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- --- a/mm/shmem.c
- +++ b/mm/shmem.c
- @@ -2974,6 +2974,15 @@ put_memory:
- return res;
- }
-
- +void shmem_set_file(struct vm_area_struct *vma, struct file *file)
- +{
- + if (vma->vm_file)
- + fput(vma->vm_file);
- + vma->vm_file = file;
- + vma->vm_ops = &shmem_vm_ops;
- +}
- +EXPORT_SYMBOL_GPL(shmem_set_file);
- +
- /**
- * shmem_kernel_file_setup - get an unlinked file living in tmpfs which must be
- * kernel internal. There will be NO LSM permission checks against the
- @@ -3013,11 +3022,8 @@ int shmem_zero_setup(struct vm_area_stru
- file = shmem_file_setup("dev/zero", size, vma->vm_flags);
- if (IS_ERR(file))
- return PTR_ERR(file);
- + shmem_set_file(vma, file);
-
- - if (vma->vm_file)
- - fput(vma->vm_file);
- - vma->vm_file = file;
- - vma->vm_ops = &shmem_vm_ops;
- return 0;
- }
-
- --- a/fs/file.c
- +++ b/fs/file.c
- @@ -218,6 +218,7 @@ static inline void __set_open_fd(int fd,
- {
- __set_bit(fd, fdt->open_fds);
- }
- +EXPORT_SYMBOL_GPL(expand_files);
-
- static inline void __clear_open_fd(int fd, struct fdtable *fdt)
- {
- --- a/kernel/exit.c
- +++ b/kernel/exit.c
- @@ -490,6 +490,8 @@ static void exit_mm(struct task_struct *
- mm_update_next_owner(mm);
- mmput(mm);
- }
- +EXPORT_SYMBOL_GPL(get_files_struct);
- +EXPORT_SYMBOL_GPL(put_files_struct);
-
- /*
- * When we die, we re-parent all our children, and try to:
- --- a/kernel/sched/core.c
- +++ b/kernel/sched/core.c
- @@ -2896,6 +2896,7 @@ int can_nice(const struct task_struct *p
- return (nice_rlim <= task_rlimit(p, RLIMIT_NICE) ||
- capable(CAP_SYS_NICE));
- }
- +EXPORT_SYMBOL_GPL(can_nice);
-
- #ifdef __ARCH_WANT_SYS_NICE
-
- --- a/mm/memory.c
- +++ b/mm/memory.c
- @@ -1391,6 +1391,7 @@ void zap_page_range(struct vm_area_struc
- mmu_notifier_invalidate_range_end(mm, start, end);
- tlb_finish_mmu(&tlb, start, end);
- }
- +EXPORT_SYMBOL_GPL(zap_page_range);
-
- /**
- * zap_page_range_single - remove user pages in a given range
- --- a/mm/vmalloc.c
- +++ b/mm/vmalloc.c
- @@ -1260,6 +1260,7 @@ void unmap_kernel_range(unsigned long ad
- vunmap_page_range(addr, end);
- flush_tlb_kernel_range(addr, end);
- }
- +EXPORT_SYMBOL_GPL(unmap_kernel_range);
-
- int map_vm_area(struct vm_struct *area, pgprot_t prot, struct page ***pages)
- {
- @@ -1367,6 +1368,7 @@ struct vm_struct *get_vm_area(unsigned l
- NUMA_NO_NODE, GFP_KERNEL,
- __builtin_return_address(0));
- }
- +EXPORT_SYMBOL_GPL(get_vm_area);
-
- struct vm_struct *get_vm_area_caller(unsigned long size, unsigned long flags,
- const void *caller)
- --- a/include/linux/shmem_fs.h
- +++ b/include/linux/shmem_fs.h
- @@ -47,6 +47,8 @@ extern int shmem_init(void);
- extern int shmem_fill_super(struct super_block *sb, void *data, int silent);
- extern struct file *shmem_file_setup(const char *name,
- loff_t size, unsigned long flags);
- +
- +extern void shmem_set_file(struct vm_area_struct *vma, struct file *file);
- extern struct file *shmem_kernel_file_setup(const char *name, loff_t size,
- unsigned long flags);
- extern int shmem_zero_setup(struct vm_area_struct *);
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