From: Eric Sandeen <sandeen@sgi.com>
Message-Id: <200206241827.g5OIRHG16818@stout.americas.sgi.com>
Date: Mon, 24 Jun 2002 13:27:17 -0500
Subject: TAKE - fix mount -o remount,noatime & other mounting bits
Sender: owner-linux-xfs@oss.sgi.com
Precedence: bulk

Started out as just making "mount -o remount,noatime" work on XFS, to
make it easier to get this flag set on the root fs of my laptop. :)
(before, simply adding "noatime" to the rootfs flags in fstab did not
work, since linvfs_remount was a no-op for all but "-o remount,r[o,w]").

Also some general cleanup of mount flags etc, see below.

Remounting could still use some more work; you can, for example, specify a new
logdev as a remount parameter, and XFS won't complain.  (It won't change
the logdev, but it won't complain, either).

Ideally, XFS should allow remounting as many options as possible, and
complain if a non-remountable option is specified with MS_REMOUNT...

Date:  Mon Jun 24 11:25:14 PDT 2002
Workarea:  stout.americas.sgi.com:/localhome/src/sandeen/2.4.x-xfs/workarea-alwaysclean

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


Modid:  2.4.x-xfs:slinx:122231a
linux/fs/xfs/xfsidbg.c - 1.187
	- add more mount flag names to xmount output

linux/fs/xfs/xfs_vfsops.c - 1.356
	- Don't look for 32BITINODES in args; just set it directly

linux/fs/xfs/linux/xfs_super.c - 1.184
	- Remove XFS mount opt flags that are handled in the Linux VFS: noatime, rw, ro
	  Don't assign MS_RDONLY VFS flag to xfs args flags
	  Don't fake out 32BITINODES as an argument, just default it later
	  Message about "osyncisdsync" going away
	  Rework linvfs_remount to allow modification of "noatime"