On Mon, Apr 28, 2014 at 11:53:28PM +0800, Jianyu Zhan wrote: > Actually, I checked the assembled code, the compiler is _not_ > so smart to recognize this case. It just does optimization as > the hint unlikely() told it. What version, and why didn't your changelog include this useful information? -- 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>