linux-kernel - Re: ext4 ioctl(FIEMAP) bug? observed in 2.6.29.4 (32-bit x86)

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Message-ID: <4A76F941.5060006@rtr.ca>
Date:	Mon, 03 Aug 2009 10:50:41 -0400
From:	Mark Lord <lkml@....ca>
To:	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
Cc:	Linux Kernel <linux-kernel@...r.kernel.org>,
	linux-ext4@...r.kernel.org, sandeen@...hat.com
Subject: Re: ext4 ioctl(FIEMAP) bug? observed in 2.6.29.4 (32-bit x86)

Aneesh Kumar K.V wrote:
> On Sun, Aug 02, 2009 at 05:35:24PM -0400, Mark Lord wrote:
..
>> 2.6.29.4:
>> The output below shows the sequence of FIEMAP calls
>> on the single massive file.  Notice that the first call
>> returned the "LAST" flag set, despite there being many
>> many more extents after that bunch.
>>
> 
> Can you try with
> 
> commit c9877b205f6ce7943bb95281342f4001cc1c00ec
> Author: Eric Sandeen <sandeen@...hat.com>
> Date:   Fri May 1 23:32:06 2009 -0400
> 
>     ext4: fix for fiemap last-block test
..

Ahh.. good to see it already upstream, thanks.

I cannot easily reproduce the bug, so no re-test here.
And my app (hdparm) simply now ignores the LAST flag as a workaround.

Thanks
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