On 12/12/2012 01:30 PM, Andrew Morton wrote: >> >> I can rewrite the check to static_key if you want. Would it be better? > > The new test-n-branch only happens on the first read fault against a > thp huge page, yes? In which case it's a quite infrequent event and I > suspect this isn't worth bothering about. > Not to mention that flipping the static key is *incredibly* expensive. -hpa -- 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>