On Tue, Apr 20, 2010 at 07:27:09AM +0900, Tejun Heo wrote: > Hello, Christoph. > > On 04/20/2010 02:38 AM, Christoph Lameter wrote: > > alloc_pages_exact_node results in more confusion because it does suggest > > that fallback to other nodes is not allowed. > > I can't see why alloc_pages_exact_node() exists at all. It's in the > mainline and if you look at the difference between alloc_pages_node() > and alloc_pages_exact_node(), it's almost silly. :-( > alloc_pages_exact_node() avoids a branch in a hot path that is checking for something the caller already knows. That's the reason it exists. -- Mel Gorman Part-time Phd Student Linux Technology Center University of Limerick IBM Dublin Software Lab -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>