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@@ -0,0 +1,113 @@
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+--- a/mm/shmem.c
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++++ b/mm/shmem.c
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+@@ -2480,6 +2480,15 @@ static int shmem_get_sb(struct file_syst
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+ return get_sb_nodev(fs_type, flags, data, shmem_fill_super, mnt);
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+ }
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+
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++void shmem_set_file(struct vm_area_struct *vma, struct file *file)
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++{
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++ if (vma->vm_file)
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++ fput(vma->vm_file);
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++ vma->vm_file = file;
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++ vma->vm_ops = &shmem_vm_ops;
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++}
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++EXPORT_SYMBOL_GPL(shmem_set_file);
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++
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+ static struct file_system_type tmpfs_fs_type = {
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+ .owner = THIS_MODULE,
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+ .name = "tmpfs",
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+@@ -2600,9 +2609,6 @@ int shmem_zero_setup(struct vm_area_stru
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+ if (IS_ERR(file))
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+ return PTR_ERR(file);
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+
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+- if (vma->vm_file)
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+- fput(vma->vm_file);
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+- vma->vm_file = file;
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+- vma->vm_ops = &shmem_vm_ops;
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++ shmem_set_file(vma, vma->vm_file);
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+ return 0;
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+ }
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+--- a/fs/file.c
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++++ b/fs/file.c
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+@@ -270,6 +270,7 @@ int expand_files(struct files_struct *fi
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+ /* All good, so we try */
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+ return expand_fdtable(files, nr);
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+ }
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++EXPORT_SYMBOL_GPL(expand_files);
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+
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+ static int count_open_files(struct fdtable *fdt)
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+ {
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+--- a/kernel/exit.c
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++++ b/kernel/exit.c
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+@@ -509,6 +509,7 @@ struct files_struct *get_files_struct(st
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+
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+ return files;
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+ }
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++EXPORT_SYMBOL_GPL(get_files_struct);
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+
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+ void put_files_struct(struct files_struct *files)
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+ {
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+@@ -528,6 +529,7 @@ void put_files_struct(struct files_struc
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+ free_fdtable(fdt);
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+ }
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+ }
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++EXPORT_SYMBOL_GPL(put_files_struct);
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+
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+ void reset_files_struct(struct files_struct *files)
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+ {
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+--- a/kernel/fork.c
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++++ b/kernel/fork.c
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+@@ -155,6 +155,7 @@ void __put_task_struct(struct task_struc
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+ if (!profile_handoff_task(tsk))
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+ free_task(tsk);
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+ }
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++EXPORT_SYMBOL_GPL(__put_task_struct);
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+
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+ /*
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+ * macro override instead of weak attribute alias, to workaround
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+--- a/kernel/sched.c
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++++ b/kernel/sched.c
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+@@ -5015,6 +5015,7 @@ int can_nice(const struct task_struct *p
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+ return (nice_rlim <= p->signal->rlim[RLIMIT_NICE].rlim_cur ||
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+ capable(CAP_SYS_NICE));
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+ }
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++EXPORT_SYMBOL_GPL(can_nice);
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+
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+ #ifdef __ARCH_WANT_SYS_NICE
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+
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+--- a/mm/memory.c
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++++ b/mm/memory.c
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+@@ -993,6 +993,7 @@ unsigned long zap_page_range(struct vm_a
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+ tlb_finish_mmu(tlb, address, end);
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+ return end;
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+ }
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++EXPORT_SYMBOL_GPL(zap_page_range);
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+
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+ /**
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+ * zap_vma_ptes - remove ptes mapping the vma
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+@@ -2271,6 +2272,7 @@ int vmtruncate_range(struct inode *inode
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+
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+ return 0;
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+ }
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++EXPORT_SYMBOL_GPL(vmtruncate_range);
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+
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+ /*
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+ * We enter with non-exclusive mmap_sem (to exclude vma changes,
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+--- a/mm/vmalloc.c
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++++ b/mm/vmalloc.c
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+@@ -980,6 +980,7 @@ void unmap_kernel_range(unsigned long ad
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+ vunmap_page_range(addr, end);
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+ flush_tlb_kernel_range(addr, end);
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+ }
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++EXPORT_SYMBOL_GPL(unmap_kernel_range);
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+
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+ int map_vm_area(struct vm_struct *area, pgprot_t prot, struct page ***pages)
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+ {
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+@@ -1085,6 +1086,7 @@ struct vm_struct *get_vm_area(unsigned l
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+ return __get_vm_area_node(size, flags, VMALLOC_START, VMALLOC_END,
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+ -1, GFP_KERNEL, __builtin_return_address(0));
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+ }
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++EXPORT_SYMBOL_GPL(get_vm_area);
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+
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+ struct vm_struct *get_vm_area_caller(unsigned long size, unsigned long flags,
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+ void *caller)
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