> Date: Sat, 27 Feb 2016 10:55:42 +0100
> From: Anders Lindgren <andlind@gmail.com>
> Cc: 22814@debbugs.gnu.org
>
>  A general support for polling in filenotify.el is not foreseen, too much
>  effort. But I believe, in the auto-revert case Emacs works already this
>  way. When file-notify-add-watch returns nil, auto-revert falls back to
>  polling (to be tested, I'll I add a test).
>
> This sounds like the right thing to do.
>
> The main question is why Emacs hangs when opening a large desktop (which is why I didn't want this bug to
> be closed), even though the file notify system has this fallback.

Can you debug this?