Re: reiser4 as a module

[Christian Stroetmann <stroetmann@ontolinux.com>]

  Thanks for further informations.

On the 22.10.2010 17:46, Viji V Nair wrote:
> Hi
>
> On Fri, Oct 22, 2010 at 6:23 PM, Christian Stroetmann
> <stroetmann@ontolinux.com>  wrote:
>>   Hola;
>>
>> On the 22.10.2010 12:02, Viji V Nair wrote:
>>> Hi,
>>>
>>> I have been trying to build reiser4 as a module, but the module which
>>> is getting compiled having the "symbol" issue.
>>>
>>> <snip>
>>> reiser4: Unknown symbol lzo1x_1_compress
>>> reiser4: Unknown symbol might_fault
>>> reiser4: Unknown symbol mutex_lock_nested
>>> reiser4: Unknown symbol zlib_deflate
>>> reiser4: Unknown symbol writeback_inodes_wbc
>>> </snip>
>> You mentioned this problem in the thread [1] as well.
>> Check your pathes.
> Nobody replied to that thread :). I am planning to push reiser4 in the
> fedora official repository.
> I have checked the paths, looks fine. Even I tried with some other
> modules (cifs) and those are getting compiled and loads with out any
> issue.
This is surprising. Maybe it is in the scripts of the compilation 
toolchain (configure, make, and so on).
>>> I could see from the reiser4 2.6.34 patch that it is adding
>>> "EXPORT_SYMBOL" to few files in fs&    mm directories of the kernel
>>> source tree. Can we have all these symbols defined in the core source
>>> tree of resier4 also? Do we have a patch for this already?
>> For what? See above.
I still believe that they belong to the files in the fs and mm 
directories of the kernel source tree.

Also somehow fuzzy, the fault messages you have sent are referencing 
existing items that are contained in the unpatched/original libraries. 
Are the missing symbols related with the ones that are included in the 
R4 2.6.34 patch?

So, maybe you should take a second and wait for the comments by the 
maintainer about the "EXPORT_SYMBOL" point.
>> Btw.: To be honest, I find it a little bit off-topic, because it's about
>> compiling a kernel module and not a R4 issue.
> This was working fine untill 2.6.10 patch. You can find the same issue
> in Open Suse/Ubuntu/Mandriva mailing lists.
Ah, okay. Good to know this.
> The missing symbols need to exported in the module level, I think. If
> I compile the kernel completely everything works fine, but that is not
> I want. I dont want to disturb the stock kernel.
Okay.
I still guess the problem is in the scripts that compile the module, if 
you say that compiling kernel modules with other file systems and the 
complete kernel with R4 support works correctly. Compare the scipts that 
are used to compile the complete kernel with R4 support with the scripts 
of the R4 kernel module compilation. There must be the searched difference.
>>> Thanks
>>> Viji
>> [1] Compilation Issue - Reiser4
>> http://www.spinics.net/lists/reiserfs-devel/msg02508.html
>>
>> Have fun
>> Christian O>-<     *<:o)   _(D)>-<
>>
> Thank you so much for your support
>
> Viji

Good luck
Christian O>-<   *<:o)   _(D)>-<