[RFC PATCH v3 28/28] Docs/admin-guide/mm/damon/usage: update for memcg damon filter

[SeongJae Park <sj@kernel.org>]

Update DAMON usage document for the newly added belonging memory cgroup
attribute monitoring feature.

Signed-off-by: SeongJae Park <sj@kernel.org>
---
 Documentation/admin-guide/mm/damon/usage.rst | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/Documentation/admin-guide/mm/damon/usage.rst b/Documentation/admin-guide/mm/damon/usage.rst
index 7b6074a1666f3..b4584c0e4cd72 100644
--- a/Documentation/admin-guide/mm/damon/usage.rst
+++ b/Documentation/admin-guide/mm/damon/usage.rst
@@ -73,7 +73,7 @@ comma (",").
     │ │ │ │ │ │ nr_regions/min,max
     │ │ │ │ │ │ :ref:`probes <damon_usage_sysfs_probes>`/nr_probes
     │ │ │ │ │ │ │ 0/filters/nr_filters
-    │ │ │ │ │ │ │ │ 0/type,matching,allow
+    │ │ │ │ │ │ │ │ 0/type,matching,allow,path
     │ │ │ │ │ │ │ │ ...
     │ │ │ │ │ │ │ ...
     │ │ │ │ │ :ref:`targets <sysfs_targets>`/nr_targets
@@ -283,7 +283,9 @@ the data attribute for the probe.
 In the beginning, ``filters`` directory has only one file, ``nr_filters``.
 Writing a number (``N``) to the file creates the number of child directories
 named ``0`` to ``N-1``.  Each directory represents each filter and works in a
-way similar to that for :ref:`DAMOS filter <sysfs_filters>`.
+way similar to that for :ref:`DAMOS filter <sysfs_filters>`.  When the filter
+``type`` is ``memcg``, ``path`` file works the role of ``memcg_path`` for
+:ref:`DAMOS filter <sysfs_filters>`.
 
 .. _sysfs_targets:
 
-- 
2.47.3