Hi Christoph, Greg, > -----Original Message----- > From: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> > Sent: Tuesday, August 13, 2019 11:10 PM > To: Christoph Hellwig <hch@xxxxxxxxxxxxx>; Parav Pandit > <parav@xxxxxxxxxxxx> > Cc: Kirti Wankhede <kwankhede@xxxxxxxxxx>; Alex Williamson > <alex.williamson@xxxxxxxxxx>; kvm@xxxxxxxxxxxxxxx; linux- > kernel@xxxxxxxxxxxxxxx; cohuck@xxxxxxxxxx; cjia@xxxxxxxxxx > Subject: Re: [PATCH v2 0/2] Simplify mtty driver and mdev core > > On Tue, Aug 13, 2019 at 09:37:21AM -0700, Christoph Hellwig wrote: > > On Tue, Aug 13, 2019 at 02:40:02PM +0000, Parav Pandit wrote: > > > We need to ask Greg or Linus on the kernel policy on whether an API should > exist without in-kernel driver. > > I "love" it when people try to ask a question of me and they don't actually cc: > me. That means they really do not want the answer (or they already know it...) > Thanks Christoph for adding me here. > I pretty much knew your answer and I was just hinting Kirti that if you ask Greg you would get the same answer. So we better cleanup without reaching out to you. :-) > The policy is that the api should not exist at all, everyone knows this, why is this > even a question? > Yes, I am aware of this. Few subsystems in which I worked, it has followed this policy cautiously. But when I heard different policy for mdev, I asked others wisdom. > > > We don't add such API in netdev, rdma and possibly other subsystem. > > > Where can we find this mdev driver in-tree? > > > > The clear policy is that we don't keep such symbols around. Been > > there done that only recently again. > > Agreed. If anyone knows of anything else that isn't being used, we will be glad > to free up the space by cleaning it up. > Ok. so this small patchset makes sense. Thanks for the ack and direction Christoph, Greg.