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Merge branch 'kvm-updates/2.6.39' of git://git.kernel.org/pub/scm/virt/kvm/kvm
[pandora-kernel.git]
/
include
/
linux
/
mm.h
diff --git
a/include/linux/mm.h
b/include/linux/mm.h
index
f6385fc
..
581703d
100644
(file)
--- a/
include/linux/mm.h
+++ b/
include/linux/mm.h
@@
-402,16
+402,23
@@
static inline void init_page_count(struct page *page)
/*
* PageBuddy() indicate that the page is free and in the buddy system
* (see mm/page_alloc.c).
/*
* PageBuddy() indicate that the page is free and in the buddy system
* (see mm/page_alloc.c).
+ *
+ * PAGE_BUDDY_MAPCOUNT_VALUE must be <= -2 but better not too close to
+ * -2 so that an underflow of the page_mapcount() won't be mistaken
+ * for a genuine PAGE_BUDDY_MAPCOUNT_VALUE. -128 can be created very
+ * efficiently by most CPU architectures.
*/
*/
+#define PAGE_BUDDY_MAPCOUNT_VALUE (-128)
+
static inline int PageBuddy(struct page *page)
{
static inline int PageBuddy(struct page *page)
{
- return atomic_read(&page->_mapcount) ==
-2
;
+ return atomic_read(&page->_mapcount) ==
PAGE_BUDDY_MAPCOUNT_VALUE
;
}
static inline void __SetPageBuddy(struct page *page)
{
VM_BUG_ON(atomic_read(&page->_mapcount) != -1);
}
static inline void __SetPageBuddy(struct page *page)
{
VM_BUG_ON(atomic_read(&page->_mapcount) != -1);
- atomic_set(&page->_mapcount,
-2
);
+ atomic_set(&page->_mapcount,
PAGE_BUDDY_MAPCOUNT_VALUE
);
}
static inline void __ClearPageBuddy(struct page *page)
}
static inline void __ClearPageBuddy(struct page *page)
@@
-965,6
+972,10
@@
static inline int handle_mm_fault(struct mm_struct *mm,
extern int make_pages_present(unsigned long addr, unsigned long end);
extern int access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, int len, int write);
extern int make_pages_present(unsigned long addr, unsigned long end);
extern int access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, int len, int write);
+int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
+ unsigned long start, int len, unsigned int foll_flags,
+ struct page **pages, struct vm_area_struct **vmas,
+ int *nonblocking);
int get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
unsigned long start, int nr_pages, int write, int force,
struct page **pages, struct vm_area_struct **vmas);
int get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
unsigned long start, int nr_pages, int write, int force,
struct page **pages, struct vm_area_struct **vmas);
@@
-1309,8
+1320,6
@@
int add_from_early_node_map(struct range *range, int az,
int nr_range, int nid);
u64 __init find_memory_core_early(int nid, u64 size, u64 align,
u64 goal, u64 limit);
int nr_range, int nid);
u64 __init find_memory_core_early(int nid, u64 size, u64 align,
u64 goal, u64 limit);
-void *__alloc_memory_core_early(int nodeid, u64 size, u64 align,
- u64 goal, u64 limit);
typedef int (*work_fn_t)(unsigned long, unsigned long, void *);
extern void work_with_active_regions(int nid, work_fn_t work_fn, void *data);
extern void sparse_memory_present_with_active_regions(int nid);
typedef int (*work_fn_t)(unsigned long, unsigned long, void *);
extern void work_with_active_regions(int nid, work_fn_t work_fn, void *data);
extern void sparse_memory_present_with_active_regions(int nid);
@@
-1530,6
+1539,7
@@
struct page *follow_page(struct vm_area_struct *, unsigned long address,
#define FOLL_FORCE 0x10 /* get_user_pages read/write w/o permission */
#define FOLL_MLOCK 0x40 /* mark page as mlocked */
#define FOLL_SPLIT 0x80 /* don't return transhuge pages, split them */
#define FOLL_FORCE 0x10 /* get_user_pages read/write w/o permission */
#define FOLL_MLOCK 0x40 /* mark page as mlocked */
#define FOLL_SPLIT 0x80 /* don't return transhuge pages, split them */
+#define FOLL_HWPOISON 0x100 /* check page is hwpoisoned */
typedef int (*pte_fn_t)(pte_t *pte, pgtable_t token, unsigned long addr,
void *data);
typedef int (*pte_fn_t)(pte_t *pte, pgtable_t token, unsigned long addr,
void *data);
@@
-1622,14
+1632,6
@@
extern int sysctl_memory_failure_recovery;
extern void shake_page(struct page *p, int access);
extern atomic_long_t mce_bad_pages;
extern int soft_offline_page(struct page *page, int flags);
extern void shake_page(struct page *p, int access);
extern atomic_long_t mce_bad_pages;
extern int soft_offline_page(struct page *page, int flags);
-#ifdef CONFIG_MEMORY_FAILURE
-int is_hwpoison_address(unsigned long addr);
-#else
-static inline int is_hwpoison_address(unsigned long addr)
-{
- return 0;
-}
-#endif
extern void dump_page(struct page *page);
extern void dump_page(struct page *page);