[RFC PATCH 1/9] mm/damon/sysfs: kobject_del() target, context and kdamond dirs

[SeongJae Park <sj@kernel.org>]

On CONFIG_DEBUG_KOBJECT_RELEASE enabled kernel, lack of kobject_del()
could cause directories creation failures due to the name conflicts.
Fix those issues for target, context and kdamond directories by adding
kobject_del() calls.

Fixes: c951cd3b8901 ("mm/damon: implement a minimal stub for sysfs-based DAMON interface")
Cc: <stable@vger.kernel.org> # 5.18.x
Signed-off-by: SeongJae Park <sj@kernel.org>
---
 mm/damon/sysfs.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c
index 2e95e3bac774d..d93f7919c3ca1 100644
--- a/mm/damon/sysfs.c
+++ b/mm/damon/sysfs.c
@@ -333,6 +333,7 @@ static void damon_sysfs_targets_rm_dirs(struct damon_sysfs_targets *targets)
 
 	for (i = 0; i < targets->nr; i++) {
 		damon_sysfs_target_rm_dirs(targets_arr[i]);
+		kobject_del(&targets_arr[i]->kobj);
 		kobject_put(&targets_arr[i]->kobj);
 	}
 	targets->nr = 0;
@@ -1642,6 +1643,7 @@ static void damon_sysfs_contexts_rm_dirs(struct damon_sysfs_contexts *contexts)
 
 	for (i = 0; i < contexts->nr; i++) {
 		damon_sysfs_context_rm_dirs(contexts_arr[i]);
+		kobject_del(&contexts_arr[i]->kobj);
 		kobject_put(&contexts_arr[i]->kobj);
 	}
 	contexts->nr = 0;
@@ -2501,6 +2503,7 @@ static void damon_sysfs_kdamonds_rm_dirs(struct damon_sysfs_kdamonds *kdamonds)
 
 	for (i = 0; i < kdamonds->nr; i++) {
 		damon_sysfs_kdamond_rm_dirs(kdamonds_arr[i]);
+		kobject_del(&kdamonds_arr[i]->kobj);
 		kobject_put(&kdamonds_arr[i]->kobj);
 	}
 	kdamonds->nr = 0;
-- 
2.47.3