Update DAMON ABI document for the newly added DAMON sysfs interface
file, max_nr_snapshots.

Signed-off-by: SeongJae Park <sj@kernel.org>
---
 Documentation/ABI/testing/sysfs-kernel-mm-damon | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-damon b/Documentation/ABI/testing/sysfs-kernel-mm-damon
index 8ec469eb4471..4504a0f8b446 100644
--- a/Documentation/ABI/testing/sysfs-kernel-mm-damon
+++ b/Documentation/ABI/testing/sysfs-kernel-mm-damon
@@ -522,6 +522,13 @@ Contact:	SeongJae Park <sj@kernel.org>
 Description:	Reading this file returns the total number of DAMON snapshots
 		that the scheme has tried to be applied.
 
+What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/stats/max_nr_snapshots
+Date:		Nov 2025
+Contact:	SeongJae Park <sj@kernel.org>
+Description:	Writing a number to this file sets the upper limit of
+		nr_snapshots that deactivates the scheme when the limit is
+		reached or exceeded.
+
 What:		/sys/kernel/mm/damon/admin/kdamonds/<K>/contexts/<C>/schemes/<S>/tried_regions/total_bytes
 Date:		Jul 2023
 Contact:	SeongJae Park <sj@kernel.org>
-- 
2.47.3