const: mark struct vm_struct_operations

* mark struct vm_area_struct::vm_ops as const
* mark vm_ops in AGP code

But leave TTM code alone, something is fishy there with global vm_ops
being used.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

4 files changed, 4 insertions, 4 deletions

diff --git a/include/linux/agp_backend.h b/include/linux/agp_backend.h
index 880130f7311f..9101ed64f803 100644
--- a/include/linux/agp_backend.h
+++ b/include/linux/agp_backend.h
@@ -53,7 +53,7 @@ struct agp_kern_info {
         int current_memory;
         bool cant_use_aperture;
         unsigned long page_mask;
-        struct vm_operations_struct *vm_ops;
+        const struct vm_operations_struct *vm_ops;
 };
 
 /*
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 16937995abd4..41a59afc70fa 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -163,7 +163,7 @@ static inline struct hugetlbfs_sb_info *HUGETLBFS_SB(struct super_block *sb)
 }
 
 extern const struct file_operations hugetlbfs_file_operations;
-extern struct vm_operations_struct hugetlb_vm_ops;
+extern const struct vm_operations_struct hugetlb_vm_ops;
 struct file *hugetlb_file_setup(const char *name, size_t size, int acct,
                                 struct user_struct **user, int creat_flags);
 int hugetlb_get_quota(struct address_space *mapping, long delta);
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 21d6aa45206a..84a524afb3dc 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -171,7 +171,7 @@ struct vm_area_struct {
         struct anon_vma *anon_vma;      /* Serialized by page_table_lock */
 
         /* Function pointers to deal with this struct. */
-        struct vm_operations_struct * vm_ops;
+        const struct vm_operations_struct *vm_ops;
 
         /* Information about our backing store: */
         unsigned long vm_pgoff;         /* Offset (within vm_file) in PAGE_SIZE
diff --git a/include/linux/ramfs.h b/include/linux/ramfs.h
index 37aaf2b39863..4e768dda87b0 100644
--- a/include/linux/ramfs.h
+++ b/include/linux/ramfs.h
@@ -17,7 +17,7 @@ extern int ramfs_nommu_mmap(struct file *file, struct vm_area_struct *vma);
 #endif
 
 extern const struct file_operations ramfs_file_operations;
-extern struct vm_operations_struct generic_file_vm_ops;
+extern const struct vm_operations_struct generic_file_vm_ops;
 extern int __init init_rootfs(void);
 
 #endif