GNU bug report logs - #21432
25.0.50; file-notify-rm-watch (inotify) errors if watched dir is deleted

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From: Tassilo Horn <tsdh <at> gnu.org>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: michael.albinus <at> gmx.de, 21432 <at> debbugs.gnu.org
Subject: bug#21432: 25.0.50; file-notify-rm-watch (inotify) errors if watched dir is deleted
Date: Tue, 15 Sep 2015 07:53:34 +0200

Eli Zaretskii <eliz <at> gnu.org> writes:

>> Done, however the descriptors still don't become invalid when
>> deleting the parent directory of the watched file or directory.  I
>> guess, that's a problem in the inotify and TRAMP implementations
>> then.
>
> No, I think it's a problem with our mental model of what happens.  The
> file notifications use the Emacs event loop, and Emacs won't check for
> events until it's idle.  So calling file-notify-valid-p as part of the
> test ends up doing that _before_ the directory deletion notification
> is read by Emacs and invalidates the watch.

Yes, you are right.  Michael already fixed the tests by waiting for the
file notifications before calling `file-notify-valid-p' and then we get
the expected results (well, not yet with remote files).

Bye,
Tassilo

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