ocfs2: adjust code to match locking/unlocking order

Unlocking order in ocfs2_unlink and ocfs2_rename mismatches the
corresponding locking order, although it won't cause issues, adjust the
code so that it looks more reasonable.
Signed-off-by: Joseph Qi <joseph.qi@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/ocfs2/namei.c

@@ -1035,11 +1035,6 @@ static int ocfs2_unlink(struct inode *dir,
 	if (handle)
 		ocfs2_commit_trans(osb, handle);
 
-	if (child_locked)
-		ocfs2_inode_unlock(inode, 1);
-
-	ocfs2_inode_unlock(dir, 1);
-
 	if (orphan_dir) {
 		/* This was locked for us in ocfs2_prepare_orphan_dir() */
 		ocfs2_inode_unlock(orphan_dir, 1);
@@ -1047,6 +1042,11 @@ static int ocfs2_unlink(struct inode *dir,
 		iput(orphan_dir);
 	}
 
+	if (child_locked)
+		ocfs2_inode_unlock(inode, 1);
+
+	ocfs2_inode_unlock(dir, 1);
+
 	brelse(fe_bh);
 	brelse(parent_node_bh);
 
@@ -1633,21 +1633,9 @@ static int ocfs2_rename(struct inode *old_dir,
 	ocfs2_dentry_move(old_dentry, new_dentry, old_dir, new_dir);
 	status = 0;
 bail:
-	if (rename_lock)
-		ocfs2_rename_unlock(osb);
-
 	if (handle)
 		ocfs2_commit_trans(osb, handle);
 
-	if (parents_locked)
-		ocfs2_double_unlock(old_dir, new_dir);
-
-	if (old_child_locked)
-		ocfs2_inode_unlock(old_inode, 1);
-
-	if (new_child_locked)
-		ocfs2_inode_unlock(new_inode, 1);
-
 	if (orphan_dir) {
 		/* This was locked for us in ocfs2_prepare_orphan_dir() */
 		ocfs2_inode_unlock(orphan_dir, 1);
@@ -1655,6 +1643,18 @@ static int ocfs2_rename(struct inode *old_dir,
 		iput(orphan_dir);
 	}
 
+	if (new_child_locked)
+		ocfs2_inode_unlock(new_inode, 1);
+
+	if (old_child_locked)
+		ocfs2_inode_unlock(old_inode, 1);
+
+	if (parents_locked)
+		ocfs2_double_unlock(old_dir, new_dir);
+
+	if (rename_lock)
+		ocfs2_rename_unlock(osb);
+
 	if (new_inode)
 		sync_mapping_buffers(old_inode->i_mapping);