Re: [PATCH] Remove broken by design and by implementation devtmpfs maintenance disaster
From: Eric W. Biederman
Date: Fri Sep 18 2009 - 09:54:50 EST
> I don't understand. Udev applies the final policy including
> permissions/ownership, just as before. There is no differrence. It's
> just that you can bring up a box without complex userspace to
> bootstrap /dev. And that's a big win on its own.
udev is too complex to use? That sounds like a userspace bug.
This I guess is where I am baffled. The argument for devtmpfs
always seem to boil down to: udev sucks let's write some kernel
code instead.
I have been trying to ask for a long time why we can't just fix
udev to not suck.
> And things like
> "modprobe loop; losetup /dev/loop0" will just work, which it doesn't
> with todays async udev. Again, please make yourself familiar how
> things work, and what the problems are.
I guess I don't understand why
modprobe loop; losetup /dev/loop0 is an interesting case.
When you can just as easily do:
modprobe loop; udevadm settle; losetup /dev/loop0.
Eric
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