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Date:   Wed, 12 Dec 2018 01:48:42 -0500
From:   Sasha Levin <sashal@kernel.org>
To:     Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Cc:     Daniel Wang <wonderfly@google.com>, Petr Mladek <pmladek@suse.com>,
        Steven Rostedt <rostedt@goodmis.org>, stable@vger.kernel.org,
        Alexander.Levin@microsoft.com,
        Andrew Morton <akpm@linux-foundation.org>,
        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 <mathieu.desnoyers@efficios.com>,
        Mel Gorman <mgorman@suse.de>, mhocko@kernel.org, pavel@ucw.cz,
        penguin-kernel@i-love.sakura.ne.jp,
        Peter Zijlstra <peterz@infradead.org>, tj@kernel.org,
        Linus Torvalds <torvalds@linux-foundation.org>, vbabka@suse.cz,
        Cong Wang <xiyou.wangcong@gmail.com>,
        Peter Feiner <pfeiner@google.com>
Subject: Re: 4.14 backport request for dbdda842fe96f: "printk: Add console
 owner and waiter logic to load balance console writes"
Message-ID: <20181212064841.GB2746@sasha-vm>
References: <20181004083609.kcziz2ynwi2w7lcm@pathway.suse.cz>
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 <20181109064740.GE599@jagdpanzerIV>
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On Wed, Dec 12, 2018 at 03:28:41PM +0900, Sergey Senozhatsky wrote:
>On (12/11/18 22:08), Daniel Wang wrote:
>>
>> I've been meaning to try it but kept getting distracted by other
>> things. I'll try to find some time for it this week or next. Right now
>> my intent is to get Steven's patch into 4.14 stable as it evidently
>> fixed the particular issue I was seeing, and as Steven said it has
>> been in upstream since 4.16 so it's not like backporting it will raise
>> any red flags. I will start another thread on -stable for it.
>
>OK.
>
>> > I guess we still don't have a really clear understanding of what exactly
>> is going in your system
>>
>> I would also like to get to the bottom of it. Unfortunately I haven't
>> got the expertise in this area nor the time to do it yet. Hence the
>> intent to take a step back and backport Steven's patch to fix the
>> issue that has resurfaced in our production recently.
>
>No problem.
>I just meant that -stable people can be a bit "unconvinced".

The -stable people tried adding this patch back in April, but ended up
getting complaints up the wazoo (https://lkml.org/lkml/2018/4/9/154)
about how this is not -stable material.

So yes, testing/acks welcome :)

--
Thanks,
Sasha