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kern/38270: spurious OOM due to trylock
>Synopsis: spurious OOM due to trylock
>Arrival-Date: Fri Mar 21 06:00:01 +0000 2008
>Originator: YAMAMOTO Takashi <yamt%mwd.biglobe.ne.jp@localhost>
>Release: NetBSD 4.99.55
consider that we have enough free pages but little swap.
1. uvm_analloc fails due to vm_map trylock failure.
2. uvm_reclaimable returns false. while we have plenty of
free pages, it doesn't mean we have reclaimable pages.
3. now the faulting process dies saying out of swap.
or don't assume that uvm_analloc failure is always due to
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