On Thursday 07 May 2009, David Rientjes wrote: > On Thu, 7 May 2009, Rafael J. Wysocki wrote: > > > OK, let's try with __GFP_NO_OOM_KILL first. If there's too much disagreement, > > I'll use the freezer-based approach instead. > > > > Third time I'm going to suggest this, and I'd like a response on why it's > not possible instead of being ignored. > > All of your tasks are in D state other than kthreads, right? That means > they won't be in the oom killer (thus no zones are oom locked), so you can > easily do this > > struct zone *z; > for_each_populated_zone(z) > zone_set_flag(z, ZONE_OOM_LOCKED); > > and then > > for_each_populated_zone(z) > zone_clear_flag(z, ZONE_OOM_LOCKED); > > The serialization is done with trylocks so this will never invoke the oom > killer because all zones in the allocator's zonelist will be oom locked. > > Why does this not work for you? Well, it might work too, but why are you insisting? How's it better than __GFP_NO_OOM_KILL, actually? Andrew, what do you think about this? -- 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
