ext4: ext4_rename should dirty dir_bh with the correct directory
Darrick J. Wong [Wed, 31 Aug 2011 15:58:51 +0000 (11:58 -0400)]
commit bcaa992975041e40449be8c010c26192b8c8b409 upstream.

When ext4_rename performs a directory rename (move), dir_bh is a
buffer that is modified to update the '..' link in the directory being
moved (old_inode).  However, ext4_handle_dirty_metadata is called with
the old parent directory inode (old_dir) and dir_bh, which is
incorrect because dir_bh does not belong to the parent inode.  Fix
this error.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

fs/ext4/namei.c

index 1c924fa..46df9a9 100644 (file)
@@ -2530,7 +2530,7 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry,
                PARENT_INO(dir_bh->b_data, new_dir->i_sb->s_blocksize) =
                                                cpu_to_le32(new_dir->i_ino);
                BUFFER_TRACE(dir_bh, "call ext4_handle_dirty_metadata");
-               retval = ext4_handle_dirty_metadata(handle, old_dir, dir_bh);
+               retval = ext4_handle_dirty_metadata(handle, old_inode, dir_bh);
                if (retval) {
                        ext4_std_error(old_dir->i_sb, retval);
                        goto end_rename;