GIT: unionfs2-2.6.27.y: MM/VFS: prevent compile warnings/errors with unknown struct super_block

[Erez Zadok]

commit 9fc3d1cbfa147471e99ca736030756d8cd2c5fa0
Author: Erez_Zadok <ezk at cs.sunysb.edu>
Date:   Sat Aug 11 13:57:38 2007 -0400

    MM/VFS: prevent compile warnings/errors with unknown struct super_block
    
    This is a temp fix for 2.6.23-rc2.
    
    Signed-off-by: Erez Zadok <ezk at cs.sunysb.edu>

diff --git a/include/linux/mm.h b/include/linux/mm.h
index eeb7e56..93963a9 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -18,6 +18,7 @@ struct anon_vma;
 struct file_ra_state;
 struct user_struct;
 struct writeback_control;
+struct super_block;
 
 #ifndef CONFIG_DISCONTIGMEM          /* Don't use mapnrs, do it properly */
 extern unsigned long max_mapnr;