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

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Message-ID: <24930f544e7e98a23a17c9adcacb9397b1b8cae7.1449742561.git.vdavydov@virtuozzo.com>
Date:	Thu, 10 Dec 2015 14:39:20 +0300
From:	Vladimir Davydov <vdavydov@...tuozzo.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	Johannes Weiner <hannes@...xchg.org>,
	Michal Hocko <mhocko@...nel.org>, <linux-mm@...ck.org>,
	<linux-kernel@...r.kernel.org>
Subject: [PATCH 7/7] Documentation: cgroup: add memory.swap.{current,max} description

Signed-off-by: Vladimir Davydov <vdavydov@...tuozzo.com>
---
 Documentation/cgroup.txt | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/Documentation/cgroup.txt b/Documentation/cgroup.txt
index 31d1f7bf12a1..21c6c013c339 100644
--- a/Documentation/cgroup.txt
+++ b/Documentation/cgroup.txt
@@ -819,6 +819,22 @@ PAGE_SIZE multiple when read back.
 		the cgroup.  This may not exactly match the number of
 		processes killed but should generally be close.
 
+  memory.swap.current
+
+	A read-only single value file which exists on non-root
+	cgroups.
+
+	The total amount of swap currently being used by the cgroup
+	and its descendants.
+
+  memory.swap.max
+
+	A read-write single value file which exists on non-root
+	cgroups.  The default is "max".
+
+	Swap usage hard limit.  If a cgroup's swap usage reaches this
+	limit, anonymous meomry of the cgroup will not be swapped out.
+
 
 5-2-2. General Usage
 
-- 
2.1.4

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