On 3/15/07, Hugh Dickins <[EMAIL PROTECTED]> wrote:
I'm guessing that the pthread stacks are mmap'ed as greatest extents (probably because that's the easiest way to keep them apart), rather than as small MAP_GROWSDOWN areas to be expanded later on fault.
Please all, forget about MAP_GROWSDOWN. It's useless. If thread stacks are not completely mapped (address space allocation, memory allocation is not needed) it means subsequent unrelated mmaps can fall into the address space which is meant to be used for the stack, hence preventing the stack from growing. libpthread uses an mmap for the complete stack size all the time and this of course is accounted for in the kernel. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
