[OpenAFS-devel] Re: Inconsistency on Linux-S390

[Chas Williams]

In message <C1256A1B.005FCC60.00@d12mta05.de.ibm.com>,jacobi@de.ibm.com writes:
>PAGE_OFFSET of 0x80000000 for S390-32bit environments, and find a different
> mean
>for a general evaluation of the PAGE_OFFSET ... I will also speak to the
>S390-Linux

i believe this is the 'old way' of doing things.  looking at some of
the other filesystem implementations, i gather that you are supposed to
use the kmap()/kunmap() interface.  this 'hides' the page offset 
from you (as well as transparently handles config_highmem)  i dont
remember if i sent in my patches to make the 2.4 port use kmap() instead
of the page offset strangeness.  i dont know if this can be back ported to
early 2.2 kernels (which you shouldnt run for other security related reasons)