Re: [PATCH 19/62] Driver-Core: devtmpfs - remove EXPERIMENTAL and enable it by default

From: Kay Sievers
Date: Wed Mar 03 2010 - 17:03:49 EST

On Wed, Mar 3, 2010 at 10:21, Eric W. Biederman <ebiederm@xxxxxxxxxxxx> wrote:
> Kay Sievers <kay.sievers@xxxxxxxx> writes:
>> For the "must have", we will not be able to bootup the upcoming Ubuntu
>> and openSUSE development distros without it, not sure about Fedora,
>> the support is there, but it might still work without it. Some smaller
>> distros also already depend on it.
> Is this a case of the initial ramdisks won't work, or have you removed
> support from udev to create device nodes?

Udev has not changed, it still works without any kernel-created nodes,
as it always did.

It's the distro-specific system coldplug/bootstrap logic that got
simplified with the kernel device-node support. There is more pending,
which will take the advantage of not needing to synchronize some
steps, like it was needed the former asynchronous device-node-creation
behavior. It affects initramfs and kernel-mounted rootfs setups, both
now expect devtmpfs to be available.

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