[PATCH v2 3/5] btrfs: sysfs, btrfs_sysfs_add_fsid() drop unused argument parent

[Anand Jain <anand.jain@oracle.com>]

Commit 24bd69cb (Btrfs: sysfs: add support to add parent for fsid)
added parent argument in preparation to show the seed fsid under the
sprout fsid as in the patch [1] in the mailing list.

 [1] Btrfs: sysfs: support seed devices in the sysfs layout

But later this idea was superseded by another idea to rename the fsid
as in the commit f93c39970b1d (btrfs: factor out sysfs code for updating
sprout fsid).

So we don't need parent argument anymore.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
---
V2: comment updated.

 fs/btrfs/disk-io.c |  2 +-
 fs/btrfs/sysfs.c   | 11 ++++++-----
 fs/btrfs/sysfs.h   |  5 ++---
 3 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index b521e9085228..264c8f0d7dfa 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -3083,7 +3083,7 @@ int __cold open_ctree(struct super_block *sb,
 
 	btrfs_free_extra_devids(fs_devices, 1);
 
-	ret = btrfs_sysfs_add_fsid(fs_devices, NULL);
+	ret = btrfs_sysfs_add_fsid(fs_devices);
 	if (ret) {
 		btrfs_err(fs_info, "failed to init sysfs fsid interface: %d",
 				ret);
diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c
index a9bb507a06f1..3fda2b3a74b8 100644
--- a/fs/btrfs/sysfs.c
+++ b/fs/btrfs/sysfs.c
@@ -1067,18 +1067,19 @@ void btrfs_sysfs_update_sprout_fsid(struct btrfs_fs_devices *fs_devices,
 static struct kset *btrfs_kset;
 
 /*
+ * Creates:
+ *		/sys/fs/btrfs/UUID
+ *
  * Can be called by the device discovery thread.
- * And parent can be specified for seed device
  */
-int btrfs_sysfs_add_fsid(struct btrfs_fs_devices *fs_devs,
-				struct kobject *parent)
+int btrfs_sysfs_add_fsid(struct btrfs_fs_devices *fs_devs)
 {
 	int error;
 
 	init_completion(&fs_devs->kobj_unregister);
 	fs_devs->fsid_kobj.kset = btrfs_kset;
-	error = kobject_init_and_add(&fs_devs->fsid_kobj,
-				&btrfs_ktype, parent, "%pU", fs_devs->fsid);
+	error = kobject_init_and_add(&fs_devs->fsid_kobj, &btrfs_ktype, NULL,
+				     "%pU", fs_devs->fsid);
 	if (error) {
 		kobject_put(&fs_devs->fsid_kobj);
 		return error;
diff --git a/fs/btrfs/sysfs.h b/fs/btrfs/sysfs.h
index 4a9057def6ad..f7ddcbf4a40d 100644
--- a/fs/btrfs/sysfs.h
+++ b/fs/btrfs/sysfs.h
@@ -18,9 +18,8 @@ int btrfs_sysfs_add_devices_attr(struct btrfs_fs_devices *fs_devices,
 		struct btrfs_device *one_device);
 int btrfs_sysfs_remove_devices_attr(struct btrfs_fs_devices *fs_devices,
                 struct btrfs_device *one_device);
-int btrfs_sysfs_add_fsid(struct btrfs_fs_devices *fs_devs,
-				struct kobject *parent);
-int btrfs_sysfs_add_device(struct btrfs_fs_devices *fs_devs);
+int btrfs_sysfs_add_fsid(struct btrfs_fs_devices *fs_devs);
+int btrfs_sysfs_add_devices_kobj(struct btrfs_fs_devices *fs_devs);
 void btrfs_sysfs_remove_fsid(struct btrfs_fs_devices *fs_devs);
 void btrfs_sysfs_update_sprout_fsid(struct btrfs_fs_devices *fs_devices,
 				    const u8 *fsid);
-- 
1.8.3.1