linux-kernel - Re: fs/Kconfig question regarding CONFIG

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Message-ID: <20061017193645.GM7854@kernel.dk>
Date:	Tue, 17 Oct 2006 21:36:45 +0200
From:	Jens Axboe <jens.axboe@...cle.com>
To:	Jan Engelhardt <jengelh@...ux01.gwdg.de>
Cc:	Valdis.Kletnieks@...edu,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: fs/Kconfig question regarding CONFIG_BLOCK

On Tue, Oct 17 2006, Jan Engelhardt wrote:
> 
> >> fs/Kconfig has:
> >> 
> >> if BLOCK
> >> menu "DOS/FAT/NT Filesystems"
> >
> >> Why is it wrapped into BLOCK, or, why are all of the other filesystems 
> >> which require a block device?
> >
> >Some filesystems (such as /proc, /sys, and so on - basicaly, the "pseudo" file
> >systems) are able to stand by themselves.  Filesystems that read actual blocks
> >of data off actual media will require the services of the block layer to do
> >that.  So if you've built a tiny embedded kernel that doesn't include the block
> >layer, you can't read those sorts of filesystems....
> 
> Never mind, I see that some filesystems have 'depends on BLOCK' instead 
> of being wrapped into if BLOCK. Not really consistent but whatever.

Feel free to send in patches that make things more consistent.

-- 
Jens Axboe

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