--- a/mm/shmem.c +++ b/mm/shmem.c @@ -29,6 +29,7 @@ #include <linux/mm.h> #include <linux/module.h> #include <linux/swap.h> +#include <linux/ima.h> static struct vfsmount *shm_mnt; @@ -2675,6 +2676,16 @@ out: /* common code */ +void shmem_set_file(struct vm_area_struct *vma, struct file *file) +{ + ima_counts_get(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 @@ -2752,9 +2763,6 @@ int shmem_zero_setup(struct vm_area_stru if (IS_ERR(file)) return PTR_ERR(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 @@ -271,6 +271,7 @@ 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 @@ -514,6 +514,7 @@ struct files_struct *get_files_struct(st return files; } +EXPORT_SYMBOL_GPL(get_files_struct); void put_files_struct(struct files_struct *files) { @@ -535,6 +536,7 @@ void put_files_struct(struct files_struc rcu_read_unlock(); } } +EXPORT_SYMBOL_GPL(put_files_struct); void reset_files_struct(struct files_struct *files) { --- a/kernel/fork.c +++ b/kernel/fork.c @@ -190,6 +190,7 @@ 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 @@ -4390,6 +4390,7 @@ 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 @@ -1203,6 +1203,7 @@ 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 @@ -2615,6 +2616,7 @@ 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 @@ -1182,6 +1182,7 @@ 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) { @@ -1297,6 +1298,7 @@ struct vm_struct *get_vm_area(unsigned l return __get_vm_area_node(size, 1, 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 @@ -736,6 +736,7 @@ extern void show_free_areas(void); int shmem_lock(struct file *file, int lock, struct user_struct *user); struct file *shmem_file_setup(const 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 @@ -1124,6 +1124,7 @@ struct sighand_struct *lock_task_sighand return sighand; } +EXPORT_SYMBOL(lock_task_sighand); /* * send signal info to all the members of a group