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-rw-r--r--Documentation/cgroups/memory.txt2
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/cgroups/memory.txt b/Documentation/cgroups/memory.txt
index 2a333069637..8af4ad12182 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