1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
|
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -2710,6 +2710,16 @@ out:
/* common code */
+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;
+ vma->vm_flags |= VM_CAN_NONLINEAR;
+}
+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
@@ -2787,10 +2797,7 @@ 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;
- vma->vm_flags |= VM_CAN_NONLINEAR;
+ shmem_set_file(vma, file);
+
return 0;
}
--- a/fs/file.c
+++ b/fs/file.c
@@ -264,6 +264,7 @@ 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
@@ -513,6 +513,7 @@ struct files_struct *get_files_struct(st
return files;
}
+EXPORT_SYMBOL_GPL(get_files_struct);
void put_files_struct(struct files_struct *files)
{
@@ -534,6 +535,7 @@ 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
@@ -193,6 +193,7 @@ 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
@@ -4641,6 +4641,7 @@ 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
@@ -1229,6 +1229,7 @@ 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
@@ -2692,6 +2693,7 @@ 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
@@ -1193,6 +1193,7 @@ 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)
{
@@ -1308,6 +1309,7 @@ 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
@@ -863,6 +863,7 @@ 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
|
