[PATCH PULL F16 F17] task_work_add: generic process-context callbacks

[Josh Boyer]

On Tue, Jun 26, 2012 at 06:28:52PM +0200, Oleg Nesterov wrote:
> On 06/25, Anton Arapov wrote:
> >
> > --- a/include/linux/tracehook.h
> > +++ b/include/linux/tracehook.h
> > @@ -49,6 +49,7 @@
> >  #include <linux/sched.h>
> >  #include <linux/ptrace.h>
> >  #include <linux/security.h>
> > +#include <linux/task_work.h>
> >  struct linux_binprm;
> >
> >  /*
> > @@ -165,8 +166,10 @@ static inline void tracehook_signal_handler(int sig, siginfo_t *info,
> >   */
> >  static inline void set_notify_resume(struct task_struct *task)
> >  {
> > +#ifdef TIF_NOTIFY_RESUME
> >  	if (!test_and_set_tsk_thread_flag(task, TIF_NOTIFY_RESUME))
> >  		kick_process(task);
> > +#endif
> >  }
> 
> FYI, this change is not exactly correct...
> 
> The patch should also remove another "ifdef TIF_NOTIFY_RESUME" above,
> see the original patch: http://marc.info/?l=linux-kernel&m=133487746527839
> 
> This part was lost because the patch was routed via Al Viro's tree,
> and that ifdef was already killed by 1227dd77
> 
> However, I guess we do not care, fedora kernel doesn't run on
> !TIF_NOTIFY_RESUME machines.
> 
> So I think the patch is fine for F16/F17

Applied in Fedora git now.  Thanks to Anton for the backport and to you
for the ACK.

josh