Change monitoring with inotify is going to hit limits quickly.

I recently wanted to take a look at VSCode and it immediately shat itself over the maximum number of inotify watches being too low (the kernel I'm running restricts this to 8k for non-root users).

I then bumped the limit to the max (512k, I think, or about 7 copies of linux.git)…still no luck. Now imagine you have a Google-scale number of files.