Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core)

Peter Zijlstra
2016-06-23T18:53:40Z

On Thu, Jun 23, 2016 at 10:52:58AM -0700, Linus Torvalds wrote:
> Ugh. Looking around at this, it turns out that a great example of this
> kind of legacy issue is the debug_mutex stuff.
>
> It uses "struct thread_info *" as the owner pointer, and there is _no_
> existing reason for it. In fact, in every single place it actually
> wants the task_struct, and it does task_thread_info(task) just to
> convert it to the thread-info, and then converts it back with
> "ti->task".
>
> So the attached patch seems to be the right thing to do regardless of
> this whole discussion.

Yeah, that looks fine. Want me to take it or will you just commit?