| 1 | --- a/mm/shmem.c |
| 2 | +++ b/mm/shmem.c |
| 3 | @@ -2920,6 +2920,16 @@ EXPORT_SYMBOL_GPL(shmem_truncate_range); |
| 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 | @@ -2997,11 +3007,8 @@ 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 | @@ -269,6 +269,7 @@ 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/core.c |
| 63 | +++ b/kernel/sched/core.c |
| 64 | @@ -4106,6 +4106,7 @@ 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 | @@ -1408,6 +1408,7 @@ void zap_page_range(struct vm_area_struc |
| 75 | mmu_notifier_invalidate_range_end(mm, start, end); |
| 76 | tlb_finish_mmu(&tlb, start, end); |
| 77 | } |
| 78 | +EXPORT_SYMBOL_GPL(zap_page_range); |
| 79 | |
| 80 | /** |
| 81 | * zap_page_range_single - remove user pages in a given range |
| 82 | --- a/mm/vmalloc.c |
| 83 | +++ b/mm/vmalloc.c |
| 84 | @@ -1266,6 +1266,7 @@ void unmap_kernel_range(unsigned long ad |
| 85 | vunmap_page_range(addr, end); |
| 86 | flush_tlb_kernel_range(addr, end); |
| 87 | } |
| 88 | +EXPORT_SYMBOL_GPL(unmap_kernel_range); |
| 89 | |
| 90 | int map_vm_area(struct vm_struct *area, pgprot_t prot, struct page ***pages) |
| 91 | { |
| 92 | @@ -1403,6 +1404,7 @@ struct vm_struct *get_vm_area(unsigned l |
| 93 | return __get_vm_area_node(size, 1, flags, VMALLOC_START, VMALLOC_END, |
| 94 | -1, GFP_KERNEL, __builtin_return_address(0)); |
| 95 | } |
| 96 | +EXPORT_SYMBOL_GPL(get_vm_area); |
| 97 | |
| 98 | struct vm_struct *get_vm_area_caller(unsigned long size, unsigned long flags, |
| 99 | const void *caller) |
| 100 | --- a/include/linux/shmem_fs.h |
| 101 | +++ b/include/linux/shmem_fs.h |
| 102 | @@ -46,6 +46,8 @@ extern int shmem_init(void); |
| 103 | extern int shmem_fill_super(struct super_block *sb, void *data, int silent); |
| 104 | extern struct file *shmem_file_setup(const char *name, |
| 105 | loff_t size, unsigned long flags); |
| 106 | + |
| 107 | +extern void shmem_set_file(struct vm_area_struct *vma, struct file *file); |
| 108 | extern int shmem_zero_setup(struct vm_area_struct *); |
| 109 | extern int shmem_lock(struct file *file, int lock, struct user_struct *user); |
| 110 | extern void shmem_unlock_mapping(struct address_space *mapping); |
| 111 | |
