linux-kernel - Re: [PATCH v2 7/7] Documentation: cgroup: add memory.swap.{current,max} description

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Message-ID: <20151218153924.GT28521@esperanza>
Date:	Fri, 18 Dec 2015 18:39:24 +0300
From:	Vladimir Davydov <vdavydov@...tuozzo.com>
To:	Kamezawa Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	Johannes Weiner <hannes@...xchg.org>,
	Michal Hocko <mhocko@...nel.org>, <linux-mm@...ck.org>,
	<cgroups@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 7/7] Documentation: cgroup: add
 memory.swap.{current,max} description

On Fri, Dec 18, 2015 at 11:51:23AM +0900, Kamezawa Hiroyuki wrote:
...
> Could you give here a hint how to calculate amount of swapcache,
> counted both in memory.current and swap.current ?

Currently it's impossible, but once memory.stat has settled in the
unified hierarchy, it might be worth adding a stat counter for such
pages (equivalent to SwapCached in the global /proc/meminfo).

Thanks,
Vladimir
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