From mboxrd@z Thu Jan  1 00:00:00 1970
From: Vladimir Davydov <vdavydov@parallels.com>
Subject: Re: [RFC v2 0/3] idle memory tracking
Date: Tue, 7 Apr 2015 15:08:45 +0300
Message-ID: <20150407120845.GA10286@esperanza>
References: <cover.1428401673.git.vdavydov@parallels.com>
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To: Andrew Morton <akpm@linux-foundation.org>
Cc: Minchan Kim <minchan@kernel.org>, Johannes Weiner <hannes@cmpxchg.org>, Michal Hocko <mhocko@suse.cz>, Greg Thelen <gthelen@google.com>, Michel Lespinasse <walken@google.com>, David Rientjes <rientjes@google.com>, Pavel Emelyanov <xemul@parallels.com>, Cyrill Gorcunov <gorcunov@openvz.org>, Jonathan Corbet <corbet@lwn.net>, linux-api@vger.kernel.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org
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Forgot to mention:

Originally, the patch for tracking idle memory was proposed back in 2011
by Michel Lespinasse (see http://lwn.net/Articles/459269/). The main
difference between Michel's patch and this one is that Michel
implemented a kernel space daemon for estimating idle memory size per
cgroup while this patch only provides the userspace with the minimal API
for doing the job, leaving the rest up to the userspace. However, they
both share the same idea of Idle/Young page flags to avoid affecting the
reclaimer logic.