fix 2.6.31 compile with union mounts disabled

SVN-Revision: 17730

target/linux/generic-2.6/patches-2.6.31/230-union_mounts.patch

@@ -4901,8 +4901,8 @@
 +#define IS_MNT_UNION(x)			(0)
 +#define is_unionized(x, y)		(0)
 +#define append_to_union(x1, y1, x2, y2)	({ BUG(); (0); })
-+#define follow_union_down(x, y)		({ (0); })
-+#define follow_union_mount(x, y)	({ (0); })
++#define follow_union_down(x)		({ (0); })
++#define follow_union_mount(x)	({ (0); })
 +#define __d_drop_unions(x)		do { } while (0)
 +#define shrink_d_unions(x)		do { } while (0)
 +#define __shrink_d_unions(x,y)		do { } while (0)

target/linux/generic-2.6/patches-2.6.31/232-union_mounts_compile_fix.patch

@@ -0,0 +1,11 @@
+--- a/include/linux/union.h
++++ b/include/linux/union.h
+@@ -77,7 +77,7 @@
+ #define __union_copyup(x, y, z)		({ BUG(); (0); })
+ #define union_copyup(x, y)		({ (0); })
+ #define union_copyup_dir(x)		({ BUG(); (0); })
+-#define union_permission(x, y)		inode_permission(x->dentry->d_inode, y)
++#define union_permission(x, y)		inode_permission((x)->dentry->d_inode, y)
+ 
+ #endif	/* CONFIG_UNION_MOUNT */
+ #endif	/* __KERNEL__ */