[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>

fs/isofs/inode.c

@@ -1054,7 +1054,7 @@ static sector_t _isofs_bmap(struct address_space *mapping, sector_t block)
 	return generic_block_bmap(mapping,block,isofs_get_block);
 }
 
-static struct address_space_operations isofs_aops = {
+static const struct address_space_operations isofs_aops = {
 	.readpage = isofs_readpage,
 	.sync_page = block_sync_page,
 	.bmap = _isofs_bmap