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Date:      Thu, 8 Jul 2010 11:29:43 +0300
From:      Kostik Belousov <kostikbel@gmail.com>
To:        Andriy Gapon <avg@icyb.net.ua>
Cc:        lstewart@freebsd.org, freebsd-net@freebsd.org, bz@freebsd.org, Andre Oppermann <andre@freebsd.org>, Ming Fu <Ming.Fu@watchguard.com>
Subject:   Re: kern/123095 kern/131602 sendfile
Message-ID:  <20100708082943.GB2439@deviant.kiev.zoral.com.ua>
In-Reply-To: <4C358A01.8080206@icyb.net.ua>
References:  <7C3D15DD6E8F464998CA1470D8A322F302BB9F72@ES02CO.wgti.net> <20100707205041.GO13238@deviant.kiev.zoral.com.ua> <4C358843.5000001@freebsd.org> <4C358A01.8080206@icyb.net.ua>

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On Thu, Jul 08, 2010 at 11:19:13AM +0300, Andriy Gapon wrote:
> on 08/07/2010 11:11 Andre Oppermann said the following:
> >=20
> > Can you check whether your patch fixes the bug when you go over a real
> > network?
>=20
> As I understand the patch is not supposed to fix the bug, it's supposed t=
o catch
> it early.  I.e. get panic instead of data corruption.

Right, the patch maps the page in sf buffer read-only (on i386 only).
But note the parallel posting with m_cat() change. It is still not enough,
and I am not set up for the real network testing ATM.

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