From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qk0-f197.google.com (mail-qk0-f197.google.com [209.85.220.197]) by kanga.kvack.org (Postfix) with ESMTP id 68BB66B0033 for ; Tue, 19 Sep 2017 14:57:50 -0400 (EDT) Received: by mail-qk0-f197.google.com with SMTP id g128so690878qke.5 for ; Tue, 19 Sep 2017 11:57:50 -0700 (PDT) Received: from mail-sor-f41.google.com (mail-sor-f41.google.com. [209.85.220.41]) by mx.google.com with SMTPS id a9sor9050qtg.52.2017.09.19.11.57.48 for (Google Transport Security); Tue, 19 Sep 2017 11:57:49 -0700 (PDT) Date: Tue, 19 Sep 2017 11:57:45 -0700 From: Tejun Heo Subject: Re: [PATCH] mm, memory_hotplug: do not back off draining pcp free pages from kworker context Message-ID: <20170919185745.GB828415@devbig577.frc2.facebook.com> References: <20170828093341.26341-1-mhocko@kernel.org> <20170828153359.f9b252f99647eebd339a3a89@linux-foundation.org> <6e138348-aa28-8660-d902-96efafe1dcb2@I-love.SAKURA.ne.jp> <20170829112823.GA12413@dhcp22.suse.cz> <20170831053342.fo7x4hnhicxikme4@dhcp22.suse.cz> <20170919033821.GR378890@devbig577.frc2.facebook.com> <20170919094521.2vqcnqrx3q2h2axb@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20170919094521.2vqcnqrx3q2h2axb@dhcp22.suse.cz> Sender: owner-linux-mm@kvack.org List-ID: To: Michal Hocko Cc: Tetsuo Handa , Andrew Morton , Mel Gorman , linux-mm@kvack.org, LKML Hello, On Tue, Sep 19, 2017 at 11:45:21AM +0200, Michal Hocko wrote: > > So, this shouldn't be an issue. This may get affected by direct > > reclaim frenzy but it's only a small piece of the whole symptom and we > > gotta fix that at the source. > > OK, so there shouldn't be any issue with the patch, right? idk, it'll make the code path more susceptible to direct reclaim starvations, so it's difficult to claim that there won't be *any* problems; however, given the extent of the starvation problem, this likely won't add any noticeable issues. Thanks. -- tejun -- 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