# ifdef CONFIG_EXT4_FS_XATTR
-extern struct xattr_handler ext4_xattr_user_handler;
-extern struct xattr_handler ext4_xattr_trusted_handler;
-extern struct xattr_handler ext4_xattr_acl_access_handler;
-extern struct xattr_handler ext4_xattr_acl_default_handler;
-extern struct xattr_handler ext4_xattr_security_handler;
+extern const struct xattr_handler ext4_xattr_user_handler;
+extern const struct xattr_handler ext4_xattr_trusted_handler;
+extern const struct xattr_handler ext4_xattr_acl_access_handler;
+extern const struct xattr_handler ext4_xattr_acl_default_handler;
+extern const struct xattr_handler ext4_xattr_security_handler;
extern ssize_t ext4_listxattr(struct dentry *, char *, size_t);
extern int init_ext4_xattr(void);
extern void exit_ext4_xattr(void);
-extern struct xattr_handler *ext4_xattr_handlers[];
+extern const struct xattr_handler *ext4_xattr_handlers[];
# else /* CONFIG_EXT4_FS_XATTR */