Re: Re: Hotplug events during sleep transition

[Greg KH <greg@kroah.com>]

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On Sat, Dec 24, 2005 at 10:11:13AM -0500, Alan Stern wrote:
> On Fri, 23 Dec 2005, Greg KH wrote:
> 
> > On Fri, Dec 23, 2005 at 04:22:44PM -0500, Alan Stern wrote:
> > > On Fri, 23 Dec 2005, Pavel Machek wrote:
> > > 
> > > > Well, if you can find some elegant solution in the core, I think thats
> > > > the best way.
> > > > 
> > > > You could set system_state to "suspending" or something like that, and
> > > > just if() out notifications in that case.
> > > 
> > > How about simply adding a call to try_to_freeze() somewhere inside 
> > > kernel/kmod.c:____call_usermodehelper()?  That ought to do pretty much 
> > > what I want, in theory.  The hotplug processes would get frozen before 
> > > /sbin/hotplug is exec'ed.
> > 
> > On modern distros, /sbin/hotplug is set to NULL, so this isn't an issue.
> > We use netlink to send the data out, so this might not even be a problem
> > anymore...
> 
> Indeed it might not.  On my older FC3 system I end up with unwanted 
> processes, but under FC4 that doesn't happen.  (Note however that even on 
> the FC4 system, /sbin/hotplug is not empty and /proc/sys/kernel/hotplug 
> does point to /sbin/hotplug.)

I said "modern" :)
Rawhide should have this set to NULL, as well as SuSE, Gentoo unstable
and Debian unstable.

thanks,

greg k-h

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