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   From: J=F6rn Engel <joern@wohnheim.fh-wedel.de>
   Date: Sat, 31 May 2003 08:48:51 +0200

   > No locking needed whatsoever.  I hope it can work :-)
   =

   How about preemption?  zlib operations take their time, so at least =
on
   up, it makes sense to preempt them, when not in softirq context.  Ca=
n
   this still be done lockless?

You'll need to disable preemption.