root crontab bug? (Undocumented find -mount option)

[Steven S. Dick]

In article <2802 at brchh104.bnr.ca> ray at kea.am.dsir.govt.nz (Ray Brownrigg) writes:
[stuff deleted]
>What is this leading up to? Well I believe that an undocumented option to
>find will alleviate the problem.
...
>The -mount option to find appears to restrict the activities of the
>command to the mounted partition(s) specified in the pathname-list. Thus
>the other common root crontab entry would be written something like:
>
>15 2 * * * find / /usr /home -mount -name core -atime +1 -exec rm {} \;
>
>The mount option seems to be commonly available - I first came across it
>on an AT&T 3B2 running SVR3.1!

This sounds an awful lot like the documented -xdev option.
Is there any difference?

	Steve
ssd at engr.ucf.edu