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SubjectRe: [GIT PULL] kdbus for 4.1-rc1
On Tue, Apr 14, 2015 at 06:36:28PM -0700, Andy Lutomirski wrote:
> On Mon, Apr 13, 2015 at 1:22 PM, Al Viro <viro@zeniv.linux.org.uk> wrote:
> > On Mon, Apr 13, 2015 at 09:42:17PM +0200, Greg Kroah-Hartman wrote:
> >> > I remain opposed to this half thought out trash of an ABI for the
> >> > meta-data.
> >>
> >> You don't have to enable the metadata if you don't want to use it, it's
> >> an option :)
> >
> > OK, _that_ argument needs to be stomped out. It had been used before,
> > and it was a deliberate scam. There is no such thing as optional kernel
> > interface, especially when udev/dbus/systemd crowd is nearby. We'd been
> > through that excuse before; remember how devtmpfs was pushed in as "optional"?
> >
> > This is a huge red flag. On the level of "I need your account information
> > to transfer $200M you might have inherited from my deceased client".
> >
> > Just to recap how it went the last time around: Kay kept pushing his piece of
> > code into the tree, claiming that it was optional, that nobody who doesn't
> > like it has to enable it, so what's the problem? OK, in it went. And pretty
> > soon udev (maintained by the same... meticulously honorable person) had
> > stopped working on the kernels that didn't have that enabled.
> >
> > We had been there before. To paraphrase another... meticulously honorable
> > person, "if you didn't want something relied upon, why have you put it into the
> > kernel?" Said person is on the record as having no problem whatsoever with
> > adding dependencies to the bottom of userland stack.
>
> It appears that, if kdbus is merged, upstream udev may end up requiring it:
>
> http://lists.freedesktop.org/archives/systemd-devel/2014-May/019657.html

Why would anyone propose a kernel api if they didn't actually plan to
use it? Look at the first email in this thread, it shows the
people/projects that want to use this. This is a crazy argument to try
to make people, "stop using the feature that the kernel provides you!"

greg k-h


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