[Xen-devel] Re: Xen and reiser4

[Ming-Wei Shih <xming@xxxxxxxxxxxxxxxxx>]

> > > Hi all
> > >
> > > Thanks to Milan I am able to get further with xen and reiser4
> > >
> > > - In swap line 6 and 7 status_flags.c
> > >
> > >   #include <linux/bio.h>
> > >   #include <linux/page-flags.h>
> > >
> > >
> > > - PACKED is redefined, but the definitions are the same, so the gcc 
> > > warning can be ignored IMO
> > >    dformat.h:#define PACKED __attribute__((packed))
> > >    xen.h:#define PACKED __attribute__ ((packed))
> >  
> Yup, these 2 are the same, I just didn't recall whether they were
> exactly the same.  And I renamed reiser4's definition (and its usage
> inside reiser4) because the messages caused by it somehow prevented me
> from seeing the actual error  :) 
>
> > > however during linking I get this, and I could'nt find 
> > > perthread_pages_count anywher in the kernel
> > > src tree
> > >
> > >   LD      init/built-in.o
> > >   LD      .tmp_vmlinux1
> > > fs/built-in.o(.text+0x37701): In function `carry':
> > > : undefined reference to `perthread_pages_count'
> > > fs/built-in.o(.text+0x3771e): In function `carry':
> > > : undefined reference to `perthread_pages_reserve'
> > > fs/built-in.o(.text+0x37821): In function `carry':
> > > : undefined reference to `perthread_pages_count'
> > > fs/built-in.o(.text+0x3782f): In function `carry':
> > > : undefined reference to `perthread_pages_release'
> > > make: *** [.tmp_vmlinux1] Error 1
> >  
> Now this is strange.  In my sources with xen+reiser4, I get these three
> occurences which are defining this symbol:
>
> | ./include/linux/gfp.h:int  perthread_pages_count(void);
> | ./mm/page_alloc.c:int perthread_pages_count(void)
> | ./mm/page_alloc.c:EXPORT_SYMBOL(perthread_pages_count);
>
> (where the first is defining the function for use in other files, the
> second will be followed by the actual code of the function, and the
> third exports the function as a symbol which is callable by other
> modules)
>
> I don't think xen doesn't use page_alloc.c (in addition, it got built in
> my xen tree), so maybe you want to try a "make mrproper"? (put backup
> your .config before this, or do a "make clean"...)

No matter what I do (mrproper, different reiser4 patches, untar from 
clean src+patch) I always
get this error on 2 machines, clean 2.6.9 without patches builts 
correctly. Any clues?
TIA

Ming-Wei




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