TAKE - fix invis I/O

[Dean Roehrich <roehrich@xxxxxxx>]

Date:  Mon Mar 10 09:02:33 PST 2003
Workarea:  clink.americas.sgi.com:/data/clink/a67/roehrich/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:141339a
linux/fs/xfs/linux/xfs_lrw.c - 1.179
        - generic_file_read() and generic_file_write_nolock() will update linux
          inode timestamps.  For Invis I/O we have to undo those timestamp 
updates.
          Also, in xfs_write, do the xfs_inode timestamp update _after_ the 
write,
          rather than before.