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Date:      Tue, 23 Sep 2008 17:58:21 -0700
From:      Marcel Moolenaar <xcllnt@mac.com>
To:        Peter Grehan <grehan@freebsd.org>
Cc:        ppc@freebsd.org
Subject:   Re: ZFS race condition?
Message-ID:  <A894E37E-BB78-4BA7-A779-90587E2C4CD3@mac.com>
In-Reply-To: <48D98E2C.1090606@freebsd.org>
References:  <675B0620-77FE-4B99-AC98-C0002F8045F7@mac.com> <48D98E2C.1090606@freebsd.org>

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On Sep 23, 2008, at 5:47 PM, Peter Grehan wrote:

> Hi Marcel,
>
>> Anyone else playing with ZFS on PowerPC seeing this?
>
> It's on my todo list but you're a long way ahead of me :)

I just happened to have a disk that I could use (one I use
only for the release builds)...

> You could try the 'null' stwcx in the context switch asm to flush  
> any pending reservations - I think I may have sent you mail about  
> this a long while back. This may result in two sections of code both  
> thinking they have a lock.

Good call. I looked at that as part of the SMP work, but
forgot about it already...

Thanks,

-- 
Marcel Moolenaar
xcllnt@mac.com






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