ext4: ext4_rename should dirty dir_bh with the correct directory

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>
Cc: stable@kernel.org

diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index f8068c7..09f930b 100644 (file)
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -2529,7 +2529,7 @@ 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;