TTU_UNMAP = 1, /* unmap mode */
TTU_MIGRATION = 2, /* migration mode */
TTU_MUNLOCK = 4, /* munlock mode */
+ TTU_LZFREE = 8, /* lazy free mode */
TTU_IGNORE_MLOCK = (1 << 8), /* ignore mlock */
TTU_IGNORE_ACCESS = (1 << 9), /* don't age */
struct anon_vma *page_get_anon_vma(struct page *page);
+/* bitflags for do_page_add_anon_rmap() */
+#define RMAP_EXCLUSIVE 0x01
+#define RMAP_COMPOUND 0x02
+
/*
* rmap interfaces called when adding or removing pte of page
*/
void page_move_anon_rmap(struct page *, struct vm_area_struct *, unsigned long);
-void page_add_anon_rmap(struct page *, struct vm_area_struct *, unsigned long);
+void page_add_anon_rmap(struct page *, struct vm_area_struct *,
+ unsigned long, bool);
void do_page_add_anon_rmap(struct page *, struct vm_area_struct *,
unsigned long, int);
-void page_add_new_anon_rmap(struct page *, struct vm_area_struct *, unsigned long);
+void page_add_new_anon_rmap(struct page *, struct vm_area_struct *,
+ unsigned long, bool);
void page_add_file_rmap(struct page *);
-void page_remove_rmap(struct page *);
+void page_remove_rmap(struct page *, bool);
void hugepage_add_anon_rmap(struct page *, struct vm_area_struct *,
unsigned long);
void hugepage_add_new_anon_rmap(struct page *, struct vm_area_struct *,
unsigned long);
-static inline void page_dup_rmap(struct page *page)
+static inline void page_dup_rmap(struct page *page, bool compound)
{
- atomic_inc(&page->_mapcount);
+ atomic_inc(compound ? compound_mapcount_ptr(page) : &page->_mapcount);
}
/*
return ptep;
}
+/*
+ * Used by idle page tracking to check if a page was referenced via page
+ * tables.
+ */
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
+bool page_check_address_transhuge(struct page *page, struct mm_struct *mm,
+ unsigned long address, pmd_t **pmdp,
+ pte_t **ptep, spinlock_t **ptlp);
+#else
+static inline bool page_check_address_transhuge(struct page *page,
+ struct mm_struct *mm, unsigned long address,
+ pmd_t **pmdp, pte_t **ptep, spinlock_t **ptlp)
+{
+ *ptep = page_check_address(page, mm, address, ptlp, 0);
+ *pmdp = NULL;
+ return !!*ptep;
+}
+#endif
+
/*
* Used by swapoff to help locate where page is expected in vma.
*/
#define SWAP_AGAIN 1
#define SWAP_FAIL 2
#define SWAP_MLOCK 3
+#define SWAP_LZFREE 4
#endif /* _LINUX_RMAP_H */