Re: [patch 00/13] devtmpfs patches

[Arjan van de Ven]

On Mon, 11 May 2009 16:14:28 +0200
Kay Sievers <kay.sievers@xxxxxxxx> wrote:

> On Mon, May 11, 2009 at 15:10, Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>
> wrote:
> >> And I did, and it's obvious that creating a single file along with
> >> the ~10 we already create in /sys, instead of running through /sys
> >> or /proc later and reconstruct what we missed, is always, and in
> >> every case faster and simpler. It gets rid of a bunch of things we
> >> need to
> >
> > Arjan's numbers for sysfs are 0.06 seconds if I remember the mail
> > correctly. That doesn't account for any meaningful speedup.
> 
> Sure it does. It is great, and it started a huge effort for many
> people to think about the current way to do it. It is very welcome and
> it counts a lot, and there is no doubt, that most of the gains we get
> today are due to Arjans work in that area.
> 
> But he does not use an initramfs, and distros insist to do that. And
> that basically means you need to prepare /dev two times, and also prep

eh why?

this is the part I'm missing.
Make /dev in the initramfs, then bind-mount-move it to its final
location later. 

you ever only need to fill your tmpfs /dev once. initramfs or not.
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