[PATCH RESEND 1/3] mm/damon/core: clarify next_intervals_tune_sis update path

[SeongJae Park <sj@kernel.org>]

From: niecheng <niecheng1@uniontech.com>

damon_set_attrs() updates next_aggregation_sis and
next_ops_update_sis for online attrs updates, but it does not update
next_intervals_tune_sis there.

This can look like a missing update when reading damon_set_attrs()
alone, while next_intervals_tune_sis is actually updated in
kdamond_fn().

Add a short comment to make this explicit.

Suggested-by: SeongJae Park <sj@kernel.org>
Signed-off-by: niecheng <niecheng1@uniontech.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Signed-off-by: SeongJae Park <sj@kernel.org>
---
Changes from v2
- v2: https://lore.kernel.org/D3B0C1F5BB6ADCE4+20260514163751.3399513-1-niecheng1@uniontech.com
- Collect Reviewed-by: tag.
- Rebase to latest mm-new.
Changes from v1
- v1: https://lore.kernel.org/7946CE4E0773AEF7+20260514074846.3258908-1-niecheng1@uniontech.com
- Keep the behavior and clarify it instead.

 mm/damon/core.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/mm/damon/core.c b/mm/damon/core.c
index 4e223857a0f99..68b3b4bbc8fc9 100644
--- a/mm/damon/core.c
+++ b/mm/damon/core.c
@@ -909,6 +909,9 @@ int damon_set_attrs(struct damon_ctx *ctx, struct damon_attrs *attrs)
 		attrs->aggr_interval / sample_interval;
 	ctx->next_ops_update_sis = ctx->passed_sample_intervals +
 		attrs->ops_update_interval / sample_interval;
+	/*
+	 * next_intervals_tune_sis will be updated inside kdamond_fn().
+	 */
 
 	damon_update_monitoring_results(ctx, attrs, aggregating);
 	ctx->attrs = *attrs;
-- 
2.47.3