linux-kernel - RE: [PATCH 2/2] mmc: core: Support packed command for eMMC4.5 device

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Message-id: <004901cca4cc$f18d6180$d4a82480$%jun@samsung.com>
Date:	Thu, 17 Nov 2011 11:02:21 +0900
From:	Seungwon Jeon <tgih.jun@...sung.com>
To:	merez@...eaurora.org
Cc:	"'S, Venkatraman'" <svenkatr@...com>, linux-mmc@...r.kernel.org,
	'Chris Ball' <cjb@...top.org>, linux-kernel@...r.kernel.org,
	linux-samsung-soc@...r.kernel.org, kgene.kim@...sung.com,
	dh.han@...sung.com
Subject: RE: [PATCH 2/2] mmc: core: Support packed command for eMMC4.5 device

Maya Erez wrote:
> >> >>> >> >> > +       if (rqc)
> >> >>> >> >> > +               reqs = mmc_blk_chk_packable(mq, rqc);
> >> >>>
> >> >>> It would be best to keep all the calls to blk_fetch_request in the
> >> same
> >> >>> location. Therefore, I suggest to move the call to
> >> mmc_blk_chk_packable
> >> >>> to
> >> >>> mmc/card/queue.c after the first request is fetched.
> >> >>
> >> >> At the first time, I considered that way.
> >> >> I'll do more, if possible.
> > I considered more.
> > I think that mmc_blk_chk_packable would rather be called only for r/w type
> > than all request type(e.g. discard, flush).
> >
> mmc_blk_chk_packable can check the cmd_flags of the request to verify it's
> not a flush/disacrad etc. In such cases will not pack.
Yes. It must be checked, but omitted.
I already have added this check. It will be applied next.

Thanks,
Seungwon Jeon.
> 
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