[patch 16/33] xen: xen: add pinned page flag

[Jeremy Fitzhardinge <jeremy@goop.org>]

Add a new definition for PG_owner_priv_1 to define PG_pinned on Xen
pagetable pages.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>

---
 include/linux/page-flags.h |    5 +++++
 1 file changed, 5 insertions(+)

===================================================================
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -93,6 +93,7 @@
 
 /* PG_owner_priv_1 users should have descriptive aliases */
 #define PG_checked		PG_owner_priv_1 /* Used by some filesystems */
+#define PG_pinned		PG_owner_priv_1	/* Xen pinned pagetable */
 
 #if (BITS_PER_LONG > 32)
 /*
@@ -170,6 +171,10 @@ static inline void SetPageUptodate(struc
 #define PageChecked(page)	test_bit(PG_checked, &(page)->flags)
 #define SetPageChecked(page)	set_bit(PG_checked, &(page)->flags)
 #define ClearPageChecked(page)	clear_bit(PG_checked, &(page)->flags)
+
+#define PagePinned(page)	test_bit(PG_pinned, &(page)->flags)
+#define SetPagePinned(page)	set_bit(PG_pinned, &(page)->flags)
+#define ClearPagePinned(page)	clear_bit(PG_pinned, &(page)->flags)
 
 #define PageReserved(page)	test_bit(PG_reserved, &(page)->flags)
 #define SetPageReserved(page)	set_bit(PG_reserved, &(page)->flags)

-- 

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