David, Did you observe this in real?The function __get_vm_area_node() allocates a guard page if flag VM_NO_GUARD is not used and I don't see any use of it in source.
In past vmap allocated a guard page even unconditionally. - Leonid. -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html