From: J Freyensee <james_p_freyensee@linux.intel.com>
To: linux-mmc@vger.kernel.org
Subject: Re: bounce_sg and sg in mmc_queue
Date: Thu, 22 Sep 2011 09:35:04 -0700 [thread overview]
Message-ID: <4E7B63B8.2000100@linux.intel.com> (raw)
In-Reply-To: <4E7A2C6E.70408@linux.intel.com>
On 09/21/2011 11:26 AM, J Freyensee wrote:
> Hello:
>
> Could anyone tell me in struct mmc_queue, what is the difference between
> 'struct scatterlist *bounce_sg' and 'struct scatterlist *sg' is?
>
> I see 'bounce_sg' get used to copy data from/to the buffer upon a host
> read/write operation so I assume 'bounce_sg' points to the most recent
> data from a host controller read/write operation.
>
If someone actually knows this, I will send up a patch documenting this
in the code. I think some of the mmc code could use a little
documentation??
> Thanks for the help.
>
--
J (James/Jay) Freyensee
Storage Technology Group
Intel Corporation
prev parent reply other threads:[~2011-09-22 16:29 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-21 18:26 bounce_sg and sg in mmc_queue J Freyensee
2011-09-22 16:35 ` J Freyensee [this message]
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