On Sat, 2 May 2009 00:27:30 +0200 "Rafael J. Wysocki" <rjw@xxxxxxx> wrote: > From: Rafael J. Wysocki <rjw@xxxxxxx> > > The OOM killer is not particularly useful during system-wide power > transitions, so do not use it if such a transition is in progress. > so... I think what you've done here is to arrange for the page allocator to return NULL if we're hibernating rather than oom-killing, yes? Does the same apply to suspending? If so, why? I think this is an OK change, as long as the only thing which is allocating memory is hibernation itself. If random processes are still doing random memory allocations at this time then their failed memory allocation could be just as fatal as an oom-killing. Moreso if they're s/bin/init or whatever. So is it the case that pm_transition_in_progress() is only true during the highly-constrained hibernation process? After everything is frozen? If so, there are alternatives - the calling process could set PF_DONT_KILL_ANYONE_FOR_ME, or could pass __GFP_DONT_KILL_ANYONE_FOR_ME. Those might be worse alternatives, dunno - I'm just asking probing questions ;) -- To unsubscribe from this list: send the line "unsubscribe kernel-testers" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
