[PATCH] Drop free_pages()

nr_free_pages is now a simple access to a global variable.  Make it a macro
instead of a function.

The nr_free_pages now requires vmstat.h to be included.  There is one
occurrence in power management where we need to add the include.  Directly
refrer to global_page_state() there to clarify why the #include was added.

[[email protected]: arm build fix]
[[email protected]: sparc64 build fix]
Signed-off-by: Christoph Lameter <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h
index c8d55bc..77caf91 100644
--- a/include/linux/vmstat.h
+++ b/include/linux/vmstat.h
@@ -3,6 +3,7 @@
 
 #include <linux/types.h>
 #include <linux/percpu.h>
+#include <linux/mm.h>
 #include <linux/mmzone.h>
 #include <asm/atomic.h>