Nick Piggin wrote:
> Jeff Garzik wrote:
> 

>>
>> Nope, this patch does not fix the hang.
>>
> 
> Arrgh, sorry that should be
>     if (zone->pages_scanned *>=* blah)
> 
> If you've got zero LRU pages, both sides of this should be zero, and
> we *want* all_unreclaimable to be set.


We'd better do this too, so kswapd can't take the machine down
even if it wants to.