--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -2606,6 +2606,16 @@ int shmem_unuse(swp_entry_t entry, struc
 
 /* common code */
 
+void shmem_set_file(struct vm_area_struct *vma, struct file *file)
+{
+	ima_shm_check(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_file_setup - get an unlinked file living in tmpfs
  * @name: name for dentry (to be seen in /proc/<pid>/maps
@@ -2684,11 +2694,7 @@ int shmem_zero_setup(struct vm_area_stru
 	if (IS_ERR(file))
 		return PTR_ERR(file);
 
-	ima_shm_check(file);
-	if (vma->vm_file)
-		fput(vma->vm_file);
-	vma->vm_file = file;
-	vma->vm_ops = &shmem_vm_ops;
+	shmem_set_file(vma, file);
 	return 0;
 }
 
--- a/fs/file.c
+++ b/fs/file.c
@@ -270,6 +270,7 @@ int expand_files(struct files_struct *fi
 	/* All good, so we try */
 	return expand_fdtable(files, nr);
 }
+EXPORT_SYMBOL_GPL(expand_files);
 
 static int count_open_files(struct fdtable *fdt)
 {
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -508,6 +508,7 @@ struct files_struct *get_files_struct(st
 
 	return files;
 }
+EXPORT_SYMBOL_GPL(get_files_struct);
 
 void put_files_struct(struct files_struct *files)
 {
@@ -527,6 +528,7 @@ void put_files_struct(struct files_struc
 		free_fdtable(fdt);
 	}
 }
+EXPORT_SYMBOL_GPL(put_files_struct);
 
 void reset_files_struct(struct files_struct *files)
 {
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -160,6 +160,7 @@ void __put_task_struct(struct task_struc
 	if (!profile_handoff_task(tsk))
 		free_task(tsk);
 }
+EXPORT_SYMBOL_GPL(__put_task_struct);
 
 /*
  * macro override instead of weak attribute alias, to workaround
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -5666,6 +5666,7 @@ int can_nice(const struct task_struct *p
 	return (nice_rlim <= p->signal->rlim[RLIMIT_NICE].rlim_cur ||
 		capable(CAP_SYS_NICE));
 }
+EXPORT_SYMBOL_GPL(can_nice);
 
 #ifdef __ARCH_WANT_SYS_NICE
 
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1063,6 +1063,7 @@ unsigned long zap_page_range(struct vm_a
 		tlb_finish_mmu(tlb, address, end);
 	return end;
 }
+EXPORT_SYMBOL_GPL(zap_page_range);
 
 /**
  * zap_vma_ptes - remove ptes mapping the vma
@@ -2438,6 +2439,7 @@ int vmtruncate_range(struct inode *inode
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(vmtruncate_range);
 
 /*
  * We enter with non-exclusive mmap_sem (to exclude vma changes,
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -1101,6 +1101,7 @@ 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)
 {
@@ -1214,6 +1215,7 @@ struct vm_struct *get_vm_area(unsigned l
 	return __get_vm_area_node(size, flags, VMALLOC_START, VMALLOC_END,
 				-1, 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,
 				void *caller)
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -726,6 +726,7 @@ static inline int shmem_lock(struct file
 #endif
 struct file *shmem_file_setup(char *name, loff_t size, unsigned long flags);
 
+void shmem_set_file(struct vm_area_struct *vma, struct file *file);
 int shmem_zero_setup(struct vm_area_struct *);
 
 #ifndef CONFIG_MMU
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1053,6 +1053,7 @@ struct sighand_struct *lock_task_sighand
 
 	return sighand;
 }
+EXPORT_SYMBOL(lock_task_sighand);
 
 /*
  * send signal info to all the members of a group
