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Date: Mon, 18 Nov 2013 11:36:25 +0200
From: Andriy Gapon <avg@FreeBSD.org>
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To: Steven Hartland <killing@multiplay.co.uk>, freebsd-stable@FreeBSD.org
Subject: Re: Help with filing a [maybe] ZFS/mmap bug.
References: <20967.760.95825.310085@gargle.gargle.HOWL><51E80B30.1090004@FreeBSD.org><20968.10645.880772.30501@gargle.gargle.HOWL><520202E5.30300@FreeBSD.org><20994.55913.93606.436124@gargle.gargle.HOWL><FEE7BDCF7F494EE1BA0BE9424275AA91@multiplay.co.uk>
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 <4EB902F80CE84DD2BF36C85EF4CE8EF8@multiplay.co.uk>
 <5284B8A5.8040604@FreeBSD.org> <52889105.7040404@FreeBSD.org>
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on 18/11/2013 11:23 Steven Hartland said the following:
> ----- Original Message ----- From: "Andriy Gapon" <avg@FreeBSD.org>
> To: "Steven Hartland" <killing@multiplay.co.uk>; <hartzell@alerce.com>;
> <freebsd-stable@FreeBSD.org>
> Sent: Monday, November 18, 2013 8:42 AM
> Subject: Re: Help with filing a [maybe] ZFS/mmap bug.
> 
> 
>> on 17/11/2013 17:53 Steven Hartland said the following:
>>>
>>> ----- Original Message ----- From: "Andriy Gapon" <avg@FreeBSD.org>
>>>> - vm_page_clear_dirty(pp, off, nbytes);
>>>> + if (nbytes != 0)
>>>> + vm_page_clear_dirty(pp, off, nbytes);
>>>>  }
>>>>  break;
>>>
>>> Thanks Andriy, looking to test this here but 8.3 doesn't have a page_busy
>>> method in zfs_vnops.c so I'm not sure how to proceed on this?
>>
>> Does it have vm_page_clear_dirty call?
> 
> Nope.
> 

Then you do not have this bug.  It's possible that you might have a different
bug, though.  Perhaps merge the relevant change from stable/8 and then apply the
patch?..


-- 
Andriy Gapon