[REVIEW] Invalidate dentry on unlink/rmdir if using CI mode

["Barry Naujok" <bnaujok@xxxxxxx>]

Once of the interesting features of vfs_unlink/d_delete functionality
is that if it's the only inode being referenced, it makes the dentry
negative. CI doesn't work with negative dentries, so the following code
invalidate the dentry in CI mode.

--

--- a/fs/xfs/linux-2.6/xfs_iops.c
+++ b/fs/xfs/linux-2.6/xfs_iops.c
@@ -482,6 +482,8 @@ xfs_vn_unlink(
        if (likely(!error)) {
                xfs_validate_fields(dir);       /* size needs update */
                xfs_validate_fields(inode);
+               if (xfs_sb_version_hasasciici(&XFS_M(dir->i_sb)->m_sb))
+                       d_invalidate(dentry);
        }
        return -error;
 }
@@ -538,6 +540,8 @@ xfs_vn_rmdir(
        if (likely(!error)) {
                xfs_validate_fields(inode);
                xfs_validate_fields(dir);
+               if (xfs_sb_version_hasasciici(&XFS_M(dir->i_sb)->m_sb))
+                       d_invalidate(dentry);
        }
        return -error;
 }