[PATCH 24/24] Btrfs: sysfs: add check if super kobject is already initialized

[Anand Jain]

---
 fs/btrfs/sysfs.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c
index f8358d2..5c555da 100644
--- a/fs/btrfs/sysfs.c
+++ b/fs/btrfs/sysfs.c
@@ -750,10 +750,14 @@ int btrfs_sysfs_add_fsid(struct btrfs_fs_devices *fs_devs,
        int error = 0;
 
        while (fs_devs) {
-               init_completion(&fs_devs->kobj_unregister);
-               fs_devs->super_kobj.kset = btrfs_kset;
-               error = kobject_init_and_add(&fs_devs->super_kobj,
+               if (!fs_devs->super_kobj.state_initialized) {
+                       init_completion(&fs_devs->kobj_unregister);
+                       fs_devs->super_kobj.kset = btrfs_kset;
+                       error = kobject_init_and_add(&fs_devs->super_kobj,
                                &btrfs_ktype, parent, "%pU", fs_devs->fsid);
+               } else {
+                       error = -EINVAL;
+               }
                if (!follow_seed)
                        return error;
                parent = &fs_devs->super_kobj;
-- 
2.0.0.153.g79dcccc

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