Specifically there are a bunch of things which need to be below a certain address (which one varies.) Tejun Heo <tj@xxxxxxxxxx> wrote: >Hello, Wanpeng. > >On Fri, Sep 06, 2013 at 04:58:11PM +0800, Wanpeng Li wrote: >> What's the root reason memblock alloc from high to low? To reduce >> fragmentation or ... > >Because low memory tends to be more precious, it's just easier to pack >everything towards the top so that we don't have to worry about which >zone to use for allocation and fallback logic. > >Thanks. -- Sent from my mobile phone. Please pardon brevity and lack of formatting. -- 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>