG]2.6.27.y some contents lost after writing to mmaped file
From: JiSheng Zhang <jszhang3@gmail.com>
To: Greg KH <gregkh@suse.de>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, stable@kernel.org
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Hi Greg,

2009/11/17 Greg KH <gregkh@suse.de>:
>>
>> Tested kernel is 2.6.27.12 and 2.6.27.39
>
> Does this work on any kernel you have tested? ?Or is it a regression?

I have tested on both 2.6.27.12 and 2.6.27.39, fsx-linux all failed.

>
>> Tested file system: ext3, tmpfs.
>> IMHO, it impacts all file systems.
>>
>> Some fsx-linux log is:
>>
>> READ BAD DATA: offset = 0x2771b, size = 0xa28e
>> OFFSET ?GOOD ? ?BAD ? ? RANGE
> Are you sure that the LTP is correct? ?It wouldn't be the first time it
> wasn't...

hmmm, I read the source again, IMHO it is correct.

>
> thanks,
>
> greg k-h
>

One more findings: If I add "return" at the beginning of domapwrite,
no fail found yet.

Regards,
Jisheng
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