TAKE - restore lost kdb pagebuf commands

[Steve Lord <lord@xxxxxxxx>]

Modid:  2.3.99pre2-xfs:slinx:62623a
Date:  Wed May 24 08:39:39 PDT 2000
Workarea:  clink.americas.sgi.com:/data/clink/io/lord/xfs-linux
Author:  lord

The following file(s) were checked into:
  bonnie.engr.sgi.com:/isms/slinx/2.3.99pre2-xfs

linux/kdb/modules/kdbm_pb.c - 1.19
http://oss.sgi.com/cgi-bin/cvsweb.cgi/linux-2.4-xfs/linux/kdb/modules/kdbm_pb.c.diff?r1=text&tr1=1.19&r2=text&tr2=1.18&f=h
        - Put back the pagebuf commands we lost during the kdb upgrade