TAKE - HEADS UP. KIOBUF now mount time option.

[Russell Cattelan <cattelan@xxxxxxxx>]

This removes the compile time decision and moves
it to a mount time option.

To use kiobuf's on a paticular file system use the kio option
ie
mount -t xfs -o kio /dev/<blah> /<mnt pt>
or in fstab.
/dev/<blah> /<mnt pt>  xfs rw,noauto,kio 0 0

A message will be printed out the console for all
filesystems using kiobufs.


Date:  Mon Aug 14 09:18:32 PDT 2000
Workarea:  gibble.americas.sgi.com:/export/extra/x2.4-xfs

The following file(s) were checked into:
  bonnie.engr.sgi.com:/isms/slinx/2.4.0-test1-xfs


Modid:  2.4.0-test1-xfs:slinx:72021a
linux/fs/Config.in - 1.39
        - Remove CONFIG_KIOBUF_IO option... code allways compiled in, move to 
mount flag.

linux/fs/pagebuf/page_buf.c - 1.23
linux/fs/pagebuf/page_buf_io.c - 1.22
        - Use mount flag to check for KIOBUF io.