From: Sha Zhengju <handai.szj@taobao.com>
Date: Thu, 12 Sep 2013 22:13:54 +0000 (-0700)
Subject: memcg: document cgroup dirty/writeback memory statistics
X-Git-Tag: firefly_0821_release~176^2~5312^2~10
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=9cb2dc1c950cf0624202c1ea2705705e1e51c278;p=firefly-linux-kernel-4.4.55.git

memcg: document cgroup dirty/writeback memory statistics

Signed-off-by: Sha Zhengju <handai.szj@taobao.com>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Cc: Greg Thelen <gthelen@google.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/Documentation/cgroups/memory.txt b/Documentation/cgroups/memory.txt
index 2a3330696372..8af4ad121828 100644
--- a/Documentation/cgroups/memory.txt
+++ b/Documentation/cgroups/memory.txt
@@ -490,6 +490,8 @@ pgpgin		- # of charging events to the memory cgroup. The charging
 pgpgout		- # of uncharging events to the memory cgroup. The uncharging
 		event happens each time a page is unaccounted from the cgroup.
 swap		- # of bytes of swap usage
+writeback	- # of bytes of file/anon cache that are queued for syncing to
+		disk.
 inactive_anon	- # of bytes of anonymous and swap cache memory on inactive
 		LRU list.
 active_anon	- # of bytes of anonymous and swap cache memory on active