[PATCH] mark address_space_operations const

Same as with already do with the file operations: keep them in .rodata and
prevents people from doing runtime patching.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Steven French <sfrench@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 2d8b348c1192..e04a5cfe874f 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -392,7 +392,7 @@ struct address_space {
         unsigned int            truncate_count; /* Cover race condition with truncate */
         unsigned long           nrpages;        /* number of total pages */
         pgoff_t                 writeback_index;/* writeback starts here */
-        struct address_space_operations *a_ops; /* methods */
+        const struct address_space_operations *a_ops;   /* methods */
         unsigned long           flags;          /* error bits/gfp mask */
         struct backing_dev_info *backing_dev_info; /* device readahead, etc */
         spinlock_t              private_lock;   /* for use by the address_space */
@@ -1405,7 +1405,7 @@ extern void bd_forget(struct inode *inode);
 extern void bdput(struct block_device *);
 extern struct block_device *open_by_devnum(dev_t, unsigned);
 extern const struct file_operations def_blk_fops;
-extern struct address_space_operations def_blk_aops;
+extern const struct address_space_operations def_blk_aops;
 extern const struct file_operations def_chr_fops;
 extern const struct file_operations bad_sock_fops;
 extern const struct file_operations def_fifo_fops;