Document the new DAMON_LRU_SORT parameter, filter_young_pages. It can
be used to use page level access re-check for the LRU sorting.
Signed-off-by: SeongJae Park <sj@kernel.org>
---
Documentation/admin-guide/mm/damon/lru_sort.rst | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/Documentation/admin-guide/mm/damon/lru_sort.rst b/Documentation/admin-guide/mm/damon/lru_sort.rst
index 72a943202676..bb222a32aefd 100644
--- a/Documentation/admin-guide/mm/damon/lru_sort.rst
+++ b/Documentation/admin-guide/mm/damon/lru_sort.rst
@@ -79,6 +79,20 @@ of parametrs except ``enabled`` again. Once the re-reading is done, this
parameter is set as ``N``. If invalid parameters are found while the
re-reading, DAMON_LRU_SORT will be disabled.
+filter_young_pages
+------------------
+
+Filter [non-]young pages accordingly for LRU [de]prioritizations.
+
+If this is set, check page level access (youngness) once again before each
+LRU [de]prioritization operation. LRU prioritization operation is skipped
+if the page has not accessed since the last check (not young). LRU
+deprioritization operation is skipped if the page has accessed since the
+last check (young). The feature is enabled or disabled if this parameter is
+set as ``Y`` or ``N``, respectively.
+
+Disabled by default.
+
hot_thres_access_freq
---------------------
--
2.47.3