TAKE - unwritten extents tweak

[Nathan Scott <nathans@xxxxxxxxxxxxxxxxxxxxxxx>]

Add back the pagebuf flag for scheduling on the data daemon.  Moving
this into just a pagebuf_iodone parameter was broken as we don't have
sufficient state in all the places we need it to make the decision.


Date:  Wed Mar 12 17:47:51 PST 2003
Workarea:  snort.melbourne.sgi.com:/home/nathans/2.4.x-xfs

The following file(s) were checked into:
  bonnie.engr.sgi.com:/isms/slinx/2.4.x-xfs


Modid:  2.4.x-xfs:slinx:141626a
linux/fs/xfs/xfs_buf.h - 1.106
linux/fs/xfs/pagebuf/page_buf.c - 1.105
linux/fs/xfs/pagebuf/page_buf.h - 1.62
linux/fs/xfs/linux/xfs_aops.c - 1.27