[RFC PATCH 16/18] Docs/mm/damon/design: document per-region sz_filter_passed stat

[SeongJae Park <sj@kernel.org>]

Update 'Regions Walking' sectioin of design document for the newly added
per-region operations set handling DAMOS filters-passed bytes.

Signed-off-by: SeongJae Park <sj@kernel.org>
---
 Documentation/mm/damon/design.rst | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Documentation/mm/damon/design.rst b/Documentation/mm/damon/design.rst
index 0620675a1e8d..ed3072dc8686 100644
--- a/Documentation/mm/damon/design.rst
+++ b/Documentation/mm/damon/design.rst
@@ -586,7 +586,8 @@ Regions Walking
 
 DAMOS feature allowing users access each region that a DAMOS action has just
 applied.  Using this feature, DAMON :ref:`API <damon_design_api>` allows users
-access full properties of the regions including the access monitoring results.
+access full properties of the regions including the access monitoring results
+and amount of the region's internal memory that passed the DAMOS filters.
 :ref:`DAMON sysfs interface <sysfs_interface>` also allows users read the data
 via special :ref:`files <sysfs_schemes_tried_regions>`.
 
-- 
2.39.5