[PATCH 2/3] erofs: convert to use kobject_is_added()

[Yangtao Li <frank.li@vivo.com>]

Use kobject_is_added() instead of directly accessing the internal
variables of kobject. BTW kill kobject_del() directly, because
kobject_put() actually covers kobject removal automatically.

Signed-off-by: Yangtao Li <frank.li@vivo.com>
---
 fs/erofs/sysfs.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/fs/erofs/sysfs.c b/fs/erofs/sysfs.c
index 435e515c0792..daac23e32026 100644
--- a/fs/erofs/sysfs.c
+++ b/fs/erofs/sysfs.c
@@ -240,8 +240,7 @@ void erofs_unregister_sysfs(struct super_block *sb)
 {
 	struct erofs_sb_info *sbi = EROFS_SB(sb);
 
-	if (sbi->s_kobj.state_in_sysfs) {
-		kobject_del(&sbi->s_kobj);
+	if (kobject_is_added(&sbi->s_kobj)) {
 		kobject_put(&sbi->s_kobj);
 		wait_for_completion(&sbi->s_kobj_unregister);
 	}
-- 
2.35.1