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--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -2963,6 +2963,15 @@ 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
@@ -3002,11 +3011,8 @@ 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
@@ -491,6 +491,8 @@ 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
@@ -3052,6 +3052,7 @@ 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
@@ -1392,6 +1392,7 @@ 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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