Re: crash in pipe_create()

[enami tsugutomo <enami%sm.sony.co.jp@localhost>]

Andrew Doran <ad%netbsd.org@localhost> writes:

>                                                       I think it would be
> good for pool_cache_get() to invalidate the pool_cache if it cannot fetch
> an item from the pool. This would flush per-CPU caches back to the pool.
> 
>       item = pool_get(&pc->pc_pool, PR_NOWAIT);
>       if (__predict_false(item == NULL) && (flags & PR_WAITOK) != 0) {
>               mutex_enter(&pc->pc_lock);
>               inv = ratecheck(&pc->pc_invaltime, &pool_cache_invaltime);
>               mutex_exit(&pc->pc_lock);
>               if (inv) {
>                       pool_cache_invalidate(pc);
>               }
>               item = pool_get(&pc->pc_pool, PR_WAITOK);
>       }

Sounds cool.  (But pool_cache_invalidate() doesn't invalidate per CPU
cache does it?)

enami.