Comment 36 for bug 537133

https://launchpadlibrarian.net/40758849/mountall.c.is_root.patch and https://launchpadlibrarian.net/51866427/mountall_2.15_child-watch-list-race-condition-fix.patch have been proposed as patches but subsequent discussion indicates some further work on them is needed.

Could someone post an updated patch for proposed addition to mountall that incorporates both those patches and other changes in follow up comments deemed appropriate?