From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f49.google.com (mail-pa0-f49.google.com [209.85.220.49]) by kanga.kvack.org (Postfix) with ESMTP id 8B96D82F64 for ; Fri, 30 Oct 2015 22:43:15 -0400 (EDT) Received: by pasz6 with SMTP id z6so90296655pas.2 for ; Fri, 30 Oct 2015 19:43:15 -0700 (PDT) Received: from www262.sakura.ne.jp (www262.sakura.ne.jp. [202.181.97.72]) by mx.google.com with ESMTPS id sh4si15330440pac.159.2015.10.30.19.43.14 for (version=TLS1 cipher=AES128-SHA bits=128/128); Fri, 30 Oct 2015 19:43:14 -0700 (PDT) Subject: Re: [patch 3/3] vmstat: Create our own workqueue From: Tetsuo Handa References: <201510282057.JHI87536.OMOFFFLJOHQtVS@I-love.SAKURA.ne.jp> <20151029022447.GB27115@mtj.duckdns.org> <20151029030822.GD27115@mtj.duckdns.org> In-Reply-To: Message-Id: <201510311143.BIH87000.tOSVFHOFJMLFOQ@I-love.SAKURA.ne.jp> Date: Sat, 31 Oct 2015 11:43:00 +0900 Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-linux-mm@kvack.org List-ID: To: cl@linux.com Cc: htejun@gmail.com, akpm@linux-foundation.org, mhocko@kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, torvalds@linux-foundation.org, hannes@cmpxchg.org, mgorman@suse.de Christoph Lameter wrote: > On Thu, 29 Oct 2015, Tejun Heo wrote: > > > Wait, this series doesn't include Tetsuo's change. Of course it won't > > fix the deadlock problem. What's necessary is Tetsuo's patch + > > WQ_MEM_RECLAIM. > > This series is only dealing with vmstat changes. Do I get an ack here? > Then, you need to update below description (or drop it) because patch 3/3 alone will not guarantee that the counters are up to date. Christoph Lameter wrote: > Seems that vmstat needs its own workqueue now since the general > workqueue mechanism has been *enhanced* which means that the > vmstat_updates cannot run reliably but are being blocked by > work requests doing memory allocation. Which causes vmstat > to be unable to keep the counters up to date. I am waiting for decision from candidates listed at http://lkml.kernel.org/r/201510251952.CEF04109.OSOtLFHFVFJMQO@I-love.SAKURA.ne.jp . If your series is not for backporting, please choose one from the candidates. Can you accept the original patch at http://lkml.kernel.org/r/201510212126.JIF90648.HOOFJVFQLMStOF@I-love.SAKURA.ne.jp which implements (1) from the candidates? -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org