damon_insert_region() is being used by only DAMON core, but exposed to
DAMON API callers.  Exposing something that is not really being used by
others will only increase the maintenance cost.  Hide it.

Signed-off-by: SeongJae Park <sj@kernel.org>
---
 include/linux/damon.h | 11 -----------
 mm/damon/core.c       | 11 +++++++++++
 2 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/include/linux/damon.h b/include/linux/damon.h
index 6ba80dff56946..05682839e17ee 100644
--- a/include/linux/damon.h
+++ b/include/linux/damon.h
@@ -1013,17 +1013,6 @@ void damon_add_probe(struct damon_ctx *ctx, struct damon_probe *probe);
 
 struct damon_region *damon_new_region(unsigned long start, unsigned long end);
 
-/*
- * Add a region between two other regions
- */
-static inline void damon_insert_region(struct damon_region *r,
-		struct damon_region *prev, struct damon_region *next,
-		struct damon_target *t)
-{
-	__list_add(&r->list, &prev->list, &next->list);
-	t->nr_regions++;
-}
-
 void damon_destroy_region(struct damon_region *r, struct damon_target *t);
 int damon_set_regions(struct damon_target *t, struct damon_addr_range *ranges,
 		unsigned int nr_ranges, unsigned long min_region_sz);
diff --git a/mm/damon/core.c b/mm/damon/core.c
index 7d1de6ff54eba..53b4bdd27b39d 100644
--- a/mm/damon/core.c
+++ b/mm/damon/core.c
@@ -256,6 +256,17 @@ static void damon_add_region(struct damon_region *r, struct damon_target *t)
 	t->nr_regions++;
 }
 
+/*
+ * Add a region between two other regions
+ */
+static inline void damon_insert_region(struct damon_region *r,
+		struct damon_region *prev, struct damon_region *next,
+		struct damon_target *t)
+{
+	__list_add(&r->list, &prev->list, &next->list);
+	t->nr_regions++;
+}
+
 #ifdef CONFIG_DAMON_DEBUG_SANITY
 static void damon_verify_del_region(struct damon_target *t)
 {
-- 
2.47.3