[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/befs/linuxvfs.c b/fs/befs/linuxvfs.c
index 08201fa..a83e889 100644
--- a/fs/befs/linuxvfs.c
+++ b/fs/befs/linuxvfs.c
@@ -73,7 +73,7 @@
 	.lookup		= befs_lookup,
 };
 
-static struct address_space_operations befs_aops = {
+static const struct address_space_operations befs_aops = {
 	.readpage	= befs_readpage,
 	.sync_page	= block_sync_page,
 	.bmap		= befs_bmap,