DAMON core layer does target cleanup on its own.  Remove duplicated and
unnecessarily selective cleanup attempts in DAMON sysfs interface.

Signed-off-by: SeongJae Park <sj@kernel.org>
---
 mm/damon/sysfs.c | 12 ------------
 1 file changed, 12 deletions(-)

diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c
index b0f7c60d655a..cce2c8a296e2 100644
--- a/mm/damon/sysfs.c
+++ b/mm/damon/sysfs.c
@@ -1361,17 +1361,6 @@ static int damon_sysfs_add_targets(struct damon_ctx *ctx,
 	return 0;
 }
 
-static void damon_sysfs_before_terminate(struct damon_ctx *ctx)
-{
-	struct damon_target *t, *next;
-
-	if (!damon_target_has_pid(ctx))
-		return;
-
-	damon_for_each_target_safe(t, next, ctx)
-		damon_destroy_target(t, ctx);
-}
-
 /*
  * damon_sysfs_upd_schemes_stats() - Update schemes stats sysfs files.
  * @data:	The kobject wrapper that associated to the kdamond thread.
@@ -1516,7 +1505,6 @@ static struct damon_ctx *damon_sysfs_build_ctx(
 		return ERR_PTR(err);
 	}
 
-	ctx->callback.before_terminate = damon_sysfs_before_terminate;
 	return ctx;
 }
 
-- 
2.39.5