From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Subject: Re: [PATCH] remove ide-scsi
Date: Sun, 07 Dec 2008 14:00:48 +0300
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References: <20081203103856S.fujita.tomonori@lab.ntt.co.jp>	 <20081206120001.3580b9e3@tuna> <200812062241.35601.bzolnier@gmail.com>	 <20081206222423.04aada70@lxorguk.ukuu.org.uk>	 <493B022B.3050406@ru.mvista.com> <493B0A8E.7000506@garzik.org>	 <493B0DF2.4090901@ru.mvista.com> <493B0F36.6030509@garzik.org>	 <86802c440812061936v4629857ehbd2705e389e4378b@mail.gmail.com>	 <493B4E52.6080905@garzik.org> <86802c440812062107h37f0d9f1w1304c4f0ab6856ec@mail.gmail.com>
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To: Yinghai Lu <yinghai@kernel.org>
Cc: Jeff Garzik <jeff@garzik.org>, Alan Cox <alan@lxorguk.ukuu.org.uk>, Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>, =?ISO-8859-1?Q?Dan_No=E9?= <dpn@isomerica.net>, James Bottomley <James.Bottomley@hansenpartnership.com>, Christoph Hellwig <hch@infradead.org>, FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>, linux-ide@vger.kernel.org, linux-scsi@vger.kernel.org, osst@riede.org

Hello.

Yinghai Lu wrote:

>>> anyone one is building block layer for USB disk? will get /dev/uda?
>>>       
>> That already exists -- drivers/block/ub   :)
>>     
>
> this one ?
>
> config BLK_DEV_UB
>         tristate "Low Performance USB Block driver"
>         depends on USB
>         help
>           This driver supports certain USB attached storage devices
>           such as flash keys.
>
>           If you enable this driver, it is recommended to avoid conflicts
>           with usb-storage by enabling USB_LIBUSUAL.
>
>           If unsure, say N.
>
> I was thinking it should be more faster with less one layer.
>   

   I'm not exactly happy with those "one-less-layer" solutions for the 
devices that are SCSI in nature (like ide-{cd|tape|floppy} or this one) 
but at least they have a smaller memory footprint than a multi-layer 
SCSI-based implementation. I hope the "low performace" here means that 
the devices are slow, not the driver though... :-)

> YH
>   

MBR, Sergei