[PATCH 08/15] 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But later this idea was superseded by another idea to rename the fsid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>
---
 fs/btrfs/disk-io.c |  2 +-
 fs/btrfs/sysfs.c   | 11 +++++------
 fs/btrfs/sysfs.h   |  3 +--
 3 files changed, 7 insertions(+), 9 deletions(-)

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 72191c213ac4..3f6a26d9afcd 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -3082,7 +3082,7 @@ 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 9494ccace624..42aeb2375f2a 100644
--- a/fs/btrfs/sysfs.c
+++ b/fs/btrfs/sysfs.c
@@ -1118,18 +1118,17 @@ void btrfs_sysfs_remove_fsid(struct btrfs_fs_devices *fs_devs)
 }
 
 /*
- * Can be called by the device discovery thread.
- * And parent can be specified for seed device
+ * Creates:
+ * 	/sys/fs/btrfs/UUID
  */
-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 3dac8e163056..6addc35deb67 100644
--- a/fs/btrfs/sysfs.h
+++ b/fs/btrfs/sysfs.h
@@ -18,8 +18,7 @@ int btrfs_sysfs_add_device_info(struct btrfs_fs_devices *fs_devices,
 		struct btrfs_device *one_device);
 int btrfs_sysfs_remove_device_info(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_fsid(struct btrfs_fs_devices *fs_devs);
 int btrfs_sysfs_add_devices_dir(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,
-- 
2.23.0