From: "Seth, Rohit" <rohit.seth@intel.com>

This patch enables system administrators to more flexibly assign read/write
permissions to files in hugetlbfs.  Mount options are added which will
specify the uid, gid and mode of the filesystem's root directory.

This patch also enables super users to do chown/chgrp on files in hugetlbfs.

Also included in this patch is the support for uid, gid and mode command line
options for mount command for hugetlbfs.

The following mount options are added to hugetlbfs:

	uid=value gid=value mode=value

The values may be specified in hex (0xNNN), decimal or octal (0NNN).