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Re: [mminit] [ INFO: possible recursive locking detected ]

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On Thu, Jul 16, 2015 at 08:13:38PM +0300, Konstantin Khlebnikov wrote:
> > @@ -1187,14 +1195,14 @@ void __init page_alloc_init_late(void)
> >  {pgdat_init_rwsempgdat_init_rwsempgdat_init_rwsem
> >         int nid;
> >
> > +       /* There will be num_node_state(N_MEMORY) threads */
> > +       atomic_set(&pgdat_init_n_undone, num_node_state(N_MEMORY));
> >         for_each_node_state(nid, N_MEMORY) {
> > -               down_read(&pgdat_init_rwsem);
> 
> Rw-sem have special "non-owner" mode for keeping lockdep away.
> This should be enough:
> 

I think in this case that the completions look nicer though so I think
I'll keep them.

-- 
Mel Gorman
SUSE Labs
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Re: [mminit] [ INFO: possible recursive locking detected ] Konstantin Khlebnikov <koct9i@gmail.com> - 2015-07-16 19:20 +0200
  Re: [mminit] [ INFO: possible recursive locking detected ] Peter Zijlstra <peterz@infradead.org> - 2015-07-16 19:40 +0200
  Re: [mminit] [ INFO: possible recursive locking detected ] Mel Gorman <mgorman@suse.de> - 2015-07-16 20:00 +0200
    Re: [mminit] [ INFO: possible recursive locking detected ] Konstantin Khlebnikov <koct9i@gmail.com> - 2015-07-17 07:10 +0200

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