[PATCH 7/7] Docs/admin-guide/mm/damon/usage: note DAMON debugfs interface deprecation plan

[SeongJae Park <sj@kernel.org>]

Commit b18402726bd1 ("Docs/admin-guide/mm/damon/usage: document DAMON
sysfs interface") announced the DAMON debugfs interface deprecation
plan, but it is not so aggressively announced.  As the deprecation time
is coming, this commit makes the announce more easy to be found by
adding the note at the beginning of the DAMON debugfs interface usage
document.

Signed-off-by: SeongJae Park <sj@kernel.org>
---
 Documentation/admin-guide/mm/damon/usage.rst | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/admin-guide/mm/damon/usage.rst b/Documentation/admin-guide/mm/damon/usage.rst
index d52f572a9029..c050b882ddc1 100644
--- a/Documentation/admin-guide/mm/damon/usage.rst
+++ b/Documentation/admin-guide/mm/damon/usage.rst
@@ -393,6 +393,11 @@ the files as above.  Above is only for an example.
 debugfs Interface
 =================
 
+.. note::
+
+  DAMON debugfs interface will be removed after next LTS kernel is released, so
+  users should move to the :ref:`sysfs interface <sysfs_interface>`.
+
 DAMON exports eight files, ``attrs``, ``target_ids``, ``init_regions``,
 ``schemes``, ``monitor_on``, ``kdamond_pid``, ``mk_contexts`` and
 ``rm_contexts`` under its debugfs directory, ``<debugfs>/damon/``.
-- 
2.25.1