aboutsummaryrefslogtreecommitdiff
path: root/include/linux/mm.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/mm.h')
-rw-r--r--include/linux/mm.h29
1 files changed, 17 insertions, 12 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 1ffca03f34b..6953a5a53e4 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -25,6 +25,7 @@ extern unsigned long max_mapnr;
#endif
extern unsigned long num_physpages;
+extern unsigned long totalram_pages;
extern void * high_memory;
extern int page_cluster;
@@ -103,6 +104,7 @@ extern unsigned int kobjsize(const void *objp);
#define VM_MIXEDMAP 0x10000000 /* Can contain "struct page" and pure PFN pages */
#define VM_SAO 0x20000000 /* Strong Access Ordering (powerpc) */
#define VM_PFN_AT_MMAP 0x40000000 /* PFNMAP vma that is fully mapped at mmap time */
+#define VM_MERGEABLE 0x80000000 /* KSM may merge identical pages */
#ifndef VM_STACK_DEFAULT_FLAGS /* arch can override this */
#define VM_STACK_DEFAULT_FLAGS VM_DATA_DEFAULT_FLAGS
@@ -283,6 +285,14 @@ static inline int is_vmalloc_addr(const void *x)
return 0;
#endif
}
+#ifdef CONFIG_MMU
+extern int is_vmalloc_or_module_addr(const void *x);
+#else
+static int is_vmalloc_or_module_addr(const void *x)
+{
+ return 0;
+}
+#endif
static inline struct page *compound_head(struct page *page)
{
@@ -701,17 +711,8 @@ extern void pagefault_out_of_memory(void);
extern void show_free_areas(void);
-#ifdef CONFIG_SHMEM
-extern int shmem_lock(struct file *file, int lock, struct user_struct *user);
-#else
-static inline int shmem_lock(struct file *file, int lock,
- struct user_struct *user)
-{
- return 0;
-}
-#endif
+int shmem_lock(struct file *file, int lock, struct user_struct *user);
struct file *shmem_file_setup(const char *name, loff_t size, unsigned long flags);
-
int shmem_zero_setup(struct vm_area_struct *);
#ifndef CONFIG_MMU
@@ -821,6 +822,7 @@ int get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
struct page **pages, struct vm_area_struct **vmas);
int get_user_pages_fast(unsigned long start, int nr_pages, int write,
struct page **pages);
+struct page *get_dump_page(unsigned long addr);
extern int try_to_release_page(struct page * page, gfp_t gfp_mask);
extern void do_invalidatepage(struct page *page, unsigned long offset);
@@ -1064,6 +1066,8 @@ extern void setup_per_cpu_pageset(void);
static inline void setup_per_cpu_pageset(void) {}
#endif
+extern void zone_pcp_update(struct zone *zone);
+
/* nommu.c */
extern atomic_long_t mmap_pages_allocated;
@@ -1232,7 +1236,8 @@ struct page *follow_page(struct vm_area_struct *, unsigned long address,
#define FOLL_WRITE 0x01 /* check pte is writable */
#define FOLL_TOUCH 0x02 /* mark page accessed */
#define FOLL_GET 0x04 /* do get_page on page */
-#define FOLL_ANON 0x08 /* give ZERO_PAGE if no pgtable */
+#define FOLL_DUMP 0x08 /* give error on hole if it would be zero */
+#define FOLL_FORCE 0x10 /* get_user_pages read/write w/o permission */
typedef int (*pte_fn_t)(pte_t *pte, pgtable_t token, unsigned long addr,
void *data);
@@ -1280,7 +1285,7 @@ int in_gate_area_no_task(unsigned long addr);
#define in_gate_area(task, addr) ({(void)task; in_gate_area_no_task(addr);})
#endif /* __HAVE_ARCH_GATE_AREA */
-int drop_caches_sysctl_handler(struct ctl_table *, int, struct file *,
+int drop_caches_sysctl_handler(struct ctl_table *, int,
void __user *, size_t *, loff_t *);
unsigned long shrink_slab(unsigned long scanned, gfp_t gfp_mask,
unsigned long lru_pages);