On Thu, Jun 23, 2016 at 04:31:26PM +0200, Oleg Nesterov wrote: > On 06/22, Linus Torvalds wrote: > > > > Oleg, what do you think? Would it be reasonable to free the stack and > > thread_info synchronously at exit time, clear the pointer (to catch > > any odd use), and only RCU-delay the task_struct itself? > > I didn't see the patches yet, quite possibly I misunderstood... But no, > I don't this we can do this (if we are not going to move ti->flags to > task_struct at least). Didn't we talk about using SLAB_DESTROY_BY_RCU for task_struct before? If that is possible, a reuse in per-cpu cache is equally possible. All we really want to guarantee is that the memory remains a task_struct, it need not remain the same task, right? -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
