[Xen-changelog] [linux-2.6.18-xen] balloon: Fix building as a module (totalhigh_pages is not exported to

["Xen patchbot-linux-2.6.18-xen" <patchbot-linux-2.6.18-xen@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User kfraser@xxxxxxxxxxxxxxxxxxxxx
# Date 1184252695 -3600
# Node ID c9cbeaa471402fc2ba786b83cda9184975cb69b8
# Parent  5557a81f0376eacab33e2783012f698b5ff54d74
balloon: Fix building as a module (totalhigh_pages is not exported to
modules).
Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>
---
 drivers/xen/balloon/balloon.c |   12 ++++++++++--
 1 files changed, 10 insertions(+), 2 deletions(-)

diff -r 5557a81f0376 -r c9cbeaa47140 drivers/xen/balloon/balloon.c
--- a/drivers/xen/balloon/balloon.c     Thu Jul 12 09:53:09 2007 +0100
+++ b/drivers/xen/balloon/balloon.c     Thu Jul 12 16:04:55 2007 +0100
@@ -83,7 +83,15 @@ static unsigned long frame_list[PAGE_SIZ
 
 /* VM /proc information for memory */
 extern unsigned long totalram_pages;
+
+#ifndef MODULE
 extern unsigned long totalhigh_pages;
+#define inc_totalhigh_pages() (totalhigh_pages++)
+#define dec_totalhigh_pages() (totalhigh_pages--)
+#else
+#define inc_totalhigh_pages() ((void)0)
+#define dec_totalhigh_pages() ((void)0)
+#endif
 
 /* List of ballooned pages, threaded through the mem_map array. */
 static LIST_HEAD(ballooned_pages);
@@ -119,7 +127,7 @@ static void balloon_append(struct page *
        if (PageHighMem(page)) {
                list_add_tail(PAGE_TO_LIST(page), &ballooned_pages);
                bs.balloon_high++;
-               totalhigh_pages--;
+               dec_totalhigh_pages();
        } else {
                list_add(PAGE_TO_LIST(page), &ballooned_pages);
                bs.balloon_low++;
@@ -139,7 +147,7 @@ static struct page *balloon_retrieve(voi
 
        if (PageHighMem(page)) {
                bs.balloon_high--;
-               totalhigh_pages++;
+               inc_totalhigh_pages();
        }
        else
                bs.balloon_low--;

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