Fedora kernel-2.6.17-1.2142_FC4 patched with stable patch-2.6.17.4-vs2.0.2-rc26.diff

[linux-2.6.git] / include / linux / rmap.h

diff --git a/include/linux/rmap.h b/include/linux/rmap.h
index e314834..d6b9bcd 100644 (file)
--- a/include/linux/rmap.h
+++ b/include/linux/rmap.h
@@ -7,13 +7,9 @@
 #include <linux/config.h>
 #include <linux/list.h>
 #include <linux/slab.h>
+#include <linux/mm.h>
 #include <linux/spinlock.h>
 
-#define page_map_lock(page) \
-       bit_spin_lock(PG_maplock, (unsigned long *)&(page)->flags)
-#define page_map_unlock(page) \
-       bit_spin_unlock(PG_maplock, (unsigned long *)&(page)->flags)
-
 /*
  * The anon_vma heads a list of private "related" vmas, to scan if
  * an anonymous page pointing to this anon_vma needs to be unmapped:
@@ -75,6 +71,7 @@ void __anon_vma_link(struct vm_area_struct *);
  * rmap interfaces called when adding or removing pte of page
  */
 void page_add_anon_rmap(struct page *, struct vm_area_struct *, unsigned long);
+void page_add_new_anon_rmap(struct page *, struct vm_area_struct *, unsigned long);
 void page_add_file_rmap(struct page *);
 void page_remove_rmap(struct page *);
 
@@ -87,16 +84,26 @@ void page_remove_rmap(struct page *);
  */
 static inline void page_dup_rmap(struct page *page)
 {
-       page_map_lock(page);
-       page->mapcount++;
-       page_map_unlock(page);
+       atomic_inc(&page->_mapcount);
 }
 
 /*
  * Called from mm/vmscan.c to handle paging out
  */
-int page_referenced(struct page *);
-int try_to_unmap(struct page *);
+int page_referenced(struct page *, int is_locked);
+int try_to_unmap(struct page *, int ignore_refs);
+void remove_from_swap(struct page *page);
+
+/*
+ * Called from mm/filemap_xip.c to unmap empty zero page
+ */
+pte_t *page_check_address(struct page *, struct mm_struct *,
+                               unsigned long, spinlock_t **);
+
+/*
+ * Used by swapoff to help locate where page is expected in vma.
+ */
+unsigned long page_address_in_vma(struct page *, struct vm_area_struct *);
 
 #else  /* !CONFIG_MMU */
 
@@ -104,8 +111,8 @@ int try_to_unmap(struct page *);
 #define anon_vma_prepare(vma)  (0)
 #define anon_vma_link(vma)     do {} while (0)
 
-#define page_referenced(page)  TestClearPageReferenced(page)
-#define try_to_unmap(page)     SWAP_FAIL
+#define page_referenced(page,l) TestClearPageReferenced(page)
+#define try_to_unmap(page, refs) SWAP_FAIL
 
 #endif /* CONFIG_MMU */