Re: inotify and sysfs

From: Lukas Jelinek <>
Date: Fri, 08 Oct 2010 09:48:47 +0200

  Hi Andruk,
this mailing list is mainly for discussion about incron and inotify-cxx.
It may be used for discussion about inotify too but because inotify is
an integral part of the kernel its better to communicate with the
appropriate developers/maintainers directly. We can help you some way
but we can't resolve any problems related to the inotify implementation
the rather that the problems are often in other parts of the kernel than
inotify. sysfs is a "non-standard" filesystem. If the sysfs file you
need to monitor doesn't generate inotify events you can't use inotify to
monitor it. Please contact the sysfs maintainers to consult why it's
implemented this way and whether there is possibility to change it in
the future kernel releases.

incron/inotify-cxx developer, mailing list administrator

> On Mon, Oct 4, 2010 at 9:50 AM, Mike Frysinger <
> <>> wrote:
> On Monday, October 04, 2010 03:50:27 Andruk Tatum wrote:
> > I am trying to monitor a file in sysfs (
> > /sys/devices/platform/hp-wmi/tablet to be exact). According to the
> > documentation I've read, inotify does have some limitations on
> slightly
> > exotic filesystems, but nothing really seems to mention what those
> > limitations actually are. What are those limitations for recent
> ( >2.6.32
> > ) kernels? What would be the best way to monitor a sysfs file for
> > changes?
> this is a project for incron, not inotify in general. e-mail lkml
> and read
> the MAINTAINERS file in the linux kernel source to find out the actual
> maintainers of inotify.
> -mike
> Hi everybody,
> As Mike pointed out, this list is apparently only for incron, not for
> general discussion of inotify. For whoever is in charge of the
> website, you may want to change the description of this list, which
> currently reads "incron has its own mailing list now. You can use it
> for discussions about incron, inotify-cxx and *inotify*, requesting
> new features, solving problems etc. Instructions for use are located
> on the appropriate page." (source: the entry titled "2007-05-16 ::
> incron mailing list" on
> <> ). You
> may want to consider changing the title of that post so beginners
> (like me) don't get confused.
> Thanks for your attention.
> -- Andruk
Received on Tue Jun 05 2012 - 22:14:21 CEST

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