Re: [PATCH] libata: use single threaded work queue

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Benjamin Herrenschmidt wrote:
> On Wed, 2009-08-19 at 14:23 +0200, Jens Axboe wrote:
>> Well, that's the same thread pool suggestion that Jeff came up with.
>> And
>> I agree, that's a nicer long term solution (it's also how the per-bdi
>> flushing replacement works). The problem with that appears to be that
>> any suggested patchset for thread pools spiral into certain "but what
>> color should it be?!" death.
>>
>> I'll try and work up a simple create_threadpool() implementation, we
>> can
>> literally cut away hundreds of threads with that.
> 
> Don't we have one already ? Dave Howells slow_work or such ?

Yes, it addresses different aspect of the concurrency problem.  Might
be more suitable for ATA workqueues but definitely more costly to
convert to.  Argh...

-- 
tejun
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