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Date: Thu, 26 Jan 2017 11:10:07 +0100 From: "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org> To: Dexuan Cui <decui@...rosoft.com> Cc: Stephen Hemminger <stephen@...workplumber.org>, "driverdev-devel@...uxdriverproject.org" <driverdev-devel@...uxdriverproject.org>, KY Srinivasan <kys@...rosoft.com>, Haiyang Zhang <haiyangz@...rosoft.com>, Stephen Hemminger <sthemmin@...rosoft.com>, "olaf@...fle.de" <olaf@...fle.de>, Rolf Neugebauer <rolf.neugebauer@...ker.com>, "jasowang@...hat.com" <jasowang@...hat.com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "apw@...onical.com" <apw@...onical.com> Subject: Re: [PATCH] Drivers: hv: vmbus: finally fix hv_need_to_signal_on_read() On Thu, Jan 26, 2017 at 09:31:32AM +0000, Dexuan Cui wrote: > > From: gregkh@...uxfoundation.org [mailto:gregkh@...uxfoundation.org] > > > > From: gregkh@...uxfoundation.org [mailto:gregkh@...uxfoundation.org] > > > > > > > It's interesting v4.4.44 is not impacted, but actually it needs both the 2 > > > > patches: > > > > > > > i.e. this patch, and the previous one: > > > > > > > Commit a389fcfd2cb5 ("Drivers: hv: vmbus: Fix signaling logic in > > > > > > hv_need_to_signal_on_read()") > > > > > > > > > > > > That patch does not apply to the 4.4-stable tree, which is why it was > > > > > > not included there. If you feel it should be included, please provide a > > > > > > backport and send it to the stable@...r.kernel.org mailing list. > > > > > > > > > > > > greg k-h > > > > > > > > > > Thanks! I'll do the backport after this patch goes in the mainline. > > > > > > > > Why wait? > > > > > > I thought a patch must first appear in Linus's tree, before it can be > > > back-ported to the stable tree? > > > > Commit a389fcfd2cb5 _IS_ in Linus's tree, it was released in the 4.7-rc1 > > kernel, which happened in May of 2016. > > > > greg k-h > > Sorry, it looks I didn't make it clear. :-) > > v4.4.44 needs 2 patches, i.e. a389fcfd2cb5, and this patch (which is not in > Linus's tree yet). Only backporting the first patch immediately is not enough > and is also improper IMO, because the first patch introduces a new issue, > which is being resolved by this patch. So my understanding is that I should > backport the 2 patches together. Ok, that makes a bit more sense, thanks. I'll wait for your "real" patch to hit Linus's tree then. greg k-h
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