Re: [PATCH] [repost] Drivers: hv: vmbus: Offload the handling of channels to two workqueues

["gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>]

On Fri, Nov 30, 2018 at 06:09:54PM +0000, Dexuan Cui wrote:
> > From: KY Srinivasan <kys@microsoft.com>
> > Sent: Friday, November 30, 2018 9:31 AM
> > > From: Dexuan Cui <decui@microsoft.com>
> > > Sent: Thursday, November 29, 2018 12:17 AM
> > > To: gregkh@linuxfoundation.org
> > > Cc: KY Srinivasan <kys@microsoft.com>; Haiyang Zhang
> > > <haiyangz@microsoft.com>; Stephen Hemminger
> > > <sthemmin@microsoft.com>; linux-kernel@vger.kernel.org;
> > > devel@linuxdriverproject.org; apw@canonical.com; vkuznets
> > > <vkuznets@redhat.com>; olaf@aepfle.de; jasowang@redhat.com; Michael
> > > Kelley <mikelley@microsoft.com>
> > > Subject: RE: [PATCH] [repost] Drivers: hv: vmbus: Offload the handling of
> > > channels to two workqueues
> > >
> > > > From: gregkh@linuxfoundation.org <gregkh@linuxfoundation.org>
> > > > Sent: Wednesday, November 28, 2018 11:45 PM
> > > > >
> > > > > There is no change in this repost. I just rebased this patch to today's
> > > > > char-misc's char-misc-next branch. Previously KY posted the patch with
> > > his
> > > > > Signed-off-by (which is kept in this repost), but there was a conflict issue.
> > > > >
> > > > > Note: the patch can't be cleanly applied to char-misc's char-misc-linus
> > > branch
> > > > --
> > > > > to do that, we need to cherry-pick the supporting patch first:
> > > > > 4d3c5c69191f ("Drivers: hv: vmbus: Remove the useless API
> > > > vmbus_get_outgoing_channel()")
> > > >
> > > > That is not going to work for the obvious reason that this dependant
> > > > patch is not going to be merged into 4.20-final.
> > >
> > > It looks the dependent patch (4d3c5c69191f) is going to miss the v4.20
> > > release.
> > > This is not a big issue, as the dependent patch isn't really important.
> > >
> > > > So, what do you expect us to do here?  The only way this can be accepted
> > > > is to have it go into my -next branch, which means it will show up in
> > > > 4.21-rc1, is that ok?
> > >
> > > Is there any chance for this patch ("Drivers: hv: vmbus: Offload the handling
> > > ...") to
> > > go into v4.20?
> > >
> > > If yes, I can quickly do a rebase to char-misc's char-misc-linus branch,
> > > because actually the conflict can be very easily fixed. And I can help to fix any
> > > conflict when the dependent patch is backported to v4.20.1.
> > 
> > This patch fixes an important bug while the patch this depends on is not
> > critical.
> > I suggest we revert the patch that this patch depends on
> > and we can submit a new version of this patch that can go in now - into 4.20
> > release.
> > 
> > K. Y
> 
> I agree.
> 
> Hi Greg,
> Please let us know what we can do to try to push this important fix into v4.20.
> 
> Actually it's straightforward, though it looks big. And, we ave done a full testing
> with the patch.

Ok, you all need to figure this out on your own, sorry.  Please give me
a patch that I can actually apply to the tree if you need it merged into
4.20-final.  This shouldn't be tough, you all have been doing this long
enough by now...

I have no bandwidth to do this myself for you,

greg k-h