Bug#646957: "mount -o remount,rw" has no effect with kFreeBSD 9.0

[Benjamin Kaduk <kaduk@MIT.EDU>]

On Sat, 29 Oct 2011, Robert Millan wrote:

> 2011/10/29 Aurelien Jarno <aurelien@aurel32.net>:
> > Which seems to be kfreebsd-9 related, not busybox related.
> >
> > This is very likely to be the same bug than the one fixed in kfreebsd-8
> > by 107_mount_update.diff. This patch has been disabled in kfreebsd-9
> > (probably because this part has been changed upstream), so this is where
> > to look first.
>
> Uhm... ISTR it's me who removed that patch during the upgrade.  In any
> case, I re-checked, and it seems to me that the code that made iovec
> arguments a requirement is no longer present.

Err, I don't see any iovec arguments in the 107_mount_update.diff
that google finds for me as [Glibc-bsd-commits] r3165.

> I don't have time to look deeper right now though :-(
>
> > Until we are sure it's not a kfreebsd-9 bug, it's better to keep the bug
> > assigned to kfreebsd-9.

Since stock freebsd is documented as requiring -u ("update") when changing 
the mount options of an already-mounted filesystem, it seems very likely 
to be a kfreebsd bug.

-Ben Kaduk