*/
static inline int is_linear_pfn_mapping(struct vm_area_struct *vma)
{
- return (vma->vm_flags & VM_PFN_AT_MMAP);
+ return !!(vma->vm_flags & VM_PFN_AT_MMAP);
}
static inline int is_pfn_mapping(struct vm_area_struct *vma)
{
- return (vma->vm_flags & VM_PFNMAP);
+ return !!(vma->vm_flags & VM_PFNMAP);
}
/*
#define NODE_NOT_IN_PAGE_FLAGS
#endif
-#ifndef PFN_SECTION_SHIFT
-#define PFN_SECTION_SHIFT 0
-#endif
-
/*
* Define the bit shifts to access each section. For non-existent
* sections we define the shift as 0; that plus a 0 mask ensures
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
-extern unsigned long shmem_get_unmapped_area(struct file *file,
- unsigned long addr,
- unsigned long len,
- unsigned long pgoff,
- unsigned long flags);
-#endif
-
extern int can_do_mlock(void);
extern int user_shm_lock(size_t, struct user_struct *);
extern void user_shm_unlock(size_t, struct user_struct *);
/*
* per-process(per-mm_struct) statistics.
*/
-#if defined(SPLIT_RSS_COUNTING)
-/*
- * The mm counters are not protected by its page_table_lock,
- * so must be incremented atomically.
- */
static inline void set_mm_counter(struct mm_struct *mm, int member, long value)
{
atomic_long_set(&mm->rss_stat.count[member], value);
}
+#if defined(SPLIT_RSS_COUNTING)
unsigned long get_mm_counter(struct mm_struct *mm, int member);
-
-static inline void add_mm_counter(struct mm_struct *mm, int member, long value)
-{
- atomic_long_add(value, &mm->rss_stat.count[member]);
-}
-
-static inline void inc_mm_counter(struct mm_struct *mm, int member)
-{
- atomic_long_inc(&mm->rss_stat.count[member]);
-}
-
-static inline void dec_mm_counter(struct mm_struct *mm, int member)
-{
- atomic_long_dec(&mm->rss_stat.count[member]);
-}
-
-#else /* !USE_SPLIT_PTLOCKS */
-/*
- * The mm counters are protected by its page_table_lock,
- * so can be incremented directly.
- */
-static inline void set_mm_counter(struct mm_struct *mm, int member, long value)
-{
- mm->rss_stat.count[member] = value;
-}
-
+#else
static inline unsigned long get_mm_counter(struct mm_struct *mm, int member)
{
- return mm->rss_stat.count[member];
+ return atomic_long_read(&mm->rss_stat.count[member]);
}
+#endif
static inline void add_mm_counter(struct mm_struct *mm, int member, long value)
{
- mm->rss_stat.count[member] += value;
+ atomic_long_add(value, &mm->rss_stat.count[member]);
}
static inline void inc_mm_counter(struct mm_struct *mm, int member)
{
- mm->rss_stat.count[member]++;
+ atomic_long_inc(&mm->rss_stat.count[member]);
}
static inline void dec_mm_counter(struct mm_struct *mm, int member)
{
- mm->rss_stat.count[member]--;
+ atomic_long_dec(&mm->rss_stat.count[member]);
}
-#endif /* !USE_SPLIT_PTLOCKS */
-
static inline unsigned long get_mm_rss(struct mm_struct *mm)
{
return get_mm_counter(mm, MM_FILEPAGES) +
extern int mm_take_all_locks(struct mm_struct *mm);
extern void mm_drop_all_locks(struct mm_struct *mm);
-#ifdef CONFIG_PROC_FS
/* From fs/proc/base.c. callers must _not_ hold the mm's exe_file_lock */
extern void added_exe_file_vma(struct mm_struct *mm);
extern void removed_exe_file_vma(struct mm_struct *mm);
-#else
-static inline void added_exe_file_vma(struct mm_struct *mm)
-{}
-
-static inline void removed_exe_file_vma(struct mm_struct *mm)
-{}
-#endif /* CONFIG_PROC_FS */
+extern void set_mm_exe_file(struct mm_struct *mm, struct file *new_exe_file);
+extern struct file *get_mm_exe_file(struct mm_struct *mm);
extern int may_expand_vm(struct mm_struct *mm, unsigned long npages);
extern int install_special_mapping(struct mm_struct *mm,
unsigned long flag, unsigned long pgoff);
extern unsigned long mmap_region(struct file *file, unsigned long addr,
unsigned long len, unsigned long flags,
- unsigned int vm_flags, unsigned long pgoff);
+ vm_flags_t vm_flags, unsigned long pgoff);
static inline unsigned long do_mmap(struct file *file, unsigned long addr,
unsigned long len, unsigned long prot,