From: Oliver Neukum <Oliver.Neukum@lrz.uni-muenchen.de>
To: linux-hotplug@vger.kernel.org
Subject: Re: multiple events
Date: Sun, 21 Jan 2001 12:33:33 +0000 [thread overview]
Message-ID: <marc-linux-hotplug-98008034904556@msgid-missing> (raw)
In-Reply-To: <marc-linux-hotplug-98007936002998@msgid-missing>
On Sonntag, 21. Januar 2001 13:29, Andrew Morton wrote:
> Oliver Neukum wrote:
> > Hi list,
> >
> > I was looking through the kmod code and was wondering about the context
> > /sbin/hotplug is run.
> >
> > It seems to be run in the context of keventd. Does this mean that there
> > can only be one instance of /sbin/hotplug at a time ?
>
> No, /sbin/hotplug is run asynchronously, so multiple instances
> can and will be run concurrently. A fix exists, but I'm still
> trying to get my head around whether there's justification
> for asking for its inclusion.
Does this mean that "add" might race with "remove" ?
On the other hand, if you go for serialisation, is there a possibilty of a
deadlock ?
device 1 -> hotplug -> module loaded -> device 2 registered -> hotplug ->
DEADLOCK
Regards
Oliver
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next prev parent reply other threads:[~2001-01-21 12:33 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-01-21 12:17 multiple events Oliver Neukum
2001-01-21 12:29 ` Andrew Morton
2001-01-21 12:33 ` Oliver Neukum [this message]
2001-01-21 12:49 ` Andrew Morton
2001-01-21 18:37 ` David Brownell
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