[Xen-changelog] Balloon driver should hijack the ->lru list field rather than

[Xen patchbot -unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User kaf24@xxxxxxxxxxxxxxxxxxxx
# Node ID decf309fb47b3f4246540a5e1327663651d266fe
# Parent  72d1cf383c679e1db24c92c7d89d7816b947eabe
Balloon driver should hijack the ->lru list field rather than
adding another list field to every page structure.
Signed-off-by: Keir Fraser <keir@xxxxxxxxxxxxx>

diff -r 72d1cf383c67 -r decf309fb47b 
linux-2.6-xen-sparse/drivers/xen/balloon/balloon.c
--- a/linux-2.6-xen-sparse/drivers/xen/balloon/balloon.c        Tue May 02 
17:17:15 2006 +0100
+++ b/linux-2.6-xen-sparse/drivers/xen/balloon/balloon.c        Tue May 02 
17:23:21 2006 +0100
@@ -94,8 +94,8 @@ static DECLARE_WORK(balloon_worker, ball
 static DECLARE_WORK(balloon_worker, balloon_process, NULL);
 static struct timer_list balloon_timer;
 
-#define PAGE_TO_LIST(p) (&(p)->ballooned)
-#define LIST_TO_PAGE(l) list_entry((l), struct page, ballooned)
+#define PAGE_TO_LIST(p) (&(p)->lru)
+#define LIST_TO_PAGE(l) list_entry((l), struct page, lru)
 #define UNLIST_PAGE(p)                         \
        do {                                    \
                list_del(PAGE_TO_LIST(p));      \
diff -r 72d1cf383c67 -r decf309fb47b linux-2.6-xen-sparse/include/linux/mm.h
--- a/linux-2.6-xen-sparse/include/linux/mm.h   Tue May 02 17:17:15 2006 +0100
+++ b/linux-2.6-xen-sparse/include/linux/mm.h   Tue May 02 17:23:21 2006 +0100
@@ -248,9 +248,6 @@ struct page {
 #if NR_CPUS >= CONFIG_SPLIT_PTLOCK_CPUS
            spinlock_t ptl;
 #endif
-#ifdef CONFIG_XEN
-           struct list_head ballooned;
-#endif
        };
        pgoff_t index;                  /* Our offset within mapping. */
        struct list_head lru;           /* Pageout list, eg. active_list

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