On Sun, Apr 14, 2019 at 09:51:38PM +0300, Amir Goldstein wrote: > But the truth is I would much rather that users have a way to mark > a subtree root and ask fanotify for events under that subtree. > As a matter of fact, I have some private POC patches that allow users to > setup a mark on a "subtree root" dentry, which really marks the super block > and keep a reference to the dentry. Than every event on that super block > is filtered with is_subdir() against the marked dentry. And that is_subdir() is protected by what, exactly? And what happens if you have many such dentries? Or, for that matter, what happens if that dentry gets invalidated?
