ext4: constify xattr_handler

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/ext4/xattr_trusted.c b/fs/ext4/xattr_trusted.c
index 15b50ed..37e6ebc 100644
--- a/fs/ext4/xattr_trusted.c
+++ b/fs/ext4/xattr_trusted.c
@@ -51,7 +51,7 @@
 			      name, value, size, flags);
 }
 
-struct xattr_handler ext4_xattr_trusted_handler = {
+const struct xattr_handler ext4_xattr_trusted_handler = {
 	.prefix	= XATTR_TRUSTED_PREFIX,
 	.list	= ext4_xattr_trusted_list,
 	.get	= ext4_xattr_trusted_get,