sysfs: Create mountpoints with sysfs_create_mount_point

This allows for better documentation in the code and
it allows for a simpler and fully correct version of
fs_fully_visible to be written.

The mount points converted and their filesystems are:
/sys/hypervisor/s390/       s390_hypfs
/sys/kernel/config/         configfs
/sys/kernel/debug/          debugfs
/sys/firmware/efi/efivars/  efivarfs
/sys/fs/fuse/connections/   fusectl
/sys/fs/pstore/             pstore
/sys/kernel/tracing/        tracefs
/sys/fs/cgroup/             cgroup
/sys/kernel/security/       securityfs
/sys/fs/selinux/            selinuxfs
/sys/fs/smackfs/            smackfs

Cc: stable@vger.kernel.org
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>

1 files changed, 4 insertions, 6 deletions

diff --git a/fs/configfs/mount.c b/fs/configfs/mount.c
index da94e41bdbf6..bca58da65e2b 100644
--- a/fs/configfs/mount.c
+++ b/fs/configfs/mount.c
@@ -129,8 +129,6 @@ void configfs_release_fs(void)
 }
 
 
-static struct kobject *config_kobj;
-
 static int __init configfs_init(void)
 {
         int err = -ENOMEM;
@@ -141,8 +139,8 @@ static int __init configfs_init(void)
         if (!configfs_dir_cachep)
                 goto out;
 
-        config_kobj = kobject_create_and_add("config", kernel_kobj);
-        if (!config_kobj)
+        err = sysfs_create_mount_point(kernel_kobj, "config");
+        if (err)
                 goto out2;
 
         err = register_filesystem(&configfs_fs_type);
@@ -152,7 +150,7 @@ static int __init configfs_init(void)
         return 0;
 out3:
         pr_err("Unable to register filesystem!\n");
-        kobject_put(config_kobj);
+        sysfs_remove_mount_point(kernel_kobj, "config");
 out2:
         kmem_cache_destroy(configfs_dir_cachep);
         configfs_dir_cachep = NULL;
@@ -163,7 +161,7 @@ out:
 static void __exit configfs_exit(void)
 {
         unregister_filesystem(&configfs_fs_type);
-        kobject_put(config_kobj);
+        sysfs_remove_mount_point(kernel_kobj, "config");
         kmem_cache_destroy(configfs_dir_cachep);
         configfs_dir_cachep = NULL;
 }