On Wed, Jan 4, 2017 at 6:19 AM, Kirill A. Shutemov <kirill@xxxxxxxxxxxxx> wrote: > On Tue, Jan 03, 2017 at 10:27:22AM -0800, Andy Lutomirski wrote: >> On Tue, Jan 3, 2017 at 8:04 AM, Kirill A. Shutemov <kirill@xxxxxxxxxxxxx> wrote: >> > And what about stack? I'm not sure that everybody would be happy with >> > stack in the middle of address space. >> >> I would, personally. I think that, for very large address spaces, we >> should allocate a large block of stack and get rid of the "stack grows >> down forever" legacy idea. Then we would never need to worry about >> the stack eventually hitting some other allocation. And 2^57 bytes is >> hilariously large for a default stack. > > The stack in the middle of address space can prevent creating other huuuge > contiguous mapping. Databases may want this. Fair enough. OTOH, 2^47 is nowhere near the middle if we were to put it near the top of the legacy address space. -- 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>