On Mon, 15 Feb 2016, Laura Abbott wrote: > When debug options are enabled, cmpxchg on the page is disabled. This is > because the page must be locked to ensure there are no false positives > when performing consistency checks. Some debug options such as poisoning > and red zoning only act on the object itself. There is no need to > protect other CPUs from modification on only the object. Allow cmpxchg > to happen with poisoning and red zoning are set on a slab. Acked-by: Christoph Lameter <cl@xxxxxxxxx> -- 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>