[RFC PATCH 2/9] mm/damon/sysfs: kobject_del() region dirs

[SeongJae Park]

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 region directories by adding kobject_del() calls.

Fixes: 2031b14ea757 ("mm/damon/sysfs: support the physical address space monitoring")
Cc: <stable@xxxxxxxxxxxxxxx> # 5.18.x
Signed-off-by: SeongJae Park <sj@xxxxxxxxxx>
---
 mm/damon/sysfs.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/mm/damon/sysfs.c b/mm/damon/sysfs.c
index d93f7919c3ca1..f72e1e37df9d8 100644
--- a/mm/damon/sysfs.c
+++ b/mm/damon/sysfs.c
@@ -107,8 +107,10 @@ static void damon_sysfs_regions_rm_dirs(struct damon_sysfs_regions *regions)
 	struct damon_sysfs_region **regions_arr = regions->regions_arr;
 	int i;
 
-	for (i = 0; i < regions->nr; i++)
+	for (i = 0; i < regions->nr; i++) {
+		kobject_del(&regions_arr[i]->kobj);
 		kobject_put(&regions_arr[i]->kobj);
+	}
 	regions->nr = 0;
 	kfree(regions_arr);
 	regions->regions_arr = NULL;
-- 
2.47.3