Message-ID: <44EDD29B.1000207@s5r6.in-berlin.de>
Date: Thu, 24 Aug 2006 18:23:55 +0200
From: Stefan Richter <stefanr@s5r6.in-berlin.de>
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To: David Howells <dhowells@redhat.com>
CC: Jens Axboe <axboe@suse.de>, linux-fsdevel@vger.kernel.org,
       linux-kernel@vger.kernel.org
Subject: Re: [PATCH] BLOCK: Make it possible to disable the block layer
References: <32640.1156424442@warthog.cambridge.redhat.com>
In-Reply-To: <32640.1156424442@warthog.cambridge.redhat.com>
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David Howells wrote:
...
>  (*) Adds dependencies on CONFIG_BLOCK to any configuration item that controls
>      an item that uses the block layer.  This includes:
...
>      (*) The SCSI layer.  As far as I can tell, even SCSI chardevs use the
>      	 block layer to do scheduling.
> 
>      (*) Various block-based device drivers, such as IDE, the old CDROM
>      	 drivers and USB storage.
...

Side note w/o consequence for your patch: usb-storage is not a 
block-based device driver. It is a SCSI low-level provider which happens 
to need symbols from the block layer to adjust parameters of the SCSI 
request queue since there are no fitting abstractions supplied by the 
SCSI mid-level.
-- 
Stefan Richter
-=====-=-==- =--- ==---
http://arcgraph.de/sr/
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