Reiser4 for Linux-2.6.27

Reiser4 for Linux-2.6.27

[Edward Shishkin]

Hello everyone.

This patch is based on reiser4-for-2.6.25 and contains the following
changes:

1) use trylock_page instead of !TestSetPageLocked (Mathieu Bélanger);
2) use file_remove_suid() instead of remove_suid() (Mathieu Bélanger);
3) fix the problem with gzip1 compression in the case when reiser4 is
   compiled as a module;
4) use __set_page_dirty_nobuffers() instead of reiser4_set_page_dirty();
5) update reiser4_set_page_dirty_internal() to take into account the latest
   changes in vfs.

(4) and (5) fix annoying oom under heavy workload (reproducible with
dbench 190).

The stuff for download can be found here:
http://www.kernel.org/pub/linux/kernel/people/edward/reiser4/reiser4-for-2.6/

Thanks,
Edward.
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Re: Reiser4 for Linux-2.6.27

[callx]

I was trying the patch and  get this error.. 

Kernel: arch/x86/boot/bzImage is ready (#1) 
   Building modules, stage 2 
   MODPOST 45 modules 
ERROR: "swapper_space" [fs/reiser4/reiser4.ko] undefined! 
make[1]: *** [__modpost] Error 1 
make: *** [modules] Error 2 

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Re: Reiser4 for Linux-2.6.27

[Jeff Mahoney]

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callx wrote:
> I was trying the patch and  get this error.. 
> 
> Kernel: arch/x86/boot/bzImage is ready (#1) 
>    Building modules, stage 2 
>    MODPOST 45 modules 
> ERROR: "swapper_space" [fs/reiser4/reiser4.ko] undefined! 
> make[1]: *** [__modpost] Error 1 
> make: *** [modules] Error 2 

This one looks like it's due to swapper_space not being exported. I
don't know if that's on purpose or just overlooked since all the current
users of page_mapping() are in core code.

- -Jeff

- --
Jeff Mahoney
SUSE Labs
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Re: Reiser4 for Linux-2.6.27

[Edward Shishkin]

callx wrote:
> I was trying the patch and  get this error.. 
>
> Kernel: arch/x86/boot/bzImage is ready (#1) 
>    Building modules, stage 2 
>    MODPOST 45 modules 
> ERROR: "swapper_space" [fs/reiser4/reiser4.ko] undefined! 
> make[1]: *** [__modpost] Error 1 
> make: *** [modules] Error 2 
>   

I have updated the stuff, please, try again.
Thanks.

Re: Reiser4 for Linux-2.6.27

[Edward Shishkin]

Jeff Mahoney wrote:
> callx wrote:
> > I was trying the patch and  get this error..
>
> > Kernel: arch/x86/boot/bzImage is ready (#1)
> >    Building modules, stage 2
> >    MODPOST 45 modules
> > ERROR: "swapper_space" [fs/reiser4/reiser4.ko] undefined!
> > make[1]: *** [__modpost] Error 1
> > make: *** [modules] Error 2
>
> This one looks like it's due to swapper_space not being exported. I

Yup, I have shoved this to reiser4 with page_mapping(),
which is too generic in our case.
It seems, we need to patch vfs library with one more version
of set_page_dirty..

Edward.

> don't know if that's on purpose or just overlooked since all the current
> users of page_mapping() are in core code.
>
> -Jeff
>
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