fs: remove the unused mempages parameter

Since the mempages parameter is actually not used, they should be removed.

Now there is only files_init use the mempages parameter,

 	files_init(mempages);

but I don't think the adaptation to mempages in files_init is really
useful; and if files_init also changed to the prototype void (*func)(void),
the wrapper vfs_caches_init would also not need the mempages parameter.

Signed-off-by: Denis Cheng <crquan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 8b3580d..73f0bdb 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -300,9 +300,9 @@
 struct vm_area_struct;
 struct vfsmount;
 
-extern void __init inode_init(unsigned long);
+extern void __init inode_init(void);
 extern void __init inode_init_early(void);
-extern void __init mnt_init(unsigned long);
+extern void __init mnt_init(void);
 extern void __init files_init(unsigned long);
 
 struct buffer_head;