[RFC PATCH v1.2 03/11] mm/damon/sysfs-schemes: kobject_del() scheme 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 scheme directories by adding kobject_del() calls.

Fixes: 7e84b1f8212a ("mm/damon/sysfs: support DAMON-based Operation Schemes")
Cc: <stable@vger.kernel.org> # 5.18.x
Signed-off-by: SeongJae Park <sj@kernel.org>
---
 mm/damon/sysfs-schemes.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/mm/damon/sysfs-schemes.c b/mm/damon/sysfs-schemes.c
index 0134111c3c1ff..13f5fae01800b 100644
--- a/mm/damon/sysfs-schemes.c
+++ b/mm/damon/sysfs-schemes.c
@@ -2683,6 +2683,7 @@ void damon_sysfs_schemes_rm_dirs(struct damon_sysfs_schemes *schemes)
 
 	for (i = 0; i < schemes->nr; i++) {
 		damon_sysfs_scheme_rm_dirs(schemes_arr[i]);
+		kobject_del(&schemes_arr[i]->kobj);
 		kobject_put(&schemes_arr[i]->kobj);
 	}
 	schemes->nr = 0;
@@ -2724,13 +2725,15 @@ static int damon_sysfs_schemes_add_dirs(struct damon_sysfs_schemes *schemes,
 			goto out;
 		err = damon_sysfs_scheme_add_dirs(scheme);
 		if (err)
-			goto out;
+			goto del_out;
 
 		schemes_arr[i] = scheme;
 		schemes->nr++;
 	}
 	return 0;
 
+del_out:
+	kobject_del(&scheme->kobj);
 out:
 	damon_sysfs_schemes_rm_dirs(schemes);
 	kobject_put(&scheme->kobj);
-- 
2.47.3