linux-ext4 - Re: Fwd: can't get e4defrag to work

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Date:	Tue, 03 Feb 2009 17:02:52 +0900
From:	Akira Fujita <a-fujita@...jp.nec.com>
To:	Derkjan de Haan <haanjdj@...il.com>
CC:	linux-ext4@...r.kernel.org
Subject: Re: Fwd: can't get e4defrag to work

Hi Derkjan,

Derkjan de Haan wrote:
> I would like to report the following issues:
> 
> - the patch doesn't apply cleanly to 2.6.29-rc3:
> 
> Applying patch patches/1
> patching file fs/ext4/Makefile
> patching file fs/ext4/defrag.c
> patching file fs/ext4/ext4.h
> Hunk #1 succeeded at 303 (offset 10 lines).
> Hunk #2 succeeded at 312 with fuzz 2 (offset -2 lines).
> Hunk #3 succeeded at 1033 (offset 9 lines).
> patching file fs/ext4/ext4_extents.h
> patching file fs/ext4/extents.c
> patching file fs/ext4/ioctl.c
> Hunk #2 succeeded at 215 (offset -11 lines).
> 
> Applying patch patches/2
> patching file fs/ext4/defrag.c
> 
> Now at patch patches/2

Defrag pathces applied cleanly to the ext4 patch queue
(7554f240866634a3b5394aced79e1768b4b1f3bf) without any hunks.

[root@...086 KERN]# patch -d linux-2.6.29-rc3 -p1 < 1.patch
patching file fs/ext4/Makefile
patching file fs/ext4/defrag.c
patching file fs/ext4/ext4.h
patching file fs/ext4/ext4_extents.h
patching file fs/ext4/extents.c
patching file fs/ext4/ioctl.c

Maybe your ext4 patch queue was not the latest version.

> 
> - I just found out e4defrag needs to be compiled with the -lm flag due
> to the powf function being used.

Yes.  I should have mentioned it in advance.

> - When compiling ext4 as a module, the kernel build fails on this error:
> 
> ERROR: "fget_light" [fs/ext4/ext4.ko] undefined!
> make[1]: *** [__modpost] Error 1
> make: *** [modules] Error 2
> 

Thank you for reporting.
I will use fget() and fput() in the next version instead.

Regards,
Akira Fujita
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