On Pá 23-12-05 16:22:44, 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. > > I haven't actually tried it yet, so maybe there's a hidden gotcha. That would mean quite a lot of "extra" events delivered to userspace, no? ... no, actually not, that should be okay. "resume during suspend" events will be discarded, because they'll not make it into on-disk image, so userspace will get single unplug/replug events after resume. That's okay. OTOH I do not think try_to_freeze() is going to make it. Process freezing is one-time action, so if you start new thread, try_to_freeze() will not attempt to freeze it. Pavel -- Thanks, Sharp!
