fold unlocking the children into dentry_unlock_parents_for_move()

... renaming it into dentry_unlock_for_move() and making it more
symmetric with dentry_lock_for_move().
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/dcache.c

@@ -2442,13 +2442,14 @@ static void dentry_lock_for_move(struct dentry *dentry, struct dentry *target)
 	}
 }
 
-static void dentry_unlock_parents_for_move(struct dentry *dentry,
-					struct dentry *target)
+static void dentry_unlock_for_move(struct dentry *dentry, struct dentry *target)
 {
 	if (target->d_parent != dentry->d_parent)
 		spin_unlock(&dentry->d_parent->d_lock);
 	if (target->d_parent != target)
 		spin_unlock(&target->d_parent->d_lock);
+	spin_unlock(&target->d_lock);
+	spin_unlock(&dentry->d_lock);
 }
 
 /*
@@ -2531,9 +2532,7 @@ static void __d_move(struct dentry *dentry, struct dentry *target,
 	write_seqcount_end(&target->d_seq);
 	write_seqcount_end(&dentry->d_seq);
 
-	dentry_unlock_parents_for_move(dentry, target);
-	spin_unlock(&target->d_lock);
-	spin_unlock(&dentry->d_lock);
+	dentry_unlock_for_move(dentry, target);
 }
 
 /*