From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:53964 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752086AbdFLTRn (ORCPT ); Mon, 12 Jun 2017 15:17:43 -0400 Date: Mon, 12 Jun 2017 21:17:34 +0200 From: Greg KH To: "Paul E. McKenney" Cc: pbonzini@redhat.com, linuc.decode@gmail.com, torvalds@linux-foundation.org, stable@vger.kernel.org Subject: Re: FAILED: patch "[PATCH] srcu: Allow use of Classic SRCU from both process and" failed to apply to 4.9-stable tree Message-ID: <20170612191734.GB2114@kroah.com> References: <149726987911656@kroah.com> <20170612163151.GW3721@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20170612163151.GW3721@linux.vnet.ibm.com> Sender: stable-owner@vger.kernel.org List-ID: On Mon, Jun 12, 2017 at 09:31:51AM -0700, Paul E. McKenney wrote: > On Mon, Jun 12, 2017 at 02:17:59PM +0200, gregkh@linuxfoundation.org wrote: > > > > The patch below does not apply to the 4.9-stable tree. > > If someone wants it applied there, or to any other stable or longterm > > tree, then please email the backport, including the original git commit > > id to . > > Indeed, this won't apply cleanly to 4.9 and earlier because of some > changes to the way SRCU works. And if you try to make the obvious > adjustments to make the patch apply, you will break SRCU. Oh good, I was wondering about that, I thought I had backported it properly, but then I figured I really don't know how rcu works in detail, so decided to just punt and reject it :) thanks, greg k-h