From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf1-f199.google.com (mail-pf1-f199.google.com [209.85.210.199]) by kanga.kvack.org (Postfix) with ESMTP id B38AD8E00E5 for ; Wed, 12 Dec 2018 08:59:44 -0500 (EST) Received: by mail-pf1-f199.google.com with SMTP id 74so15374334pfk.12 for ; Wed, 12 Dec 2018 05:59:44 -0800 (PST) Received: from mail-sor-f41.google.com (mail-sor-f41.google.com. [209.85.220.41]) by mx.google.com with SMTPS id b16sor27129829pge.50.2018.12.12.05.59.43 for (Google Transport Security); Wed, 12 Dec 2018 05:59:43 -0800 (PST) From: Sergey Senozhatsky Date: Wed, 12 Dec 2018 22:59:39 +0900 Subject: Re: 4.14 backport request for dbdda842fe96f: "printk: Add console owner and waiter logic to load balance console writes" Message-ID: <20181212135939.GA10170@tigerII.localdomain> References: <20181022100952.GA1147@jagdpanzerIV> <20181109064740.GE599@jagdpanzerIV> <20181212052126.GF431@jagdpanzerIV> <20181212062841.GI431@jagdpanzerIV> <20181212064841.GB2746@sasha-vm> <20181212081034.GA32687@jagdpanzerIV> <20181212133603.yyu2zvw7g454zdqd@pathway.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20181212133603.yyu2zvw7g454zdqd@pathway.suse.cz> Sender: owner-linux-mm@kvack.org List-ID: To: Petr Mladek , Sasha Levin , Daniel Wang Cc: Sergey Senozhatsky , Steven Rostedt , stable@vger.kernel.org, Alexander.Levin@microsoft.com, Andrew Morton , byungchul.park@lge.com, dave.hansen@intel.com, hannes@cmpxchg.org, jack@suse.cz, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Mathieu Desnoyers , Mel Gorman , mhocko@kernel.org, pavel@ucw.cz, penguin-kernel@i-love.sakura.ne.jp, Peter Zijlstra , tj@kernel.org, Linus Torvalds , vbabka@suse.cz, Cong Wang , Peter Feiner On (12/12/18 14:36), Petr Mladek wrote: > > OK, really didn't know that! I wasn't Cc-ed on that AUTOSEL email, > > and I wasn't Cc-ed on this whole discussion and found it purely > > accidentally while browsing linux-mm list. > > I am sorry that I did not CC you. There were so many people in CC. > I expected that all people mentioned in the related commit message > were included by default. No worries! I'm not blaming anyone. > > So if you are willing to backport this set to -stable, then I wouldn't > > mind, probably would be more correct if we don't advertise this as a > > "panic() deadlock fix" > > This should not be a problem. I guess that stable does not modify > the original commit messages unless there is a change. Agreed. > > In the meantime, I can add my Acked-by to this backport if it helps. > > I am fine with back-porting the patches now. They have got much more > testing in the meantime and nobody reported any regression. They > seems to help in more situations than we expected. Finally, there is > someone requesting the backport who spent non-trivial time > on tracking the problem and testing. Great! Sasha, here is Acked-by: Sergey Senozhatsky from me. And expect another backport request in 1 or 2 weeks - the patch which eliminates the existing "panic CPU != uart_port lock owner CPU" limitation. -ss