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Subject: Re: Mbuf reference count
From: Rui Paulo <rpaulo@FreeBSD.org>
In-Reply-To: <BF3270C86E8B1349A26C34E4EC1C44CB2C819B1D@CMEXMB1.ad.emulex.com>
Date: Sun, 12 Jan 2014 19:22:47 -0800
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References: <BF3270C86E8B1349A26C34E4EC1C44CB2C819B1D@CMEXMB1.ad.emulex.com>
To: Venkata Duvvuru <VenkatKumar.Duvvuru@Emulex.Com>
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On 2 Jan 2014, at 06:26, Venkata Duvvuru =
<VenkatKumar.Duvvuru@Emulex.Com> wrote:

> Hi,
> Is there a way to increase the reference count of mbuf? I see there is =
a ref count for external storage (m_ext) but couldn't find one for =
!M_EXT case.

The idea was to reference count the mbufs with external storage so that =
m_copym() would avoid copying.  Why do you need to reference count an =
mbuf?  mbufs are usually short lived and I haven't encountered any =
situation yet where reference counting an mbuf would help.

--
Rui Paulo