Re: [PATCH 1/9] task_struct: add PF_NONOTIFY for fanotify to use

From: Evgeniy Polyakov
Date: Fri Aug 28 2009 - 18:36:35 EST


On Fri, Aug 28, 2009 at 02:55:42PM -0400, Eric Paris (eparis@xxxxxxxxxx) wrote:
> Since fanotify opens file descriptors inside the kernel for it's listeners
> it needs a way to make sure that 2 fanotify listeners, both which listen to
> open events do not continuously see each others open events (and get into a
> livelock reporting on each other's activity). This fix is to create a new
> tast_struct flags called PF_NONOTIFY. If this flag is set in a task no
> fanotify events will be generated for that task. fanotify will set the
> flag before and open call and will clear it immediately after.

Is there a way to get old-school notifications with the object
information instead of opened file desriptor, which may suffer rlimit
problems and scalability issues with too many opened/closed descriptors?

Evgeniy Polyakov
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at