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SubjectRe: [PATCH] driver-core: devtmpfs - driver core maintained /dev tmpfs
On Thu, 30 Apr 2009 15:23:42 +0200
Kay Sievers <> wrote:

> From: Kay Sievers <>
> Subject: driver-core: devtmpfs - driver core maintained /dev tmpfs
> Devtmpfs lets the kernel create a tmpfs very early at kernel
> initialization, before any driver core device is registered. Every
> device with a major/minor will have a device node created in this
> tmpfs instance. After the rootfs is mounted by the kernel, the
> populated tmpfs is mounted at /dev. In initramfs, it can be moved
> to the manually mounted root filesystem before /sbin/init is
> executed.

so just to state the obvious: this code is not needed to boot fast.
It is mostly a workaround for having a bad initrd; if you don't use an
initrd, or if you use an initrd that's made with the right device nodes
in it already, you really just don't need this.

I would much rather that you just fix your initrd... than to put this
sort of thing into the kernel....

Arjan van de Ven Intel Open Source Technology Centre
For development, discussion and tips for power savings,

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