target/linux/generic/patches-3.0/950-vm_exports.patch

   1 --- a/mm/shmem.c
   2 +++ b/mm/shmem.c
   3 @@ -2951,6 +2951,16 @@ out:
   4
   5  /* common code */
   6
   7 +void shmem_set_file(struct vm_area_struct *vma, struct file *file)
   8 +{
   9 +       if (vma->vm_file)
  10 +               fput(vma->vm_file);
  11 +       vma->vm_file = file;
  12 +       vma->vm_ops = &shmem_vm_ops;
  13 +       vma->vm_flags |= VM_CAN_NONLINEAR;
  14 +}
  15 +EXPORT_SYMBOL_GPL(shmem_set_file);
  16 +
  17  /**
  18   * shmem_file_setup - get an unlinked file living in tmpfs
  19   * @name: name for dentry (to be seen in /proc/<pid>/maps
  20 @@ -3028,11 +3038,8 @@ int shmem_zero_setup(struct vm_area_stru
  21         if (IS_ERR(file))
  22                 return PTR_ERR(file);
  23
  24 -       if (vma->vm_file)
  25 -               fput(vma->vm_file);
  26 -       vma->vm_file = file;
  27 -       vma->vm_ops = &shmem_vm_ops;
  28 -       vma->vm_flags |= VM_CAN_NONLINEAR;
  29 +       shmem_set_file(vma, file);
  30 +
  31         return 0;
  32  }
  33
  34 --- a/fs/file.c
  35 +++ b/fs/file.c
  36 @@ -268,6 +268,7 @@ int expand_files(struct files_struct *fi
  37         /* All good, so we try */
  38         return expand_fdtable(files, nr);
  39  }
  40 +EXPORT_SYMBOL_GPL(expand_files);
  41
  42  static int count_open_files(struct fdtable *fdt)
  43  {
  44 --- a/kernel/exit.c
  45 +++ b/kernel/exit.c
  46 @@ -513,6 +513,7 @@ struct files_struct *get_files_struct(st
  47
  48         return files;
  49  }
  50 +EXPORT_SYMBOL_GPL(get_files_struct);
  51
  52  void put_files_struct(struct files_struct *files)
  53  {
  54 @@ -534,6 +535,7 @@ void put_files_struct(struct files_struc
  55                 rcu_read_unlock();
  56         }
  57  }
  58 +EXPORT_SYMBOL_GPL(put_files_struct);
  59
  60  void reset_files_struct(struct files_struct *files)
  61  {
  62 --- a/kernel/sched.c
  63 +++ b/kernel/sched.c
  64 @@ -4937,6 +4937,7 @@ int can_nice(const struct task_struct *p
  65         return (nice_rlim <= task_rlimit(p, RLIMIT_NICE) ||
  66                 capable(CAP_SYS_NICE));
  67  }
  68 +EXPORT_SYMBOL_GPL(can_nice);
  69
  70  #ifdef __ARCH_WANT_SYS_NICE
  71
  72 --- a/mm/memory.c
  73 +++ b/mm/memory.c
  74 @@ -1396,6 +1396,7 @@ unsigned long zap_page_range(struct vm_a
  75         tlb_finish_mmu(&tlb, address, end);
  76         return end;
  77  }
  78 +EXPORT_SYMBOL_GPL(zap_page_range);
  79
  80  /**
  81   * zap_vma_ptes - remove ptes mapping the vma
  82 @@ -3071,6 +3072,7 @@ static inline int check_stack_guard_page
  83         }
  84         return 0;
  85  }
  86 +EXPORT_SYMBOL_GPL(vmtruncate_range);
  87
  88  /*
  89   * We enter with non-exclusive mmap_sem (to exclude vma changes,
  90 --- a/mm/vmalloc.c
  91 +++ b/mm/vmalloc.c
  92 @@ -1245,6 +1245,7 @@ void unmap_kernel_range(unsigned long ad
  93         vunmap_page_range(addr, end);
  94         flush_tlb_kernel_range(addr, end);
  95  }
  96 +EXPORT_SYMBOL_GPL(unmap_kernel_range);
  97
  98  int map_vm_area(struct vm_struct *area, pgprot_t prot, struct page ***pages)
  99  {
 100 @@ -1360,6 +1361,7 @@ struct vm_struct *get_vm_area(unsigned l
 101         return __get_vm_area_node(size, 1, flags, VMALLOC_START, VMALLOC_END,
 102                                 -1, GFP_KERNEL, __builtin_return_address(0));
 103  }
 104 +EXPORT_SYMBOL_GPL(get_vm_area);
 105
 106  struct vm_struct *get_vm_area_caller(unsigned long size, unsigned long flags,
 107                                 void *caller)
 108 --- a/include/linux/mm.h
 109 +++ b/include/linux/mm.h
 110 @@ -871,6 +871,7 @@ extern bool skip_free_areas_node(unsigne
 111
 112  int shmem_lock(struct file *file, int lock, struct user_struct *user);
 113  struct file *shmem_file_setup(const char *name, loff_t size, unsigned long flags);
 114 +void shmem_set_file(struct vm_area_struct *vma, struct file *file);
 115  int shmem_zero_setup(struct vm_area_struct *);
 116
 117  extern int can_do_mlock(void);