linux-kernel - Re: [PATCH 6/8] IB/mlx5/hmm: add mlx5 HMM device initialization and callback v3.

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Date:	Tue, 21 Jul 2015 11:14:59 -0400 (EDT)
From:	Jerome Glisse <jglisse@...hat.com>
To:	Haggai Eran <haggaie@...lanox.com>
Cc:	linux-kernel@...r.kernel.org, linux-rdma@...r.kernel.org,
	Christophe Harle <charle@...dia.com>,
	Duncan Poole <dpoole@...dia.com>,
	Sherry Cheung <SCheung@...dia.com>,
	Subhash Gutti <sgutti@...dia.com>,
	John Hubbard <jhubbard@...dia.com>,
	Mark Hairgrove <mhairgrove@...dia.com>,
	Lucien Dunning <ldunning@...dia.com>,
	Cameron Buschardt <cabuschardt@...dia.com>,
	Arvind Gopalakrishnan <arvindg@...dia.com>,
	Shachar Raindel <raindel@...lanox.com>,
	Liran Liss <liranl@...lanox.com>
Subject: Re: [PATCH 6/8] IB/mlx5/hmm: add mlx5 HMM device initialization and
 callback v3.

> On 17/07/2015 22:01, Jérôme Glisse wrote:
> > @@ -151,10 +151,11 @@ int ib_umem_odp_get(struct ib_ucontext *context,
> > struct ib_umem *umem)
> >  		context->ib_mirror = ib_mirror_ref(ib_mirror);
> >  	}
> >  	mutex_unlock(&ib_device->hmm_mutex);
> > -	umem->odp_data.ib_mirror = ib_mirror;
> > +	umem->odp_data->ib_mirror = ib_mirror;
> >  
> >  	down_write(&ib_mirror->umem_rwsem);
> > -	rbt_ib_umem_insert(&umem->odp_data->interval_tree, &mirror->umem_tree);
> > +	rbt_ib_umem_insert(&umem->odp_data->interval_tree,
> > +			   &ib_mirror->umem_tree);
> >  	up_write(&ib_mirror->umem_rwsem);
> >  
> >  	mmput(mm);
> > @@ -163,7 +164,7 @@ int ib_umem_odp_get(struct ib_ucontext *context, struct
> > ib_umem *umem)
> >  
> >  void ib_umem_odp_release(struct ib_umem *umem)
> >  {
> > -	struct ib_mirror *ib_mirror = umem->odp_data;
> > +	struct ib_mirror *ib_mirror = umem->odp_data->ib_mirror;
> >  
> >  	/*
> >  	 * Ensure that no more pages are mapped in the umem.
> 
> It doesn't look like this code would have compiled before this patch,
> and as far as I can see the previous patch removed the #error line.
> Could you make sure all of the patches build correctly? You could use
> tools/testing/ktest for instance.
> 

This is a rebase error. But the #error is there for a purpose the HMM
would not work mid way so if anyone if bisecting up through that i would
rather error out at compilation.

Jérôme
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