linux-kernel - Re: [PATCH 17/17] BLOCK: Make it possible to disable the block layer [try #2]

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Message-ID: <15945.1156854198@warthog.cambridge.redhat.com>
Date:	Tue, 29 Aug 2006 13:23:18 +0100
From:	David Howells <dhowells@...hat.com>
To:	Christoph Hellwig <hch@...radead.org>
Cc:	David Howells <dhowells@...hat.com>, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 17/17] BLOCK: Make it possible to disable the block layer [try #2] 

Christoph Hellwig <hch@...radead.org> wrote:

> Same as above.  USB_STORAGE already selects scsi so it shouldn't need
> to depend on block.

Ah, you've got it the wrong way round.

Because USB_STORAGE _selects_ SCSI rather than depending on it, even if SCSI
is disabled, USB_STORAGE can be enabled, and that turns on CONFIG_SCSI, even
if not all of its dependencies are available.

Run "make allyesconfig" and then try to turn off CONFIG_SCSI without this...

David
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