[PATCH V2 6/6] memcg: Document cgroup dirty/writeback memory statistics

[Sha Zhengju]

From: Sha Zhengju <handai.szj@xxxxxxxxxx>

Signed-off-by: Sha Zhengju <handai.szj@xxxxxxxxxx>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Ackedy-by: Michal Hocko <mhocko@xxxxxxx>
Acked-by: Fengguang Wu <fengguang.wu@xxxxxxxxx>
---
 Documentation/cgroups/memory.txt |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/Documentation/cgroups/memory.txt b/Documentation/cgroups/memory.txt
index dd88540..f4b5778 100644
--- a/Documentation/cgroups/memory.txt
+++ b/Documentation/cgroups/memory.txt
@@ -420,6 +420,8 @@ 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
+dirty		- # of bytes of file cache that are not in sync with the disk copy.
+writeback	- # of bytes of file/anon cache that are queued for syncing to disk.
 inactive_anon	- # of bytes of anonymous memory and swap cache memory on
 		LRU list.
 active_anon	- # of bytes of anonymous and swap cache memory on active
-- 
1.7.1

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