Re: config EXT4DEV_FS question

From: Dave Kleikamp
Date: Tue Oct 17 2006 - 08:34:20 EST


On Tue, 2006-10-17 at 01:08 +0200, Jan Engelhardt wrote:
> Hi,
>
>
>
> something I have seen during `make oldconfig`, in fs/Kconfig we find:
>
> config EXT4DEV_FS
> ...
>
> To compile this file system support as a module, choose M here. The
> module will be called ext4dev. Be aware, however, that the
> filesystem of your root partition (the one containing the directory
> /) cannot be compiled as a module, and so this could be dangerous.
>
>
> Why can't this be compiled as a module when / is ext4? There are a lot
> of people out there having no filesystem code included in the kernel at
> all (includes at least SUSE users using the default vendor kernel), but
> instead have them as modules in their initramfss (what's the proper
> plural of initramfs?). What is it that makes ext4 different?

That same paragraph is in the help text of both ext2 and ext3. It is a
bit outdated and should probably be cleaned up in all three.

Shaggy
--
David Kleikamp
IBM Linux Technology Center

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