SUMMARY: ncpfs-problem with 2.4.21 kernel

Original problem:

> We have added ram to two of our servers to 2.5Gb and I then used the
> opportunity to compile and install a new kernel (2.4.21).
> 
> However now I have a problem with ncpfs as the following illustrates:
> 
> > sudo modprobe ncpfs
> /lib/modules/2.4.21/kernel/fs/ncpfs/ncpfs.o: unresolved symbol
> kunmap_high
> /lib/modules/2.4.21/kernel/fs/ncpfs/ncpfs.o: unresolved symbol
> highmem_start_page
> /lib/modules/2.4.21/kernel/fs/ncpfs/ncpfs.o: unresolved symbol
> kmap_high
> /lib/modules/2.4.21/kernel/fs/ncpfs/ncpfs.o: insmod
> /lib/modules/2.4.21/kernel/fs/ncpfs/ncpfs.o failed
> /lib/modules/2.4.21/kernel/fs/ncpfs/ncpfs.o: insmod ncpfs failed

Michael Stone was the only one who replied and his reply was:
============
Try setting the 64G high memory option.  High memory generally sucks
in the 2.4
kernel, and it only gets worse the more ram you add.  Plain weird
stuff starts
to happen.

# CONFIG_HIGHMEM4G
CONFIG_HIGHMEM64G=y

If setting the option doesn't help, I would try a different kernel.  I
have had
really good luck with 2.4.18 in machines with a lot of memory.  They
are
supposed to be redoing all the high mem stuff for the 2.6 kernel.  It
might evenbe worthwhile to see if you can find a stable enough version
of 2.5.
===================

I changed two things: The  64G switch as Michael suggested and the I
compiled ncpfs into the kernel.  Now ncpmount is working again.
Because I did not have a test machine with similar setup, I could not
waste time to try the changes one by one to determine which one made
the difference or whether it was the combination.

Thanks Michael.

Regards.
Johann
-- 
Johann Spies          Telefoon: 021-808 4036
Informasietegnologie, Universiteit van Stellenbosch

     "He hath not dealt with us after our sins; nor rewarded
      us according to our iniquities. For as the heaven is 
      high above the earth, so great is his mercy toward 
      them that fear him. As far as the east is from the 
      west, so far hath he removed our transgressions from 
      us."     Psalms 103:10-12 
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