TAKE - make "osyncisdsync" the default

[Eric Sandeen <sandeen@sgi.com>]

"osyncisdsync" makes us go faster, and it's how other Linux
filesystems are set up, anyway - so make it the default.

If you don't want this behavior, use the aptly-named
"osyncisosync" option to get "true" (but slower) o_sync.

"osyncisdsync" is still accepted as a mount option, but it's
a no-op now.


Date:  Fri Feb 15 14:48:36 PST 2002
Workarea:  stout.americas.sgi.com:/localhome/eric/2.4.x-xfs/workarea-reallyclean

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


Modid:  2.4.x-xfs:slinx:111946a
linux/fs/xfs/xfs_vfsops.c - 1.336
	- replace XFSMNT_OSYNCISDSYNC handling with XFSMNT_OSYNCISOSYNC

linux/fs/xfs/xfs_clnt.h - 1.26
linux/fs/xfs/xfs_mount.h - 1.133
	- new XFSMNT_OSYNCISOSYNC flag (replaces XFSMNT_OSYNCISDSYNC)

linux/fs/xfs/linux/xfs_lrw.c - 1.122
	- Make osyncisdsync the default, osyncisosync (XFS_MOUNT_OSYNCISOSYNC)
	  overrides.

linux/fs/xfs/linux/xfs_super.c - 1.157
	- Handle new osyncisosync mount option, osyncisdsync is the default,
	  so handling it is a no-op.