From owner-freebsd-hackers  Sat Sep 22 11:53: 4 2001
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Subject: Re: any reason to use m_devget in the "dc" driver ?
In-Reply-To: <200109220558.HAA64949@info.iet.unipi.it> from Luigi Rizzo at "Sep 22, 2001 07:58:25 am"
To: luigi@info.iet.unipi.it (Luigi Rizzo)
Date: Sat, 22 Sep 2001 11:53:02 -0700 (PDT)
Cc: gallatin@cs.duke.edu, hackers@freebsd.org
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From: wpaul@FreeBSD.ORG (Bill Paul)
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> I probably missed some emails ?

And you can't go back and read them from the archives because...?

> In any case i was only concerned about the additional copy
> done by m_devget when the controller can already DMA into
> an mbuf, and there are no alignment constraints.

I don't know what you're talking about. There are no cases where
we use m_devget() when there *aren't* any alignment constraints.
Show us exactly what line of code you're talking about please,
otherwise drop this topic, because it's been discussed to death
and I'm tired of somebody trying to argue it with me every few
months.

-Bill


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