Here's David's patch, which introduces new infrastructure for this purpose: https://lore.kernel.org/all/158204559631.3299825.5358385352169781990.stgit@xxxxxxxxxxxxxxxxxxxxxx/ I'm wondering if this could be added to fsnotify/fanotify instead? After all, the events are very similar, except it's changes to the mount tree, not the dentry tree that need to be reported. Thanks, Miklos
