On Mon, 5 Jan 2015, Joonsoo Kim wrote: > This patch implements compound_head_fast() which is similar with > compound_head() except tail flag race handling. And then, > virt_to_head_page() uses this optimized function to improve performance. Yeah that is how it was before and how it should be 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>