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

Jeremy Fitzhardinge
2007-05-22T15:25:21Z

[-- Attachment #1: xen-add-pinned-pageflag.patch --]
[-- Type: text/plain, Size: 1202 bytes --]

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)

--