On 10/14/2014 04:29 PM, David Cohen wrote: >> + VM_BUG_ON(PageTail(page)); >> > + VM_BUG_ON(PageHead(page) && compound_order(page) != order); > It may be too severe. AFAIU we're not talking about a fatal error. > How about VM_WARN_ON()? VM_BUG_ON() should catch anything which is not "supposed" to happen, and not just the severe stuff. Unlike BUG_ON, VM_BUG_ON only gets hit with mm debugging enabled. Thanks, Sasha -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>