2542 struct dentry *lock_rename(struct dentry *p1, struct dentry *p2)  in lock_rename()  argument
2546 	if (p1 == p2) {  in lock_rename()
2547 		mutex_lock_nested(&p1->d_inode->i_mutex, I_MUTEX_PARENT);  in lock_rename()
2551 	mutex_lock(&p1->d_inode->i_sb->s_vfs_rename_mutex);  in lock_rename()
2553 	p = d_ancestor(p2, p1);  in lock_rename()
2556 		mutex_lock_nested(&p1->d_inode->i_mutex, I_MUTEX_CHILD);  in lock_rename()
2560 	p = d_ancestor(p1, p2);  in lock_rename()
2562 		mutex_lock_nested(&p1->d_inode->i_mutex, I_MUTEX_PARENT);  in lock_rename()
2567 	mutex_lock_nested(&p1->d_inode->i_mutex, I_MUTEX_PARENT);  in lock_rename()
2573 void unlock_rename(struct dentry *p1, struct dentry *p2)  in unlock_rename()  argument
2575 	mutex_unlock(&p1->d_inode->i_mutex);  in unlock_rename()
2576 	if (p1 != p2) {  in unlock_rename()
2578 		mutex_unlock(&p1->d_inode->i_sb->s_vfs_rename_mutex);  in unlock_rename()