Re: [PATCH v4 0/1] Use HMM for ODP v4

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On Wed, May 22, 2019 at 06:42:11PM -0400, Jerome Glisse wrote:

> > > The way race is avoided is because mm->hmm will either be NULL or
> > > point to another hmm struct before an existing hmm is free. 
> > 
> > There is no locking on mm->hmm so it is useless to prevent races.
> 
> There is locking on mm->hmm

Not in mm_get_hmm()

> > So we agree this patch is necessary? Can you test it an ack it please?
> 
> A slightly different patch than this one is necessary i will work on
> it tomorrow.

I think if you want something different you should give feedback on
this patch. You haven't rasied any defects with it.

Jason




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