[RFC PATCH v1.2 01/12] mm/damon/core: use damon_nr_samples_per_aggr() for max merge threshold

kdamond_merge_regions() open-codes max region merge threshold
calculation.  What it does is fundamentally the same as
damon_nr_samples_per_aggr() but missing a few corner cases.  The
unhandled corner cases should be rare and make only a negligible level
of monitoring results degradation.  But having the inconsistency could
increase future maintenance burden.  Use the dedicated function.

Signed-off-by: SJ Park <[email protected]>
---
 mm/damon/core.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/mm/damon/core.c b/mm/damon/core.c
index f7c9b94b6436b..4169268d94416 100644
--- a/mm/damon/core.c
+++ b/mm/damon/core.c
@@ -3470,8 +3470,7 @@ static void kdamond_merge_regions(struct damon_ctx *c, unsigned int threshold,
 	unsigned int max_thres;
 	bool count_age = true;
 
-	max_thres = c->attrs.aggr_interval /
-		(c->attrs.sample_interval ?  c->attrs.sample_interval : 1);
+	max_thres = damon_nr_samples_per_aggr(&c->attrs);
 	while (true) {
 		nr_regions = 0;
 		damon_for_each_target(t, c) {
-- 
2.47.3