- down(&dentry->d_inode->i_sem);
- error = sysfs_add_link(dentry, name, target);
- up(&dentry->d_inode->i_sem);
+ mutex_lock(&dentry->d_inode->i_mutex);
+ if (!sysfs_dirent_exist(dentry->d_fsdata, name))
+ error = sysfs_add_link(dentry, name, target);
+ mutex_unlock(&dentry->d_inode->i_mutex);