target/linux/generic/patches-3.12/950-vm_exports.patch

   1 --- a/mm/shmem.c
   2 +++ b/mm/shmem.c
   3 @@ -2918,6 +2918,15 @@ static struct dentry_operations anon_ops
   4         .d_dname = simple_dname
   5  };
   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 +}
  14 +EXPORT_SYMBOL_GPL(shmem_set_file);
  15 +
  16  /**
  17   * shmem_file_setup - get an unlinked file living in tmpfs
  18   * @name: name for dentry (to be seen in /proc/<pid>/maps
  19 @@ -2991,11 +3000,8 @@ int shmem_zero_setup(struct vm_area_stru
  20         file = shmem_file_setup("dev/zero", size, vma->vm_flags);
  21         if (IS_ERR(file))
  22                 return PTR_ERR(file);
  23 +       shmem_set_file(vma, file);
  24
  25 -       if (vma->vm_file)
  26 -               fput(vma->vm_file);
  27 -       vma->vm_file = file;
  28 -       vma->vm_ops = &shmem_vm_ops;
  29         return 0;
  30  }
  31
  32 --- a/fs/file.c
  33 +++ b/fs/file.c
  34 @@ -218,6 +218,7 @@ static inline void __set_open_fd(int fd,
  35  {
  36         __set_bit(fd, fdt->open_fds);
  37  }
  38 +EXPORT_SYMBOL_GPL(expand_files);
  39
  40  static inline void __clear_open_fd(int fd, struct fdtable *fdt)
  41  {
  42 --- a/kernel/exit.c
  43 +++ b/kernel/exit.c
  44 @@ -490,6 +490,8 @@ static void exit_mm(struct task_struct *
  45         mm_update_next_owner(mm);
  46         mmput(mm);
  47  }
  48 +EXPORT_SYMBOL_GPL(get_files_struct);
  49 +EXPORT_SYMBOL_GPL(put_files_struct);
  50
  51  /*
  52   * When we die, we re-parent all our children, and try to:
  53 --- a/kernel/sched/core.c
  54 +++ b/kernel/sched/core.c
  55 @@ -3135,6 +3135,7 @@ int can_nice(const struct task_struct *p
  56         return (nice_rlim <= task_rlimit(p, RLIMIT_NICE) ||
  57                 capable(CAP_SYS_NICE));
  58  }
  59 +EXPORT_SYMBOL_GPL(can_nice);
  60
  61  #ifdef __ARCH_WANT_SYS_NICE
  62
  63 --- a/mm/memory.c
  64 +++ b/mm/memory.c
  65 @@ -1392,6 +1392,7 @@ void zap_page_range(struct vm_area_struc
  66         mmu_notifier_invalidate_range_end(mm, start, end);
  67         tlb_finish_mmu(&tlb, start, end);
  68  }
  69 +EXPORT_SYMBOL_GPL(zap_page_range);
  70
  71  /**
  72   * zap_page_range_single - remove user pages in a given range
  73 --- a/mm/vmalloc.c
  74 +++ b/mm/vmalloc.c
  75 @@ -1254,6 +1254,7 @@ void unmap_kernel_range(unsigned long ad
  76         vunmap_page_range(addr, end);
  77         flush_tlb_kernel_range(addr, end);
  78  }
  79 +EXPORT_SYMBOL_GPL(unmap_kernel_range);
  80
  81  int map_vm_area(struct vm_struct *area, pgprot_t prot, struct page ***pages)
  82  {
  83 @@ -1361,6 +1362,7 @@ struct vm_struct *get_vm_area(unsigned l
  84                                   NUMA_NO_NODE, GFP_KERNEL,
  85                                   __builtin_return_address(0));
  86  }
  87 +EXPORT_SYMBOL_GPL(get_vm_area);
  88
  89  struct vm_struct *get_vm_area_caller(unsigned long size, unsigned long flags,
  90                                 const void *caller)
  91 --- a/include/linux/shmem_fs.h
  92 +++ b/include/linux/shmem_fs.h
  93 @@ -47,6 +47,8 @@ extern int shmem_init(void);
  94  extern int shmem_fill_super(struct super_block *sb, void *data, int silent);
  95  extern struct file *shmem_file_setup(const char *name,
  96                                         loff_t size, unsigned long flags);
  97 +
  98 +extern void shmem_set_file(struct vm_area_struct *vma, struct file *file);
  99  extern int shmem_zero_setup(struct vm_area_struct *);
 100  extern int shmem_lock(struct file *file, int lock, struct user_struct *user);
 101  extern void shmem_unlock_mapping(struct address_space *mapping);