[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>
diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index 2983afd..605f511 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -132,7 +132,7 @@
 	return generic_block_bmap(mapping,block,udf_get_block);
 }
 
-struct address_space_operations udf_aops = {
+const struct address_space_operations udf_aops = {
 	.readpage		= udf_readpage,
 	.writepage		= udf_writepage,
 	.sync_page		= block_sync_page,