On Fri, 30 Jul 2010, Minchan Kim wrote: > But Russell doesn't want it. > Please, look at the discussion. > > http://www.spinics.net/lists/arm-kernel/msg93026.html > > In fact, we didn't determine the approache at that time. > But I think we can't give up ARM's usecase although sparse model > dosn't be desinged to the such granularity. and I think this approach The sparse model goes down to page size memmap granularity. The problem that you may have is with aligning the maximum allocation unit of the page allocator with the section size of sparsemem. If you reduce your maximum allocation units then you can get more granularity. > can solve ARM's FLATMEM's pfn_valid problem which is doing binar search. OMG. -- 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>